39 POINTS!! ALGEBRA. PLEASE HELP, I AM FAILING AND THIS IS DUE IN AN HOUR.
Answers
Answer:
Question 10: [tex]f(x)=1/2x-1[/tex] Question 13: [tex]f(-2)=-1[/tex] Question 11: [tex]f(8)=60[/tex]
Step-by-step explanation:
For Question 10:
The functionis in the form of [tex]f(x)[/tex]. We know the slope is [tex]\frac{1}{2}[/tex] (rise 1 run 2)and the y intercept is -1 (where the line goes through the y axis). We can then put the function is slope intercept form ([tex]y=mx+b[/tex]) and we would have [tex]f(x)=1/2x-1[/tex].
For Question 13:
To evaluate the function[tex]f(x)=\frac{3}{2} x-4[/tex] for [tex]f(-2)[/tex] we need to plug -2 into the function as x. [tex]f(-2)=\frac{3}{-2} (-2)-4[/tex]. [tex]\frac{3}{-2}[/tex] times -2 would equal 3 because the negatives cancle out. 3-4 equals -1 so the solution is [tex]f(-2)=-1[/tex].
For question 11:
Same as question 13. plug 8 into x in [tex]f(x)=x^2-4[/tex]. This would be [tex]f(8)=(8)^2-4[/tex]. 8 squared is 64 and 64-4 is 60. Therefore [tex]f(8)=60[/tex].
Related Questions
At the beginning of each school year, Madison Middle School orders new shirts for the entire student body. Each student receives
one shirt. Each shirt is the same price, s, and the school orders enough for n students. Which equation represents the
proportional relationship between P, the total price of the shirts, and the number of students?
NEED DONE NOW!!! WILL MARK BRAINLIEST
Answers
The equation representing the price of the shirt s, the number of students n and P is Option A.
sn = P
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the number of students be = n
Let the cost of each shirt be = s
The equation will be ,
So , the total cost of the shirt P = number of students x cost of each shirt
Total cost of the shirt P = n x s
So , the equation representing the proportional relationship is
P = ns
sn = P
Hence , The equation representing the price of the shirt s, the number of students n and P is Option A.
sn = P
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What is the slope of the line passing through the points (9,7) and (4,-3)?
Answers
Answer:
2
Step-by-step explanation:
slope = m = (difference in y)/(difference in x)
m = (-3 - 7)/(4 - 9)
m = -10/(-5)
m = 2
Work for 77.28 divided by 4.0
Answers
Answer:
19.32
Step-by-step explanation:
if 77.28 divided by 4.0 do long division and once you do that check yourself to see if you are correct
I hope I helped you guys! :)
Answer:
19.32
Step-by-step explanation:
a fish tank is shaped like a rectangular prism. It has a length of 5 feet, a width of 2 feet, and a height of 3 feet. what is the volume of the fish tank?
Answers
Answer:
30 ft
Step-by-step explanation:
It is 30 because to find the volume of a rectangular prism, you do
length x width x height.
So, 5 x 2 x 3 = 30.
To find the volume of a rectangular prism, multiply its length, width, and height. Thus, the volume of the fish tank measuring 5 feet in length, 2 feet in width, and 3 feet in height is 30 cubic feet.
Explanation:The volume of a rectangular prism such as a fish tank can be calculated by multiplying its length, width, and height together. For a fish tank with a length of 5 feet, a width of 2 feet, and a height of 3 feet, the volume calculation would look like this:
Volume = Length × Width × Height
Volume = 5 ft × 2 ft × 3 ft
Volume = 10 ft × 3 ft
Volume = 30 ft³
Therefore, the volume of the fish tank is 30 cubic feet.
Expand the expression (5x + 3)2, and write the result in standard form.
