Answer:
The correct answer is D.
Step-by-step explanation:
p + 7 = ≤ 50
because I did it for the ECA 3 Exam. :>
The inequality which helps to find the possible values for x will be x + 7 ≤ 50.
What is inequality?A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.
In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.
As per the given,
Total budget = $50
Ticket cost = $7
Total spent ≤ total budget
x + 7 ≤ 50
x ≤ 43
Hence "The inequality which helps to find the possible values for x will be x + 7 ≤ 50".
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Which of the following equations represents a degenerate ellipse?
Answer: [tex]\frac{x^2}{10} = -\frac{y^2}{18}[/tex]
Step-by-step explanation:
Since, The degenerate form of an ellipse is always a point.
Thus, the equation that shows only a point will be our answer.
Since [tex]9x^2 + 4y^2 = 1[/tex] is the equation of an ellipse,
Thus, It can not be a point.
[tex]\frac{x^2}{14} + \frac{y^2}{19} =2[/tex] is not a point ( because it is an equation of ellipse)
But, when we plot [tex]\frac{x^2}{10} = -\frac{y^2}{18}[/tex]
We get only a point (0,0).
Thus, equation, [tex]\frac{x^2}{10} = -\frac{y^2}{18}[/tex] shows only one point.
Therefore, it is a generated form of ellipse.
The equation representing a degenerate ellipse would have the sum of the distances from the foci to any point on the curve as a constant.
Explanation:An ellipse is a closed curve such that the sum of the distances from a point on the curve to the two foci is constant. So, the equation representing a degenerate ellipse would have the sum of the distances from the foci to any point on the curve as a constant. The correct equation is (b).
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Total blood cholesterol level was measured for each of
8 adults. Here are the 8
measurements (in mg/dL):
264, 191, 160, 148, 262, 212, 268, 246
Step-by-step explanation:
Given blood cholesterol level was measured for each of 8 adults (in mg/dL) are:
264, 191, 160, 148, 262, 212, 268, 246
In order to find the mean, we need to add all those 8 numbers and divide by 8.
Therefore, mean = [tex]\frac{264+191+160+148+262+212+268+246}{8} =\frac{1751}{8} =218.9.[/tex]
Mean = 218.9.In order to find the median, we need to arrange them in ascending order:
148, 160, 191, 212, 246, 262, 264, 268.
The middle most two values are 212 and 246.
Therefore, median = [tex]\frac{212+246}{2} =\frac{458}{2} = 229.[/tex]
Median = 229.[tex]\mathrm{The\:mode\:is\:the\:term\:in\:the\:data\:set\:that\:appears\:the\:most.}[/tex]
[tex]\mathrm{If\:there\:is\:more\:than\:one\:term\:that\:appears\:the\:most,\:then\:there\:is\:no\:mode.}[/tex]
[tex]\mathrm{Count\:the\:number\:of\:times\:each\:element\:appears\:in\:the\:list}[/tex]
[tex]\begin{pmatrix}148&160&191&212&246&262&264&268\\ 1&1&1&1&1&1&1&1\end{pmatrix}[/tex]
[tex]\mathrm{The\:most\:common\:element\:is\:not\:unique,\:so\:there\:is\:no\:mode}[/tex]
Therefore, Mode = Zero mode.is -13/1 rational or irrational number
Answer:
Rational
Step-by-step explanation:
A rational number is a number that can be written as a fraction, (or is any real number, positive or negative) Irrational numbers, for example, are numbers that are decimals, but dont terminate or repeat. Such as [tex]\pi[/tex] and [tex] the square root of 2, 3 and 5. may i have brainliest?
One grain of sand approximately weighs 7 * 10^{-5} g. How many grains of sand are there in 6300 kg of sand? Give your answer in standard form.
Answer:
Proportion states that the two ratio or fractions are equal.
Given the statement: One grain of sand approximately weighs 7 * 10^{-5} g.
To find how many grains of sand are there in 6300 kg of sand.
Let x be the number of grains of sand in 6300 kg of sand.
