The calculator shows the result that Enrique got after evaluating the expression 56 + 7 × (34 – 17) – 16 . He checked his work by rounding all of the values to the nearest ten and comparing it to the calculator result. Which is true regarding his estimate and the accuracy of his calculator result?

The estimated result is 140, which suggests the calculator is correct.
The estimated result is 240, which suggests the calculator is incorrect.
The estimated result is 320, which suggests the calculator is incorrect.
The estimated result is 680, which suggests the calculator is incorrect.

Answers

Answer 1

Answer:

The estimated result is 680, which suggests the calculator is incorrect.

Answer 2

Final answer:

The estimated result when rounding to the nearest ten is 130, while the exact calculator result is 159. Therefore, the given options for estimation are all incorrect. The calculator is accurate, but the estimate is lower.

Explanation:

The calculator results for the expression 56 + 7 * (34 - 17) u2013 16 can be checked by estimation. To estimate, we round the numbers to the nearest ten and perform the operations. Here are the steps for estimation:

Round 56 to the nearest ten: 60

Round 34 to the nearest ten: 30

Round 17 to the nearest ten: 20

Perform the rounded operation: 60 + 7 * (30 - 20) u2013 10

The simplified expression would be 60 + 7 * 10 u2013 10

This simplifies further to 60 + 70 u2013 10, which is 130

The exact calculator result would be:

Calculate the parentheses first: 34 - 17 = 17

Multiply by 7: 7 * 17 = 119

Add 56: 56 + 119 = 175

Subtract 16: 175 u2013 16 = 159

The estimated result is 130, and the accurate calculator result is 159. Therefore, none of the options provided are correct as the estimate should be 130, suggesting that while the calculator is accurate, the given estimate options are incorrect.


Related Questions

What number has to be added to each term of 2:5 to make the ratio 4:5?

Answers

Using [tex]a/b+c/b=(a+c)/b[/tex], we find that [tex]2/5+2/5=4/5[/tex].

Hope this helps.

As a laboratory assistant, you measure chemicals using the metric system. For your current research, you need to measure out 45 grams of sodium chloride. The bottle you are using lists the amount in ounces. About how many ounces of sodium chloride will you need?

Answers

Answer:

There is 1.587 ounces of sodium chloride that he will need.

Since we have given that

Quantity of sodium chloride in grams = 45 grams

We need to find the number of ounces of sodium chloride.

As we know that

1 ounce = 28.35 gram

So, 1 gram =

So, 45 grams =

Hence, there is 1.587 ounces of sodium chloride that he will need.

Step-by-step explanation: Since we have given that

Quantity of sodium chloride in grams = 45 grams

We need to find the number of ounces of sodium chloride.

As we know that

1 ounce = 28.35 gram

So, 1 gram =

So, 45 grams =

Hence, there is 1.587 ounces of sodium chloride that he will need.

What are the domain and range of the function f(x) = -3(x-5)2 +4?

domain: (-0,5)

range: -00,00)

domain: (-0,4]

range: -00,00)

domain: (-0,5]

range: (-0,4]

domain: -00,00

range: (-0,4]

Answers

Good evening ,

Answer:

domain: ]−∞,+∞[

range: ]−∞,4]

Step-by-step explanation:

Look at the photo below for more info.

:)

Final answer:

The domain of the function f(x) = -3(x-5)² +4 is all real numbers, written as (-∞, ∞). The range, or possible values of f(x), is (-∞, 4] since the parabola opens downwards and the maximum value is 4.

Explanation:

The function f(x) = -3(x-5)² +4 is a parabola that opens downwards. The domain of a function is the set of all values that x can take. For any parabolic function, the domain is always all real numbers, which we could write as (-∞, ∞).

The range of a function refers to the possible values of f(x). In this case, since the parabola opens downwards, the maximum value of f(x) is at the vertex of the function. This parabola's vertex is at (5,4), so its maximum, and thus the upper boundary of the range, is 4. The parabola continues downwards to negative infinity, so the range is (-∞, 4].

Therefore, the domain is (-∞, ∞), and the range is (-∞, 4].