Answers
Expand
2 × 5x + 2 × 3
Simplify 2 × 5x to 10x
10x + 2 × 3
Simplify 2 × 3 to 6
= 10x + 6
The expanded expression in standard form for the given equation is [tex]\(25x^2 + 30x + 9\).[/tex]
To expand the expression [tex]\((5x + 3)^2\)[/tex], we use the distributive property, which states that for any real numbers [tex]\(a\), \(b\), and \(c\):[/tex]
[tex]\((a + b)^2 = a^2 + 2ab + b^2\).[/tex]
In this case,[tex]\(a = 5x\)[/tex] and[tex]\(b = 3\)[/tex]. Substituting these values into the formula, we get:
[tex]\[(5x + 3)^2 = (5x)^2 + 2(5x)(3) + 3^2\][/tex]
Now, let's compute each term:
1.[tex]\( (5x)^2 = 25x^2 \) (since \((a)^2 = a \times a\)).[/tex]
2. [tex]\(2(5x)(3) = 30x\) (by multiplying \(2ab\) where \(a = 5x\) and \(b = 3\)).[/tex]
3. [tex]\(3^2 = 9\).[/tex]
Now, summing up all the terms, we get:
[tex]\[ (5x + 3)^2 = 25x^2 + 30x + 9 \][/tex]
So, the expanded expression in standard form is [tex]\(25x^2 + 30x + 9\).[/tex]
Complete question:
Expand the expression (5x + 3)2, and write the result in standard form.
25. Find the area of the trapezoid. Leave your answer in simplest radical form. The figure is not drawn to scale.
please answer ASAP if you have the answers for the whole exam I'll take them to please
A.48cm^2
B.40cm^2
C.32cm^2
D.44cm^2
Answers
Answer:
Option D. [tex]44\ cm^{2}[/tex]
Step-by-step explanation:
we know that
The area of a trapezoid is equal to
[tex]A=\frac{1}{2}[b1+b2]h[/tex]
we have
[tex]b1=8\ cm[/tex]
[tex]b2=(4+8+2)=14\ cm[/tex]
[tex]h=4\ cm[/tex]
substitute the values
[tex]A=\frac{1}{2}[8+14](4)=44\ cm^{2}[/tex]
Answer:
D. 44cm^2
Step-by-step explanation:
Which of the following statements shows a characteristic of a statistical question?
Answers
Answer:
For a question to be statistical it has to have a specific population, room for a clear response, and a variability in the data.
An example of a statistical question is, "What is the typical amount of time it takes for a piece of gum to lose its flavor?" This is statistical because it accounts for a clear response, population, and variability.
Answer:
The question asks for a quantitative response.
Step-by-step explanation:
I did the 8.01 test, C was the correct answer.
Good luck FLVS students
If a data set has 20 data values, the number of values in the upper quartile is ?
Answers
Answer:
the answer is 5.5
explanation:
just did the test
Answer: The uper quatile Q3=15.75
Step-by-step explanation:
Q3=3/4(N+1)
Q3=3/4(20+1)
Q3=3/4(21)
Q3=63/4
Q3=15.75
Use the Distributive Property to write each expression as an equivalent algebraic expression.
(7 + a)3
Answers
Answer:
21 + 3a
Step-by-step explanation:
3 (7+a)
distribute 3 into parentheses:
21 + 3a
The distributive property states that one should simplify the expression by multiplying each term inside the parentheses by the term outside of them:
3*7=21
3*a=3a
21+3a
Hope this helps!!
How do i find quartiles, 1,2 and 3
Answers
Lower quartile=25% of total frequency/numbers in the data set
Median=50% of total frequency/numbers in the data set
Upper quartile=75% of total frequency/numbers in the data set
Hope this helps:)
Answer:
see explanation
Step-by-step explanation:
To obtain the quartiles arrange the data in ascending order
38, 47, 54, 60, 67, 68, 76, 77, 84, 89
Q₂ is the median
The median is the middle value in the data set. If there is no exact middle value then it is the average of the 2 values either side of the middle
Q₂ = [tex]\frac{67+68}{2}[/tex] = 67.5
Q₁ is the lower quartile and is the middle value of the data to the left of the median
Q₁ = 54
Q₃ is the upper quartile and is the middle value of the data to the right of the median
Q₃ = 77
A display of gift boxes has 1 box in the top row, 3 boxes in the next row, 5 boxes in the next row, and so on. There are 7 rows in all. How many gift boxes are in the display? Question 19 options: 64 boxes 47 boxes 36 boxes 49 boxes
Answers
Answer:
36 boxes
Step-by-step explanation:
For this case we have to increase two boxes each time we go to the next row. So:
1 row: 1
2 row: 3
3 row: 5
4 row: 7
5 row: 9
6 row: 11
7 row: 13
Adding the number of boxes we have:
[tex]1 + 3 + 5 + 7 + 9 + 11 + 13 = 49[/tex]
There are 49 boxes!