Using conversion :
1 kg = 1000 g
6300 kg = 6300000 g
Then, by using proportion method, we have;
[tex]\frac{1}{7\times 10^{-5}}= \frac{x}{6300000}[/tex]
[tex]\frac{10^5}{7} = \frac{x}{6300000}[/tex]
By cross multiply we get;
[tex]6300000 \times 10^5 = 7x[/tex]
or
[tex]63 \times 10^5 \times 10^5 = 7x[/tex]
[tex]63 \times 10^{5+5} = 7x[/tex] [using [tex]x^a \cdot x^b = x^{a+b}[/tex]]
[tex]63 \times 10^{10} = 7x[/tex]
Divide both sides by 7 we get;
[tex]x = \frac{63 \times 10^{10}}{7} = 9 \times 10^{10}[/tex]
Standard form is a way of of writing down very large or very small numbers easily.
Therefore, [tex]9 \times 10^{10}[/tex] grains of sand are there in 6300 kg of sand.
how do you solve this?
Answer: To solve these types of questions what I always do is get a protractor if you have one and put it up against to where the dot is in the middle of the empty hole and then get a ruler or a pencil and make the line keep going to see what angle. In this case your answer is 65% I think.
If triangle ABC is similar WXY write a proportionality statement for the ratio of the sides of the triangle
There are many ways to answer this. Here is one answer shown below
AB/WX = BC/XY
On the left side is the ratio of AB over WX. These two sides are the bottom horizontal portions of the triangles. This is a visual indication that they correspond to one another. More concrete proof of this is that AB and WX are the first two letters of the sequences ABC and WXY respectively. The order is very important to help establish pairs like this.
On the right side of that equation above, we have BC and XY as the diagonal sides on the right part of each triangle. They are the last two letters of ABC and WXY respectively, which is a non-visual way to prove these two sides correspond.
It might help to line up ABC over top WXY so you can pick out the corresponding sides. I show this in the attached image below.
Answer: There are many ways to answer this.
Step-by-step explanation:
On the left side is the ratio of AB over WX. These two sides are the bottom horizontal portions of the triangles. This is a visual indication that they correspond to one another. More concrete proof of this is that AB and WX are the first two letters of the sequences ABC and WXY respectively. The order is very important to help establish pairs like this.
On the right side of that equation above, we have BC and XY as the diagonal sides on the right part of each triangle. They are the last two letters of ABC and WXY respectively, which is a non-visual way to prove these two sides correspond.
which equation in slope-intercept from represents the line that passes through (-1, 5) and (5, 8)
y= 1/2 x -11
y=-1/2 x +11/2
y= 1/2 x +11/2
y= -1/2 x -11/2
Answer:
y= 1/2 x +11/2
Step-by-step explanation:
To find the slope
m = (y2-y1)/(x2-x1)
= (8-5)/(5--1)
= 3/(5+1)
= 3/6
= 1/2
Using point slope form of a line
y-y1 = m(x-x1)
y-5 = 1/2(x--1)
y-5 = 1/2(x+1)
Distribute
y-5 = 1/2x +1/2
Add 5 to each side
y = 1/2x + 1/2 + 5
Change 5 to 10/2
y = 1/2x + 1/2 + 10/2
y = 1/2x + 11/2
Slope-intercept form:
y = mx + b
"m" is the slope, "b" is the y-intercept (the y value when x = 0) or (0,y)
To find the slope, you can use the slope formula and plug in the two points:
(-1,5) = (x₁ , y₁)
(5,8) = (x₂ , y₂)
[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
[tex]m=\frac{8-5}{5-(-1)}[/tex]
[tex]m=\frac{8-5}{5+1} =\frac{3}{6} =\frac{1}{2}[/tex]
y = 1/2x + b
To find "b", plug in either of the points into the equation:
(5,8)
y = 1/2x + b
8 = 1/2(5) + b
8 = 5/2 + b Subtract 5/2 on both sides
8 - 5/2 = b Make the denominators the same in order to subtract them
16/2 - 5/2 = b
11/2 = b
[tex]y = \frac{1}{2}x+\frac{11}{2}[/tex]
The 3rd option is your answer
HELP 10PTS!! what is the value of x?
Answer:
68
Step-by-step explanation:
Since this is an isosceles triangle the bottom 2 angles are equal. So both bottom angles are 56 degrees. The three angles of a triangle add to 180 degrees.