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Write the explicit formula for the arithmetic sequence.

3, -3, -9, -15, -21, ...
A) an = 7 - 4n
B) an = 6 - 3n
C) an = 9 - 6n
D) an = 18 - 15n

Answers

Option C

The explicit formula for the arithmetic sequence is [tex]a_n = 9 - 6n[/tex]

Solution:

Given that the arithmetic sequence is:

3, -3, -9, -15, -21, ...

To find: Explicit formula for the arithmetic sequence

The nth term of an arithmetic sequence is given by:

[tex]a_n = a_1 + (n - 1)d[/tex]

Where [tex]a_n[/tex] is nth term of sequence

n is the term's location

[tex]a_1[/tex] is the first term of sequence

d is the common difference between terms

In an arithmetic sequence, the difference between successive terms is constant. This means that we can move from any term to the next one by adding a constant value.

In the given sequence:

3, -3, -9, -15, -21, ...

[tex]a_1 = \text{ first term } = 3[/tex]

d = difference between any two terms in sequence

[tex]d = a_2 - a_1[/tex]

d = -3 - (3) = -6

Substituting the values in above formula,

[tex]a_n = 3 + (n - 1)(-6)\\\\a_n = 3 -6n + 6\\\\a_n = 9 - 6n[/tex]

Thus the explicit formula to find any term in sequence is found

This table gives a few (x,y) pairs of a line in the coordinate plane.(34, -52), (51,-65), (68, -78).What is the y-intercept of the line?

Answers

Answer:

(0,-26)

Step-by-step explanation:

Write the equation of the line in the slope-intercept form:

1. The slope of the line is

[tex]\dfrac{-65-(-52)}{51-34}=-\dfrac{13}{17}[/tex]

2. The equation of the line is

[tex]y-(-52)=-\dfrac{13}{17}(x-34)\\ \\y+52=-\dfrac{13}{17}x+26\\ \\y=-\dfrac{13}{17}x-26[/tex]

Now, find the y-intercept, substitute x = 0:

[tex]y=-\dfrac{13}{17}\cdot 0-26\\ \\y=-26[/tex]

Caroline has 5 times as many paper clips as Trevon. After Trevon buys another 500 paper clips, he has 268 paper clips fewer than Caroline. How many paper clips does Trevon have now?

Answers

Trevon have 692 paper clips after buying 500 more clips.

Step-by-step explanation:

Let,

Paper clips Caroline have = x

Paper clips Trevon have = y

According to given statement;

x = 5y   Eqn 1

After Trevon buys another 500 paper clips, he has 268 paper clips fewer than Caroline.

y + 500 = x - 268

y + 500 +268 = x

y + 768 = x     Eqn 2

Putting value of x from Eqn 2 in Eqn 1

[tex]y+768 = 5y\\768=5y-y\\768 = 4y\\4y=768[/tex]

Dividing both sides by 4

[tex]\frac{4y}{4}=\frac{768}{4}\\y=192[/tex]

Number of paper clips Trevon has now = y+500 = 192+500 = 692

Trevon have 692 paper clips after buying 500 more clips.

Keywords: linear equation, substitution method

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Final answer:

To find out how many paper clips Trevon has now, we set up an algebraic equation and solve it to determine that Trevon originally had 192 paper clips. After buying an additional 500, he now has a total of 692 paper clips.

Explanation:

The student's question involves solving a basic algebra word problem where Caroline has 5 times as many paper clips as Trevon. When Trevon buys another 500 paper clips, he has 268 paper clips fewer than Caroline. To solve this, we can set up the equation to find the original number of paper clips Trevon had:

Let T represent the number of paper clips Trevon originally had.Caroline has 5 times as many paper clips, so she has 5T.After Trevon buys 500 more, he has T + 500.At this point, Trevon has 268 fewer paper clips than Caroline, so 5T = T + 500 + 268.Solving this equation: 5T = T + 768.4T = 768T = 192

So, Trevon originally had 192 paper clips. After buying another 500, Trevon now has 192 + 500 = 692 paper clips.