Answer:
Option D
Find area of a cone
Show work
Answers
Answer: 138.16 in²
Step-by-step explanation:
You need to use this formula to calculate the surface area of the cone:
[tex]SA = \pi r^2 + \pi rl[/tex]
Where "r" is the radius, "h" is the height and "l" is the slant height.
To find the height you need to use the Pythagorean Theorem:
[tex]a^2=b^2+c^2[/tex]
Where "a" is the hypotenuse and "b" and "c" are the legs of the triangle.
In this case:
[tex]a=l=7in\\\\b=r=\frac{8in}{2}=4in\\\\c=h[/tex]
("r" is the radius and "h" is the height and "l" is the slant height.)
You need to find "h". Then, solving for "h", you get:
[tex]h=\sqrt{(7in)^2-(4in)^2}\\h=5.74in[/tex]
Then, substituting values into the formula, you get:
[tex]SA = (3.14)(4in)^2 + (3.14) (4in)(7in)=138.16in^2[/tex]
Which is true about the line whose equation is y + 3 = 0?
The slope is zero.
The y-intercept is 3.
The slope is 3.
The value of x always equals the value of y.
Answers
the value of x always equals zero
Answer:
The slope is zero.
Step-by-step explanation:
The y-int is -3, the slope can't be 3, and the value of x isn't equal to y, if it was the lines would be intersecting
Ed decides to include more fruit in his diet he go to the grocery store over the weekend and buy six apples six oranges and six avocados the total cost is $19.50 write an equation
Answers
A=apple o=orange a=avocado
6A+6o+6a=19.50
Happy To Help! :D
Answer:
x + y + z = 3.25
Step-by-step explanation:
We are given that Ed buys six apples, six oranges and six avocados and their total cost is $19.50.
We are to write an equation representing this.
Assuming apples to be x, oranges to be y and avocados to be z, we can write it as:
[tex] 6 x + 6 y + 6 z = 1 9 . 5 0 [/tex]
Simplifying it by taking the common out to get:
[tex]x+y+z=3.25[/tex]
Terri wrote the equation using slope-intercept form for the line that passes through the points (4, 6) and (–2, 3).
Which best describes Terri’s first error?
In step 1, the slope of the line should be 1/2.
In step 2, she should have substituted the point (4, 6).
In step 3, she should have subtracted 4 from both sides of the equation.
In step 4, the m and b values should be switched.
Answers
Answer:
Step 1 is incorrect.
Step-by-step explanation:
The slope = difference of y values / difference of x values so Step 1 is incorrect. The slope is (6-3)/ ((4 - (-2)) = 1/2. He worked out x differences / y differences.
Answer: A: In step 1, the slope of the line should be 1/2.
1/5 can paint covers 1 wall how many with walls with 2 cans
Answers
Answer:
10
Step-by-step explanation:
1/5*10=2 cans so 1*10 is 10 walls
What is the least common multiple of the two denominators 6/8 and 4/32
Answers
The least common multiple (LCM) of the denominators 6/8 and 4/32 is 12.
Explanation:The least common multiple (LCM) of two numbers is the smallest number that is divisible by both numbers.
To find the LCM of the denominators 6/8 and 4/32, we need to find the LCM of 6 and 4.
The LCM of 6 and 4 is 12.
Therefore, the LCM of 6/8 and 4/32 is 12.
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To find the LCM of the denominators 8 and 32, we prime factorize them, identify the highest power of each prime number, and multiply these together. The LCM of 8 and 32 is 32.
To find the Least Common Multiple (LCM) of the denominators from the fractions 6/8 and 4/32, follow these steps:
Identify the denominators: 8 and 32.