56+ 56+ x = 180
Combine like terms
112 +x =180
Subtract 112 from each side
112-112+x = 180-112
x =68
Answer the following questions showing all your work. You are trying to save up money by working in the summer. You have been able to secure two part time jobs. a. Your first job is to babysit a couple of times a week. You charge a flat fee of $10 for transportation back and forth to the house plus $5.50 per hour. Let t be the time in hours that you babysit. Write an algebraic expression to define the amount of money you will make for t hours of work. b. You also work at a local coffee shop in the mornings. You are paid $10 per hour. Write an algebraic expression to define the amount of money you will make for t hours of work. c. Write an algebraic expression for how much money will you will make for both jobs together.
PLEASE SHOW WORK
Solve using substitution
y=x+1
3x-y=9
y = x + 1 (*)
3x - y = 9 (**)
Substitute (*) to (**):
3x - (x + 1) = 9
3x - x - 1 = 9 add 1 to both sides
2x = 10 divide both sides by 2i
x = 5Put the value of x to (*):
y = 5 + 1
y = 6Answer: x = 5 and y= 6 → (5, 6). Name the axis or quadrant in which the point (−3, 2) lies.
A. Quadrant III
B. Quadrant II
C. x-axis
D. Quadrant I
Bonnie is making a dipping sauce. She mixes 150 milliliters of soy sauce with 100 milliliters of vinegar. How much soy sauce does Bonnie mix with every 1 milliliter of vinegar?
Answer:How much soy sauce does Bonnie mix with every 1 millimeter of vinegar is 1.5
How much vinegar does bonnie mix with 1 millimeter of soy sauce is .666
Step-by-step explanation: The first is 150 divided by 100 is 1.5
Complete the table to show how many yellow pencils there are if there are 5,7,9,11, or 13 blue pencils. How many of each type of pencil does shawna have if she has 55 pencils?
If there are 4 yellow pencils for each blue one, then this is the answer. If not then comment and tell me.
Blue Yellow
5 20
7 28
9 36
11 44
13 52
The required number of yellow and blue pencils are 44 and 11 respectively.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Here,
As Shawan has 4 yellow pencils for every blue pencil,
Let the number of blue pencils be b,
Now,
Yellow pencil (y) = 4 × b
Now,
put b = 5,7,9,11, or 13
So y = 20, 28, 36, 44, or 52
Now,
b + y = 55
when b = 11 and y = 44 sums of the pencil would be 55.
Thus, the required number of yellow and blue pencils are 44 and 11 respectively.
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100 POINTS!!!!!!!!!!!
The bottom one is < 1 and < 3
Answer:
B. <1 and <5
Step-by-step explanation:
they look exactly the same
Answer:
Correct answer is B. <1 and <5
Step-by-step explanation:
using the order of operations. select true or false for 81 ÷ 9 + 2 = 11
Answer: true
Step-by-step explanation: Using the order of operations, 81 / 9 would be first, which is equal to 9. Then, add 2. 2+9 = 11, so the answer is true.
Since division goes before addition we first divide 81:9 and get 9 and to that we add 2 addition goes after division. 9+2 is equal to 11 so the answer is True.
A good way to remember it is:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Hope this helps! <3
ANSWER THIS PLEEEEEEEEEEEEEEEEEEAAAAAAAAAASSSSSSSSSSSSEEEEEEEEEEE. I BEEEEEEEEEEEEEEEEEEEEGGGGGGGGGG OF YOOOOOOOOOOOOOOUUUUUUUUUWhat is the slope-intercept form of the function that contains the points (6, 2) and (4, 8)?
Answer:
y = -3x+20
Step-by-step explanation:
First we will write the equation in point-slope form,
[tex]y-y_1=m(x-x_1)[/tex], where m is the slope and [tex](x_1, y_1)[/tex] is a point on the line.
We must find the slope. The formula for slope is
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Using our two points, we have
m = (8-2)/(4-6) = 6/-2 = -3
We will use the first point and this slope:
y-2 = -3(x-6)
Using the distributive property, we have
y-2 = -3(x)-3(-6)
y - 2 = -3x--18
y - 2 = -3x+18
Add 2 to each side:
y-2+2 = -3x+18+2
y = -3x+20
For which value of X is the row in the table of values incorrect? The function is the quadratic function Y=3/4x^2
Answer:
x = 2
Step-by-step explanation:
check by substituting each given value of x into the function
x = 0 ⇒ y = [tex]\frac{3}{4}[/tex] × 0² = 0
hence (0, 0) is correct
x = 2 ⇒ y = [tex]\frac{3}{4}[/tex] × 4 = 3
hence (2, 4 ) is incorrect
x = 3 ⇒ y = [tex]\frac{3}{4}[/tex] × 9 = 6 [tex]\frac{3}{4}[/tex]
hence (3, 6 [tex]\frac{3}{4}[/tex]) is correct
x = 5 ⇒ y = [tex]\frac{3}{4}[/tex] × 25 = 18 [tex]\frac{3}{4}[/tex]
hence (5, 18 [tex]\frac{3}{4}[/tex]) is correct
Jim drove 605 miles in 11 hours. At the same rate, how many miles would he drive in 13 hours?