A rhombus, COAL is centered at the origin. The longer diagonal is on the y-axis and has a

length of 27m. The shorter diagonal is on the x-axis and has a length of has diagonals with

length 19m. Determine the coordinates of the vertices.

Answers

Answer with Step-by-step explanation:

We are given  that

COAL is a rhombus .

CA and LO are the diagonals of rhombus COAL.

CA=27 m

OL=19 m

We know that

Diagonals of rhombus are bisect to each other.

Let P(0,0) be the intersecting point of diagonals

Therefore, CP=PA

LP=PO

Length PO=[tex]\frac{1}{2}LO=\frac{19}{2}=9.5 m[/tex]

Length of CP=[tex]\frac{1}{2}PA=\farc{1}{2}(27)=13.5 m[/tex]

Let C([tex]0,y_2),O(x_1,0),A(0,y_1) \;and\;L(x_2,0)[/tex].

Distance formula:[tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Using the formula

[tex]CP=\sqrt{(0-0)^2+(0-y_2)^2}=13.5[/tex]

[tex]\sqrt{y^2_2}=13.5[/tex]

[tex]y_2=\pm 13.5[/tex]

C(0,13.5) or (0,-13.5)

[tex]\sqrt{(y_2-y_1)^2}=27[/tex]

Substitute the value [tex]y_2=13.5[/tex]

[tex]\sqrt{13.5-y_1}=27[/tex]

[tex]13.5-y_1=\pm 27[/tex]

[tex]y_1=13.5-27=-13.5[/tex]

A(0,-13.5)

[tex]13.5-y_1=-27[/tex]

[tex]y_1=13.5+27=40.5[/tex]

A(0,40.5)

Substitute [tex]y_2=-13.5[/tex]

[tex]\sqrt{(-13.5-y_1)^2}=27[/tex]

[tex]-13.5-y_1=\pm 27[/tex]

[tex]-13.5-y_1=27[/tex]

[tex]y_1=-13.5-27=-40.5[/tex]

A(0,-40.5)

[tex]-13.5-y_1=-27[/tex]

[tex]y_1=-13.5+27=13.5[/tex]

A(0,13.5)

[tex]LP=\sqrt{(x_2-0)^2}=9.5[/tex]

[tex]\sqrt{x^2_2}=9.5[/tex]

[tex]x_2=\pm 9.5[/tex]

L(9.5,0) or L(-9.5,0)

[tex]\sqrt{x_2-x_1)^2}=19[/tex]

[tex](9.5-x_1)^2}=19[/tex]

[tex]9.5-x_1=\pm 19[/tex]

[tex]9.5-x_1=19[/tex]

[tex]x_1=9.5-19=-9.5[/tex]

[tex]9.5-x_1=-19[/tex]

[tex]x_1=9.5+19=28.5[/tex]

[tex](-9.5-x_1)=19[/tex]

[tex]-9.5-x_1=\pm 19[/tex]

[tex]-9.5-x_1=19[/tex]

[tex]x_1=-9.5-19=-28.5[/tex]

[tex]-9.5-x_1=-19[/tex]

[tex]-9.5+19=x_1[/tex]

[tex]x_1=9.5[/tex]

O(-9.5,0) or O(28.5,0) or (-28.5,0) or (9.5,0)

A cooler contains fifteen bottles of sports drink: eight lemon-lime flavored and seven orange flavored

Answers

Answer:

Mutually exclusive,

[tex]P(\text{Lemon-lime or orange})=\frac{2}{3}[/tex]

Step-by-step explanation:

Please consider the complete question:

Determine if the scenario involves mutually exclusive or overlapping events. Then find the  probability.

A cooler contains twelve bottles of sports  drink: four lemon-lime flavored, four  orange flavored, and four fruit-punch  flavored. You randomly grab a bottle. It  is a lemon-lime or an orange.

Let us find probability of finding one lemon lime drink.

[tex]P(\text{Lemon-lime})=\frac{\text{Number of lemon lime drinks}}{\text{Total drinks}}[/tex]

[tex]P(\text{Lemon-lime})=\frac{4}{12}[/tex]

[tex]P(\text{Lemon-lime})=\frac{1}{3}[/tex]

Let us find probability of finding one orange drink.