Prime factorize each denominator:
8 = 2 × 2 × 2 (2³)32 = 2 × 2 × 2 × 2 × 2 (2⁵)Identify the highest power of each prime number that appears in the factorizations. Here, the highest power of 2 is 2⁵.
Multiply the highest powers of all the primes together to find the LCM: LCM = 2⁵ = 32.
So, the LCM of the denominators 8 and 32 is 32.
One cell phone plan charges $20 per month plus $0.15 per minute used. A second cell phone plan charges $35 per month plus $0.10 per minute used. Write and slice an equation to find the number of minutes you must talk to have the same cost for both calling plans.
Answers
Answer:
300 minutes
Step-by-step explanation:
Let
x----> the numbers of minutes used
y ---> the cost per month
we know that
First cell phone plan
y=0.15x+20 ---> equation A
Second cell phone plan
y=0.10x+35 ---> equation B
equate the equation A and equation B
0.15x+20=0.10x+35
Solve for x
0.15x-0.10x=35-20
0.05x=15
x=15/0.05
x= 300 minutes
Find the cost y
y=0.15(300)+20 =$65
That means
For x=300 minutes
The cost for both calling plans is y=$65
The Roosevelts and the Jaspers live in the same city and pay the same sales
tax rate, and both families made $16,000 in taxable purchases last year, if the
Roosevelts made $91.000 and the Jaspers made 37000 last year, is the
sales tax in their city an example of a regressive tax?
Answers
Answer:
Yes, because the Jaspers paid a higher percentage of their income in sales tax than the Roosevelts did.
Step-by-step explanation:
Regressive tax is a constant, instead of a percentage of income. Those with a lower income would pay a higher percentage of their income. Both families, irregardless of income, paid $16,000 in taxes.
APEX
Answer:
Yes, because the Jaspers paid a higher percentage of their income in sales tax than the Roosevelts did.
Step-by-step explanation:
A regressive tax is one that collects a smaller percentage of the income as the person earns more. That is to say that at higher profit or higher income, the percentage of taxes that must be paid on the total tax base is lower.
In this way the poor are relatively more affected than the rich.
The Roosevelts made $91.000 (high income)
The Jaspers made $37.000 (low income)
But both paid the same sales tax rate of $16,000.
This type of tax does not have a redistribution effect of wealth. On the contrary, if it is a very high tax, it can accentuate inequality in a society.
Calculate the mean of this data set.
Answers
Answer:
The mean of the data set is 5.
Step-by-step explanation:
Add the numbers in the data set:
6+3+16+12+21+8+9
= 75
Then divide by the amount of values in the data set:
75/15
=5
The mean of this given data set is 15.
What is the mean of this data set?Given:
A data set is given in the image.Find:
The mean of the given data set.Solution:
A mean is the average of a data set.
We find the mean by adding all numbers together and then dividing the sum of the numbers by the number of numbers.
Now, a summation of number = 2+4+4+7+2+6+7+4+8+2+3+6+9+4+7 = 75
Now, there are total of 15 data given.
Therefore, mean = 75/15 = 5.
Hence, the mean of the given data set is 15.
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Kristen has $16.26 for a buffet. There is an entrance fee of $5.31 with a $2.96 charge for every pound of crab legs ordered. This situation is modeled by the equation 2.96p + 5.31 = 16.26, where p represents the number of pounds of crab legs ordered. How many pounds of crab legs can Kristen eat at the buffet? (round to the nearest tenth of a pounds of crab legs ordered)
Answers
Answer:
Step-by-step explanation:
8 pounds
Answer:
8 pounds
Step-by-step explanation:
A member of congress is interested in
whether her constituents favor a proposed
gun-control bill. Her staff reports that 361
letters on the bill have been received and
323 of these oppose the bill. What is the
sample size?
A. 684
B. 38
C. 361
D. 323
Answers
Answer:361
Step-by-step explanation:
The sample size in this scenario is defined by the total number of letters received by the member of Congress, regardless of their stance on the bill. Therefore, the sample size is 361.