Answer: 715 Miles
Step-by-step explanation:
Divide 605 miles by 11 hours, which would give you how far he travels in 1 hour. (605/11=55) Since they give you 13 hours, multiply 13 hours by 55 miles which gets you 715 miles :)
write an equation of the line containing the specified point and perpendicular to indicated line. (-5,6) 4x-y=3
Answer:
y = [tex]\frac{1}{2}x + \frac{29}{4}[/tex]
Step-by-step explanation:
First, we need to rearrange the equation to make it y = mx + c
4x - y = 3
y + 3 = 4x
y = 4x -3
So the slope of the line is 4.
The slope of a line perpendicular to an equation is:
[tex]\frac{-1}{gradient}[/tex]
So the slope of the perpendicular line is:
[tex]\frac{-1}{4}[/tex] = -0.25
Now to find the equation of a line you can use the following equation:
y - y₁ = m(x - x₁)
Where y₁ is the y-coordinate, x₁ is the x-coordinate and m is the gradient. Plug the values in:
y₁ = 6
x₁ = -5
m = [tex]\frac{-1}{4}[/tex]
y - 6 = [tex]\frac{-1}{4}[/tex](x - - 5)
To get rid of the fraction we need to multiply the whole equation by 4:
4y - 24 = -1(x - - 5)
The two negatives cancel out:
4y - 24 = -1(x + 5)
Multiply the brackets out:
4y - 24 = -x + 5
Now, to rearrange the formula back into y = mx + c
Move the -24 over to the other side making it a +24:
4y = 2x + 5 + 24
4y = 2x + 29
Divide everything by 4:
y = [tex]\frac{2}{4}x + \frac{29}{4}[/tex]
y = [tex]\frac{1}{2}x + \frac{29}{4}[/tex]
Can some please help and how to do it with the work shown.
Will award brainiest to whoever answers and helps, I really need this ;;
Mathematics of personal finance:
Assume that the probability of a driver getting into an accident is 7.1%, the average cost of an accident is $14,886.05, and the overhead cost for an insurance company per insured driver is $110. What should the driver's insurance premium be?
A)$1156.43
B)$1242.93
C)$1276.27
D)$1165.49
Multiply the probability by the cost of the accident:
14,886.05 x 0.071 = 1056.91
Now add the overhead cost:
1056.91 + 110 = 1166.91
The closest answer to this is number D.
Answer:
D. $1165.49
Step-by-step explanation:
We have that the probability of a driver getting into an accident = 7.1% i.e. 0.071.
Now, the average cost of an accident = $14,886.05
Then, the expected cost of an accident = $14,886.05 × 0.071 = $1056.91
As, the overhead cost for insurance = $110
Therefore, the driver's insurance premium = $1056.91 + $110 = $1166.91
Since, the closest option to $1166.91 is option D.
Hence, the driver's insurance premium will be $1165.49.
The measures of the angles of triangle ABC are given by the expressions in the table
What are the measures of angles A and C
m/A = ? Degrees
m/C = ? Degrees
Answer:
[tex]m<A=125\°[/tex]
[tex]m<B=35\°[/tex]
Step-by-step explanation:
step 1
Find the value of x
we know that
The sum of the interior angles in a triangle must be equal to 180 degrees
so
[tex]m<A+m<B+m<C=180\°[/tex]
substitute the values and solve for x
[tex](6x-1)\°+20\°+(x+14)\°=180\°[/tex]
[tex]7x=180\°-33\°[/tex]
[tex]7x=147\°[/tex]
[tex]x=147\°/7=21\°[/tex]
step 2
Find the measure of angle A
[tex]m<A=(6x-1)\°=6(21)-1=125\°[/tex]
step 3
Find the measure of angle C
[tex]m<C=(x+14)\°=21+14=35\°[/tex]
Drag each expression to show whether it is equivalent to 36 + 9, 9(4 – 1), or (4 • 9) + (4 • 2).