[tex]P(\text{Orange})=\frac{\text{Number of orange drinks}}{\text{Total drinks}}[/tex]

[tex]P(\text{Orange})=\frac{4}{12}[/tex]

[tex]P(\text{Orange})=\frac{1}{3}[/tex]

Since probability of choosing a lemon lime doesn't effect probability of choosing orange drink, therefore, both events are mutually exclusive.

We know that probability of two mutually exclusive events is equal to the sum of both probabilities.

[tex]P(\text{Lemon-lime or orange})=P(\text{Lemon-lime})+P(\text{Orange})[/tex]

[tex]P(\text{Lemon-lime or orange})=\frac{1}{3}+\frac{1}{3}[/tex]

[tex]P(\text{Lemon-lime or orange})=\frac{1+1}{3}[/tex]

[tex]P(\text{Lemon-lime or orange})=\frac{2}{3}[/tex]

Therefore, the probability of choosing a lemon lime or orange is [tex]\frac{2}{3}[/tex].

Please help!
Car A travels 120 miles in the same time that car B travels 150 miles. If car B averages 10 mph faster than car A, what is the speed of each car?

Answers

Answer:

  Car A: 40 mph

  Car B: 50 mph

Step-by-step explanation:

For the same travel time, the ratio of speeds is the same as the ratio of distances:

  (speed B)/(speed A) = 150/120 = 5/4

The difference in the (reduced) ratio units is 1, so 1 ratio unit corresponds to 10 mph. Multiplying the reduced ratio by 10 mph, we get ...

Speed B is 50 mph; speed A is 40 mph.

(-3, y) and (1, -7); m = -4

Answers

Step-by-step explanation:

If you're asking for an equation, the equation would be: [tex]y=-4x-3[/tex]

(probably what you're looking for) if you're looking for what y equals, the answer is: 9

for equation:

1. write an equation with the information you have

[tex]y=-4x+b[/tex]

2. Plug in the values for x and y

[tex]-7=-4(1)+b[/tex] where b equals -3

so your equation would be [tex]y=-4x-3[/tex]

for what y equals:

1. since you've figured out the equation, plug in the value for x and solve for y

[tex]y=-4(-3)-3[/tex] which then gives you [tex]y=9[/tex]

1/3(y - 2) -5/6 (y + 1) =3/4 (y - 3) - 2

Answers

Answer:

[tex]y=\frac{11}{5}[/tex]

Step-by-step explanation:

Given expression

[tex]\frac{1}{3}(y-2)-\frac{5}{6}(y+1)=\frac{3}{4}(y-3)-2[/tex]

To solve for [tex]y[/tex] for the given expression.

Solution:

We multiply each term with the least common multiple of the denominators of the fraction in order to remove fractions.

The multiples of the denominators are:

3 = 3,6,9,12,15

6 = 6,12

4 = 4,8,12

The least common multiple = 12.

Multiplying each term with 12.

[tex]12.\frac{1}{3}(y-2)-12.\frac{5}{6}(y+1)=12.\frac{3}{4}(y-3)-2(12)[/tex]

[tex]4(y-2)-10(y+1)=9(y-3)-24[/tex]

Using distribution.

[tex]4y-8-10y-10=9y-27-24[/tex]

Simplifying.

[tex]-6y-18=9y-51[/tex]

Adding [tex]6y[/tex] both sides.

[tex]-6y+6y-18=9y+6y-51[/tex]

[tex]-18=15y-51[/tex]

Adding 51 both sides.

[tex]-18+51=15y-51+51[/tex]

[tex]33=15y[/tex]

Dividing both sides by 15.

[tex]\frac{33}{15}=\frac{15y}{15}[/tex]

[tex]\frac{33}{15}=y[/tex]

Simplifying fractions.

[tex]\frac{11}{5}=y[/tex]

∴ [tex]y=\frac{11}{5}[/tex]  (Answer)

HELP ASAP will give brainliest

A farmer is tracking the amount of wheat his land is yielding each year. He finds that the function f(x) = −x2 + 20x + 75 models the crops in pounds per acre over x years. Find and interpret the average rate of change from year 5 to year 15.


