*20 POINTS*

The total number of seats in an auditorium is modeled by f(x) = 2x^2 - 6x, where x represents the number of rows of seats. How
many rows are there in the auditorium if it has a total of 540 seats?

A) 15
B) 22
C) 30
D) 18

Answers

Answer 1

Answer:

D) 18

Step-by-step explanation:

2x² - 6x = 540

2x² - 6x - 540 = 0

(2x + 30)(x - 18) = 0

x - 18 = 0

x = 18

2x + 30 = 0

2x = -30

x = -15; this cannot be the answer as it is negative


Related Questions

PLZ HELP i jus want answer

Answers

Answer:

B. midpoint

Step-by-step explanation:

UT is located in the middle of UT as the lengths of ST and US are equal

need helppp now please

Answers

Answer:

The pyrenees; mountains between Spain and France

Step-by-step explanation:

Answer:

The answer would be Russia

Step-by-step explanation:

Hope this helps

help me please???? thanks

Answers

C and d are your answers, can u rate, thanks, brainliest, and have a good day

Answer:

Thw answer is C. 2(2b+1).

answers for 1-3 plsss

Answers

Answer:

1.sans 2.robox 3.free robux

Step-by-step explanation:

robloz free robuz

I need this answer asap

Answers

Answer:

247

Step-by-step explanation:

the answer is 247!!!!!!!!!!!!!!!!!!

HELPPP. Find the line that has the mistake?

Answers

Answer:

Line 4

It is right

A linear equation is shown.

y
+
2
=
24

Which is the best description of the slope of the graph of this equation?


The slope is negative.

The slope is negative.

The slope is positive.

The slope is positive.

The slope is zero.

The slope is zero.

The slope is undefined.

Answers

Answer:

The slope is negative

Step-by-step explanation:

The equation is y+2x=24

We need to put this in slope intercept form to find the slope:

Subtract 2x on both sides:

y=-2x+24

(y=mx+b)

(m is slope) (b is y-intercept)

Thus the slope is negative

Since it is -2x

Hope this helps!

Suppose that h(x) = 4x – 5 and h(b) = 17. What is the value
of b?
(A) 4
(B) 5.5
(C) 10
(D) 17.5

Answers

Answer:

5.5

Step-by-step explanation:

that is the answer....

i like boys
the subject is your mom

Answers

Answer:

i like woman

Step-by-step explanation:

the subject is your dad

Any one know the y intercept?
y=2x+-3

Answers

Answer: -3

Step-by-step explanation:

the number at the end of the equation is the y-intercept. it's called "slope-intercept" form because the 2x that is at the beginning represents the slope, and the -3 at the end represents the y-intercept.

hope this helps!

Answer:

x= 3/2

Solution:

y=2x-3

Substitute y=0

0=2x-3

Move the variable to the left

-2x=-3

Divide by both sides

x= 3/2

Suppose the linear regression line y= 4.009x- 77.531 predicts a pizza parlor's profits based on the number of pizzas sold. If x represents the number of pizzas sold, and yrepresents the pizza parlors profits in dollars, about how much can the pizza parlor expect in profits if it sells 325 pizzas?​

Answers

Answer:

The estimated profit is 62.784

Step-by-step explanation:

y = 4.009x - 77.531

Plug in the number of pizzas sold for x:

y = 4.009(35) - 77.531 = 140.315 - 77.531 = 62.784

Answer:

$1225

Step-by-step explanation:

When you take y=4.009x-77.531

x=325

y=4.009(325)-77.531

Answer would be $1225

PLSS HELP ASAP!! I WILL GIVE YOU BRAINLYEST!!ONLY ANSWER IF U KNOW HOW TO!!

What is the difference between how you find the surface area of rectangular
prisms and how you find the surface area of triangular prisms? (write in complete sentences)

Answers

Triangular prism formula is w•(1/3b•h) while rectangular prisms formula is b•h•w

b- base h- height w- width

2+3=8,
3+7=27,
4+5=32,
5+8=60,
6+7=72,
7+8=??

Answers

Answer:

98

Step-by-step explanation:

Markus receives the same amount of money from his grandfather
for one week. After the first day he received $5. After the second day
he had received $10 total, and after the third day he had $15. If this
continues, how much money will Markus have by the end of the 7 day
week?

Answers

5 x 1 = 5
5 x 2 = 10
5 x 3 = 15

5 x 7 = 35

6
7
8
Y
U
O
Р
HIK
Help please :)

Answers

Answer:

oojjojojojo

Step-by-step explanation:

gjj h 7/4 to the third power Chelsea is making a kite in the shape of a triangle. To determine if the triangle is a right triangle, Chelsea completed the following steps.

Step 1:

Find the side lengths of the triangle: 30 inches, 24 inches, 18 inches.

Step 2:

Substitute the values into the Pythagorean theorem: 18 squared + 24 squared = 30 squared.

Step 3:

Combine like terms: (18 + 24) squared = 30 squared.

Step 4:

Evaluate each side: 1764 not-equals 900.

Chelsea says the triangle is not a right triangle. Which best describes the accuracy of her explanation?

The triangle is actually a right triangle. In step 2, Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is not a right triangle, but in step 2 Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is actually a right triangle. In step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

The triangle is not a right triangle, but in step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

Select all the equations where z=5 is a solution.