Answer:
None of these are equivalent
Step-by-step explanation:
36 + 9 = 45
9(4 – 1) = 9* 3 = 27
(4 • 9) + (4 • 2) = 36+ 8 = 44
Write the fact family formed by these numbers 3 9 12
Answer:
The family formed by these numbers is 3x where x is any integer number.
Step-by-step explanation:
We have been given 3 9 12
We can see that given numbers are multiple of 3 so, we can say that the given numbers are from the family of 3x
Where x is any integer number when multiplied by 3 will give the multiple of 3.
Help with #27. Answer choices are
A. 2
B.5
C.3
D.4
Answer:
C
Step-by-step explanation:
Since GK bisects ∠FGH then ∠FGK = ∠KGH, hence
6v - 2 = 4v + 4 ( subtract 4v from both sides )
2v - 2 = 4 ( add 2 to both sides )
2v = 6 ( divide both sides by 2 )
v = 3 → C
(3x+7x-20) ÷ (x+4) can someone solve this?
Answer:
Alright well solve by dividing using polynomial division
10 - 60/x + 4 Hope this helps have a nice day :)
Step-by-step explanation:
What is the area of a parallelogram ABCD
Answer:
Area of a parallelogram would be 13.46
Step-by-step explanation:
Since area of a parallelogram is represented by the formula
Area = [tex]\frac{1}{2}[/tex] ([tex](D_{1}*D_{2})[/tex]
Where [tex]D_{1}[/tex] and [tex]D_{2}[/tex] are two diagonals of the given parallelograms.
In the given figure [tex]D_{1}=AC[/tex] and [tex]D_{2}[/tex] = BD
We will find the length of [tex]D_{1}[/tex] and [tex]D_{2}[/tex] first
Since points A and C are (3,6) and (5,1)
So distance AC = [tex]\sqrt{(6-1)^{2}+(3-5)^{2} }[/tex]
= [tex]\sqrt{5^{2}+(-2)^{2}}[/tex]
= [tex]\sqrt{25+4}=\sqrt{29}[/tex]
Since B and D are the points (6, 5) and (2, 2)
So length of BD = [tex]\sqrt{(6-2)^{2}+(5-2)^{2}}[/tex]
BD = [tex]\sqrt{4^{2}+3^{2}}=\sqrt{25}=5[/tex]
Now we will put these values in the formula
Area of parallelogram = [tex]\frac{1}{2}(\sqrt{29})(5)[/tex]
= [tex]\frac{5}{2}[/tex] × [tex]\sqrt{29}[/tex]
= (2.5) (5.385)
= 13.46
What is the value of y ?
Answer:the value of y is 44
Step-by-step explanation:
solve the system of equations. use any method you'd like:
5x+6y=-14
x-2y=10
To solve the system of equations, isolate x in the second equation and substitute it into the first equation. Simplify the resulting equation and solve for y. Substitute this value of y back into the second equation to find the value of x.
Explanation:To solve the system of equations:
From the second equation, isolate x by adding 2y to both sides: x = 10 + 2y.Substitute this value of x into the first equation: 5(10 + 2y) + 6y = -14.Simplify the equation and solve for y:50 + 10y + 6y = -14
16y = -64
y = -4
Substitute this value of y back into the second equation to find x:
x - 2(-4) = 10
x + 8 = 10
x = 2
Therefore, the solution to the system of equations is x = 2 and y = -4.
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Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n) = 5 + (n-1)(1/6)
[tex]A(n)=5+(n-1)\left(\dfrac{1}{6}\right)=5+\dfrac{1}{6}n-\dfrac{1}{6}=\dfrac{1}{6}n+\dfrac{30}{6}-\dfrac{1}{6}\\\\A(n)=\dfrac{n+29}{3}\\\\\text{Put n = 1, n = 4 and n = 10 to the formula:}\\\\A(1)=\dfrac{1+29}{3}=\dfrac{30}{3}=10\\\\A(4)=\dfrac{4+29}{3}=\dfrac{33}{3}=11\\\\A(10)=\dfrac{10+29}{3}=\dfrac{39}{3}=13[/tex]