The crop yield increased by 150 pounds per acre from year 5 to year 15.

The crop yield decreased by 15 pounds per acre from year 5 to year 15.

The crop yield decreased by 5 pounds per acre from year 5 to year 15.

The crop yield did not change from year 5 to year 15.

Answers

Average rate of change is 0

Interpretation: The crop yield did not change from year 5 to year 15

Solution:

The function that models the yield is:

[tex]f(x) = -x^2 + 20x + 75[/tex]

The average rate of change of f(x) from x = a to x = b is given by the formula:

[tex]\text{ average rate of change }=\frac{f(b)-f(a)}{b-a}[/tex]

Find and interpret the average rate of change from year 5 to year 15

[tex]f(5) = -(5)^2 + 20(5) + 75\\\\f(5) = -25 + 100 + 75\\\\f(5) = 150[/tex]

[tex]f(15) = - (15)^2 + 20(15) + 75\\\\f(15) = -225 + 300 + 75\\\\f(15) = 150[/tex]

Thus average rate of change:

[tex]\text {average rate of change}=\frac{f(15)-f(5)}{15-5}[/tex]

[tex]\text {average rate of change}=\frac{150-150}{10}=0[/tex]

Thus Average rate of change is 0

Interpretation: The crop yield did not change from year 5 to year 15.

Final answer:

The average rate of change in wheat yield from year 5 to year 15 is 0 pounds per acre per year, symbolizing that there was no change in the crop yield between these years.

Explanation:

To find the average rate of change of the wheat yield from year 5 to year 15, we will apply the function f(x) = −x² + 20x + 75 to these years and then calculate the rate of change. First, we'll find the yield for year 5 and year 15:

For year 5: f(5) = −(5)² + 20(5) + 75 = − 25 + 100 + 75 = 150For year 15: f(15) = −(15)² + 20(15) + 75 = − 225 + 300 + 75 = 150

Next, we'll calculate the average rate of change using these yields:

Average rate of change = (f(15) - f(5)) / (15 - 5) = (150 - 150) / (10) = 0

Therefore, the crop yield did not change from year 5 to year 15. The function indicates that at both year 5 and year 15, the farmer's land yielded 150 pounds per acre, so the average rate of change in yield over this period is 0 pounds per acre per year.

How to solve this?:

2x+2y=9
2x-y=3

Answers

Answer:

(2.5, 2 )

Step-by-step explanation:

Given the 2 equations

2x + 2y = 9 → (1)

2x - y = 3 → (2)

Rearrange (2) expressing y in terms of x

y = 2x - 3 → (3)

Substitute y = 2x - 3 into (1)

2x + 2(2x - 3) = 9 ← distribute left side and simplify

2x + 4x - 6 = 9

6x - 6 = 9 ( add 6 to both sides )

6x = 15 ( divide both sides by 6 )

x = 2.5

Substitute x = 2.5 into (3) for corresponding value of y

y = 2(2.5) - 3 = 5 - 3 = 2

Solution is (2.5, 2 )

Solve this using the elimination process.

They're already lined up so just solve!

2x + 2x = 4x

2y+ (-y) = 3y

9 + 3 = 12

4x + (-1y) = 12

Now solve.

4x + -1 x y = 12

4x - y = 12

4x = 12 + y

x = 12 + y / 4

First, when a problem is lined up with the same vales/terms, you can use the elimination process while doing math.

Then, make your equation by adding and subtracting the same terms.

Therefore, you finally get your answer.

Keep in mind not all answers will be a full number.

Given f(x) and g(x) = f(k:x), use the graph to determine the value of k.

Answers

Answer:

k=2

Step-by-step explanation:

We are given that two function f(x) and g(x)

[tex]g(x)=f(kx)[/tex]

From given graph

[tex]g(-2)=0[/tex]

[tex]f(-4)=0[/tex]

[tex]g(-2)=f(-4)[/tex]

By comparing we get

x=-2 and

[tex]kx=-4[/tex]

[tex]k(-2)=-4[/tex]

[tex]k=\frac{-4}{-2}=2[/tex]

Hence, the value of k=2

Based on information provided, the value of k is 2.