Explanation:In statistics, the term 'sample size' refers to the number of observations or measurements used in a study or experiment. In this particular case, the member of Congress is interested in the views of her constituents on a proposed gun-control bill. The total number of letters received - regardless of whether those letters support or oppose the bill - forms the sample size.
In this context, the total number of letters is 361, so option C is the correct answer. It doesn't matter how many of these letters were in favor or against the bill; all of them constitute the sample. The number of letters opposing the bill (323) is a part of the total sample, not the sample size itself.
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What is the constant to
Answers
I take it the constant in this case it'll just be the coefficient, thus
[tex]\bf -\cfrac{2a^3}{7}\implies \stackrel{\stackrel{constant}{\downarrow }}{-\cfrac{2}{7}}a^3[/tex]
what is the midpoint of (-7,5)(7,3)
Answers
Answer:
(1,4)
Step-by-step explanation:
Answer:
The correct answer is (0,4)
Step-by-step explanation:
What is the value of tan B?
6/8
8/10
8/6
6/10
Answers
Answer:
8/6Step-by-step explanation:
[tex]tangent=\dfrac{opposite}{adjacent}\\\\\text{We have}\\\\opposite=8cm\\adjacent=6cm\\\\\text{substitute:}\\\\\tan B=\dfrac{8}{6}=\dfrac{8:2}{6:2}=\dfrac{4}{3}[/tex]
solve for x: 6(4x+5)=3(x+8)+3
Answers
Answer:
x=-1/7
Step-by-step explanation:
6(4x+5)=3(x+8)+3
Distribute
24x +30 = 3x+24 +3
Combine like terms
24x+30 = 3x +27
Subtract 3x from each side
24x-3x+30 = 3x-3x+27
21x +30 = 27
Subtract 30 from each side
21x +30-30 = 27-30
21x = -3
Divide each side by 21
21x/21 = -3/21
x = -1/7
Answer:
-1/7
-0.14
Step-by-step explanation:
Help and please show work
Answers
Answer:
5 unitsStep-by-step explanation:
The formula of a distance between two points:
[tex]d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]
We have the points (1, 2) and (-3, 5). Substitute:
[tex]d=\sqrt{(-3-1)^2+(5-2)^2}=\sqrt{(-4)^2+3^2}=\sqrt{16+9}=\sqrt{25}=5[/tex]
What is 5/6÷3/8 in simplelest form
Answers
For this case we must simplify the following expression:
[tex]\frac {\frac {5} {6}} {\frac {3} {8}} =[/tex]
Applying double C we have:
[tex]\frac {5 * 8} {6 * 3} =\\\frac {40} {18} =[/tex]
Dividing numerator and denominator between 2:
[tex]\frac {20} {9}[/tex]
ANswer:
[tex]\frac {20} {9}[/tex]is the simplified form
Please help I will mark brainliest!!! (10 points)
Answers
Answer:
A: 700
B: 6400
C: 50
Step-by-step explanation:
A: You can multiply by 5
B: You can just multiply by 20.
C: Every 10% is 5, because 15(30%)/3 is 5. 5 times 10 is 50.
Answer:
a. h = 700
b. j = 6400
c. g = 50
Step-by-step explanation:
Translate each statement into an equation and solve the equation. Remember that to change a percent to a decimal, you divide the percent by 100, which is the same as moving the decimal point two places to the left. Also, a percent of a number means a percent times the number.
a. 20% of h is 140
20% * h = 140
0.2h = 140
Divide both sides by 0.2
h = 700
b. 5% of j is 320
5% * j = 320
0.05j = 320
Divide both sides by 0.05
j = 6400
c. 30% of g is 15
30% * g = 15
0.3g = 15
Divide both sides by 0.3
g = 50
Ron is slicing 5 pizzas each pizza slice is 1/8 of the pizza. How many pizza slices will be there in all
Answers
Answer:
there would be 40 slices of pizza
Step-by-step explanation:
If 5 pizzas each have 8 slices you multiply 5 X 8 which equals 40 slices
Answer:
there would be 40 slices of pizza.
Step-by-step explanation: