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3 years ago

7

Out of 60 people surveyed at the movies, 45 people said they bought popcorn.If there were 420 people at the movies how many woul

d expect to buy popcorn

1 answer:

zhenek [66]3 years ago

6 0

Answer:

315

Step-by-step explanation:

45/60 = 3/4

3/4 * 420 = 315

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labwork [276]

Domain is the numbers you can use
range is the result of inputing the domain

an interesting fact is that the inverse of a function switches the domain and range

basically
the domain of f(x) becomes the range of f^-1(x)
the range of f(x) becomes the domain of f^-1(x)
so just find the domain and range of f(x)

$f(x)=3x- \frac{1}{2}$
there are no restrictions
all real numbers can be used
all real numbers can result

so the answer is domain and range for both is all real numbers

D is answer

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3 years ago

Given a profit equation of P = -100p^2 + 21850p - 800000, determine the maximum profit, P to the nearest cent.

Ratling [72]

Answer:it is D

Step-by-step explanation:

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3 years ago

This question is too hard

Aleonysh [2.5K]

Answer:

7.50 is the answer to the question

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2 years ago

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Set up an equation to show (×+2)×5=y

Masteriza [31]

<span>5x+10 = y

Subtract 10 from both sides.

5x = y - 10

Divide both sides by 5.

x = 1/5y - 2

Plugin 1/5y - 2 for the y.
5(1/5y - 2)
1 - 10 + 10 = y

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</span><span>Your Answer(s)
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3 years ago

A 180 ft long board is cut into 3 pieces. The second piece of

blagie [28]

Answer:

20 feet

Step-by-step explanation:

1st piece = x

2nd piece = 2x

3rd piece = 6x

x+2x+6x=180

9x=180

x=20

so the first piece is 20 feet, the second is 40, and the third is 120.

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