Answers

Answer:

A,D,E

Step-by-step explanation:

A) (5)+3=8

D)12x5=60

E) 12+5=17

A car salesperson makes 25% commission on each car sold. If the salesperson just sold a vehicle for $42,000, how much in commission was made?

Answers

Answer:

$10500

How I Found This Answer:

$42000 ÷ 4 = $10500

Hope This Helps.

Pls Help me I’ll give brainliest

Answers

Answer:

3. 6/10 9/15 4. 62.5/100 0.625 5. 6/25 %24 6. 0.62 %62

Step-by-step explanation:

You have to find two numbers that would also be quivilant to whatever number. Please mark branliest.

Addition and Subtraction of Radical Expression

-Salamat

Answers

Given:

The radical expression is

[tex]7\sqrt[3]{8x^2y}+2\sqrt[3]{27x^5y^4}[/tex]

To find:

The value of the expression after addition.

Solution:

We have,

[tex]7\sqrt[3]{8x^2y}+2\sqrt[3]{27x^5y^4}[/tex]

It can be rewritten as

[tex]=7\sqrt[3]{2^3x^2y}+2\sqrt[3]{3^3x^3x^2y^3y}[/tex]

[tex]=7(2)\sqrt[3]{x^2y}+2\sqrt[3]{(3xy)^3x^2y}[/tex]

[tex]=14\sqrt[3]{x^2y}+2(3xy)\sqrt[3]{x^2y}[/tex]

[tex]=14\sqrt[3]{x^2y}+6xy\sqrt[3]{x^2y}[/tex]

Taking out the common factors, we get

[tex]=2\sqrt[3]{x^2y}(7+3xy)[/tex]

The value of given expression after addition is [tex]=2\sqrt[3]{x^2y}(7+3xy)[/tex].

How many cubes with an edge length of 1/2 inches are needed to fill a rectangular prism that is 2 in by 2 in by 3 in? HELPPPPPP

Answers

since the volume of the prism is 12 (2x2x3), and the volume of the cubes is 1/8 (1/2 x 1/2 x 1/2), you would multiply divide 12 by 1/8 to find the number of cubes you need

12 x 8 equals 96, meaning you need 96 cubes

Answer: 96 cubes


At Paulson Middle School, 75% of the sixth grade class is making a B or higher. If there are 21 students
making a B or higher, then how many students are in the class?

Answers

Answer:

28 students

Step-by-step explanation:

x = Number of students

21 students = 75 percent of x = 3/4 x

3/4 x = 21

x = 21 * (4/3) = 7*4 =  28

Answer:

About 16

Step-by-step explanation:

Jasmine took her family out for dinner. The bill came for $79.33. If the sales tax is 9.5% and
she plans to tip 20%, how much will she pay in total? Assume that the tip will include the
dinner with tax. (Hint: You need to calculate the tax of the bill and then add it to the bill
before calculating the tip).

Answers

79.33 * 1.095 = 86.87 + 20%tip = 86.87*1.2=$104.25

75% of what equals 48?

Answers

Answer:

75 percent of 64 = 48

Step-by-step explanation:

Answer: =36

Step-by-step explanation:

Two less than 3times a number is the same as the number plus 10.

Answers

5 is the number

3n - 2 = n + 10 add 2 to both sides
3n = n + 10 subtract n from both sides
2n = 10 divide both sides by 2
n = 5

Answer:

6

Step-by-step explanation:

3n - 2 = n + 10.    add 2

3n = n + 12           subtract n from both sides

2n = 12.                divide by 2

N = 6

The number is 6

Write: y - 6 = -12(x+4) in slope intercept form-

Answers

Answer:

y= -12x - 42

Step-by-step explanation:

slope intercept form is y=mx +b

y-6 = -12(x+4)     simplify

y - 6 = -12x - 48    separate y by adding 6 to both sides of the equation

y = -12x - 42

8. Your doctor records your height x (in inches) and your weight y (in
pounds) each time you have a medical exam.
Is this a function?

Answers

No, this is not a function

simplificación de la fracción 132/165​

Answers

Answer: 4/5

Step-by-step explanation: Just divide 132/165 and get 0.8 which we know is equal to 4/5.

Simplemente divida 132/165 y obtenga 0.8, que sabemos que es igual a 4/5.

Answer:

4/5

Step-by-step explanation:

132/165

11*3*4/11*3*5

4/5

an item sells for 40$. thr sales tax on the item is 8%. what is the sales tax and total cost ​

Answers

Net Amount (excluding tax)$40.00

Tax (8.0%)$3.20

Gross Amount (including tax)$43.20

In a survey, 27% of the people chose salads over a meat dish. In all, 81 people chose salads. How many people were in the survey.

Answers

Answer:

300 people were in the survey

Step-by-step explanation:

27 percent of the total chose salad over meal. That 27 percent equals  81 people and the question is how many people were in total?

      27 %    -   81 people

      100%  -    X?

100 x 81 / 27  =   300

Which of the following expressions are equivalent to log base 2 24

Answers

Answer:

Option A, Option B and option D

Step-by-step explanation:

㏒₂  72 - ㏒₂ 3 = ㏒₂ (72 ÷ 3)

                        = ㏒₂ 24

2 ㏒₂ 2 + log₂ 6 = log₂ 2² + log₂ 6

                          = log₂ 4 + log₂ 6

                         = log₂ (4*6)

                        = log₂ 24

log₂ 6 + log₂ 4 = log₂ (6*4)

                        = log₂ 24

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