Here's why:

1. Understanding the problem: We are given two functions, f(x) and g(x), where g(x) is defined as f(k * x). The graph shows both functions, and we are asked to find the value of k.

2. Analyzing the graph: The graph shows two lines:

  - The red line represents f(x).

  - The blue line represents g(x).

3. Key observation: We are given that g(-2) = 0. This means the blue line intersects the x-axis at x = -2.

4. Relating g(x) to f(x): Since g(x) = f(k * x), we know that the blue line is obtained by horizontally stretching or compressing the red line by a factor of k.

5. Finding k: To make the blue line intersect the x-axis at x = -2, we need to stretch the red line to the left by a factor of 2. This means k = 2.

Therefore, based on the given information and the analysis of the graph, the value of k is 2.

Write a ratio that is equivalent to 13:2, other than 13:2 itself

Answers

26:4

Hope this helps!

Final answer:

An equivalent ratio to 13:2 can be found by multiplying or dividing both terms of the ratio by the same number. For instance, when both terms are multiplied by 2, the equivalent ratio is 26:4 because the proportion remains unchanged.

Explanation:

To find a ratio equivalent to 13:2, you need to multiply or divide both terms of the ratio by the same number. For example, if you multiply both terms of the ratio 13:2 by 2, you would get 26:4 which is an equivalent ratio. This is because the relationship or proportion between the two terms remains the same.

Here's the step-by-step calculation:

Multiply the first term of the ratio (13) by 2. That gives you 26.Multiply the second term of the ratio (2) by 2. That gives you 4.

So, the ratio that is equivalent to 13:2 is 26:4.

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How do you solve the following for x?

Answers

Answer:

Step-by-step explanation:

Is called a letter that stands for the number

Answer:

Step-by-step explanation:

√10x - 1 = 7

Square both sides,

10x - 1 = 7²

10x - 1 =  49

10x = 49 + 1

10x = 50

x = 50/10

x=5

a coach bought some baseball bats and 5 baseball gloves. Let b represent the number of bats. Write an expression that can be used to find the total cost of bats and gloves. Then find the total cost if he bought three bats.

Answers

Final answer:

The expression for the total cost of bats and gloves is b*x + 5*y. To find the total cost when three bats are bought, you need to know the costs of a bat (x) and a glove (y), and substitute those into the expression.

Explanation:

Assume that the cost of a baseball bat is 'x' dollars and each glove costs 'y' dollars. The total cost can be calculated by making 'b' the number of bats and adding the cost of 5 gloves. Therefore, the expression representing the total cost is b*x + 5*y.

Now, if the coach bought 3 bats, and we're given the costs for a bat and a glove, we can substitute '3' for 'b', 'x' for the cost of a bat, and 'y' for the cost of a glove.

For example, if a bat is $50 (x=50) and a glove is $20 (y=20), the total cost would be: 3*50 + 5*20 = 250 dollars.

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Final answer:

The expression for total cost of baseball bats and gloves is 'b times the number of bats plus 5 times the cost of a glove', where 'b' represents the cost of a bat. In the bat and ball problem, if a bat costs $1 more than the ball and together they cost $1.10, the ball costs $0.05. For three bats, the total cost is $3.15.

Explanation:

The question posed is a classic algebra problem from mathematics often used to illustrate a common cognitive error. To write an expression for the total cost of the baseball bats and gloves, let the cost of each bat be represented by 'b' and assume each glove has a fixed cost 'g'. The expression is then b times the number of bats plus 5 times the cost of a glove. However, we require additional information regarding the cost of individual gloves to complete this expression.

Turning to the bat and ball problem, if a bat and ball together cost $1.10, and the bat costs $1 more than the ball, we can set up the following equations where 'x' is the cost of the ball:

x + (x + $1) = $1.10

2x + $1 = $1.10

2x = $1.10 - $1.00

2x = $0.10

x = $0.05

Thus, the ball costs $0.05 and the bat costs $1.05. Finding the cost of three bats, we simply multiply $1.05 by 3 to get $3.15.

please help me please ​

Answers

None of them because they are not in order

Please need help!!! Need in 10 monutes

Answers

Answer:

Step-by-step explanation:

16) 4 * y/5

The value of y should be greater than 5

For example if y = 6, then 4* 6/5 = 24/5 = 4.8

If y= 10, then 4* 10/5 = 4 * 2 = 8

y > 5

17) 1 pound = 16 ounce

3020 pounds =3020 * 16 = 48320 ounces

when 6 is subtracted from the square of a number, the result is 5 times the number. Find the negative solution.

Answers

When 6 is subtracted from the square of a number, the result is 5 times the number, then the negative solution is -1

Solution:

Given that when 6 is subtracted from the square of a number, the result is 5 times the number

To find: negative solution

Let "a" be the unknown number

Let us analyse the given sentence

square of a number = [tex]a^2[/tex]

6 is subtracted from the square of a number = [tex]a^2 - 6[/tex]

5 times the number = [tex]5 \times a[/tex]

So we can frame a equation as:

6 is subtracted from the square of a number = 5 times the number

[tex]a^2 - 6 = 5 \times a\\\\a^2 -6 -5a = 0\\\\a^2 -5a -6 = 0[/tex]

Let us solve the above quadratic equation

For a quadratic equation [tex]ax^2 + bx + c = 0[/tex] where [tex]a \neq 0[/tex]

[tex]x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}[/tex]

Here in this problem,

[tex]a^2-5 a-6=0 \text { we have } a=1 \text { and } b=-5 \text { and } c=-6[/tex]

Substituting the values in above quadratic formula, we get

[tex]\begin{array}{l}{a=\frac{-(-5) \pm \sqrt{(-5)^{2}-4(1)(-6)}}{2 \times 1}} \\\\ {a=\frac{5 \pm \sqrt{25+16}}{2}=\frac{5 \pm \sqrt{49}}{2}} \\\\ {a=\frac{5 \pm 7}{2}}\end{array}[/tex]

We have two solutions for "a"

[tex]\begin{array}{l}{a=\frac{5+7}{2} \text { and } a=\frac{5-7}{2}} \\\\ {a=\frac{12}{2} \text { and } a=\frac{-2}{2}}\end{array}[/tex]

a = 6 or a = -1

We have asked negative solution. So a = -1

Thus the negative solution is -1

Sum1 help me in any of these

Answers

This seems confusing, like part of the question was cut off, but I'll try my best!

Answer: (For Part A)

I'm gonna assume that the $25.30 is the sum of all food and beverages.

So, if that's the case, the bill should be $27.32

Step-by-step explanation:

The meals tax is 8%, so all you have to do is multiply 25.30 (or 25.3) with 0.08 (8%) to get 2.024. Then you add 2.024 to the original number;

25.30 + 2.024 = 27.324

Finally you round to the nearest cent. So you get $27.32

However this might be incorrect because it looks like a  part of the question is missing.

1. Dan Elliott uses online banking. He pays the basic monthly

charge, 9 bills, and requests a printed statement. He also has

ATM transactions that include 2 out-of-network transactions

and a cash advance of $200.00. What are his total fees for

the month?

Pidni

Answers

Final answer:

The items are classified as M1, M2, or neither based on their liquidity and spendability. A line of credit and traveler's checks are neither M1 nor M2 as they are not actual money. Physical currency and money in a checking account are classified as M1, while money in a money market account is classified as M2.

Explanation:

M1 refers to the narrowest definition of the money supply, which includes only the most liquid forms of money that can be easily spent. M2 is a broader measure of the money supply and includes M1 as well as other less liquid forms of money. Neither refers to items that do not fit into either M1 or M2.

a. Your $5,000 line of credit on your Bank of America card is neither in M1 nor M2 as it is not actual money but a credit limit.

b. $50 dollars' worth of traveler's checks you have not used yet is neither in M1 nor M2 as they need to be exchanged for cash before they can be spent.

c. $1 in quarters in your pocket is in M1 as it is physical currency that can be spent.

d. $1200 in your checking account is in M1 as it is a liquid form of money that can be spent.

e. $2000 you have in a money market account is in M2 as it is a less liquid form of money that can be accessed but may have restrictions or penalties for withdrawal.

What is 5 3/7 - 2 1/5?

Answers

Answer:

3 8/35 is the answer your welcome

true or false...a triangle with sides of lengths 20,21 and 29 is a right triangle​

Answers

Answer:

True

Step-by-step explanation:

Answer:

true

Step-by-step explanation:

20 squared+21 sqaured= 29 squared

Please help me really quick pleasee
answer choices:
a)2
b)11
c)20
d)29

Answers

Answer:

C. [tex]x=20^{\circ}[/tex]

Step-by-step explanation:

Angle 6 and angle with measure 45° are vertical angles (opposite angles whan two lines intersect). By Vertical Angles Theorem, vertical angles are congruent, so

[tex]m\angle 6=45^{\circ}[/tex]

Angle 6 and angle with measure [tex]5x+35^{\circ}[/tex] are the same side interior angles when two parallel lines are cut by transversal. The same side interior angles add up to 180°, then

[tex]m\angle 6+5x+35^{\circ}=180^{\circ}\\ \\45^{\circ}+5x+35^{\circ}=180^{\circ}\\ \\5x=180^{\circ}-45^{\circ}-35^{\circ}\\ \\5x=100^{\circ}\\ \\x=20^{\circ}[/tex]  

3.8 divided by 2 estimated

Answers

Answer:

Approx. 2

Step-by-step explanation:

round 3.8 to the nearest whole number, which is 4.

Divide 4 by 2.

3.8/2 is approx. 2.

(the exact answer would be 1.9)

Final answer:

To estimate the result of 3.8 divided by 2, you can round 3.8 to 4 which, when divided by 2, gives an estimate of 2. This method provides a result that is close to the actual answer of 1.9.

Explanation:

The question '3.8 divided by 2 estimated' is asking for an approximate result of dividing 3.8 by 2. To estimate this, you can round 3.8 to 4 because it is close to this even number which makes mental math easier. Now, divide 4 by 2 to get 2. Although this is an estimate, the actual calculation of 3.8 / 2 yields 1.9. So, our estimated answer is close to the actual result.

When performing division, estimation can be a useful tool, especially when dealing with decimals. Estimating can also help in checking the reasonableness of answers obtained via calculators, which can sometimes provide more precision than necessary. For example, when using significant figures in calculations, a calculator does not limit the precision of the result, but estimating can help a user decide how many decimal places to report.

Learn more about Estimation here:

https://brainly.com/question/14992908

#SPJ2

alicia takes 4 white 2 red and 3 lue shirts on the trip. on the first day alicia will pick a shirt at random. what is the probability that she picks a red shirt?

Answers

Answer:

The Probability of Alicia picking a red shirt is [tex]\frac{2}{9}[/tex].

Step-by-step explanation:

Given,

Number of White shirts = 4

Number of Red shirts = 2

Number of Blue shirts = 3

Solution,

Total number of shirts = Number of White shirts + Number of Red shirts + Number of Blue shirts = [tex]4+2+3=9[/tex]

[tex]P(E)=\frac{Total\ number\ of\ possible\ outcomes}{Total\ number\ of\ outcomes}[/tex]

Therefore,

[tex]P(of\ red\ shirts)=\frac{2}{9}[/tex]

Hence The Probability of Alicia picking a red shirt is [tex]\frac{2}{9}[/tex].

What is an equation of a line that passes through the points (8 , -3) (8 , 4)

Answers

Answer:

[tex]\displaystyle x = 8[/tex]

Step-by-step explanation:

Anything set to equal x is considered an undefined rate of change [slope], which is a vertical line. This is not a function, since it flunks the vertical line test.

I am joyous to assist you anytime.

Micheal is 4 times as old as Brandon and is also 27 years older than Brandon. How old is Brandon?

Answers

Answer: 108

Step-by-step explanation:

1. What is the period of the sinusoidal function? Please help thank you

Answers

The period will be the length for one cycle of the function.

answer: 10

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