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3 years ago

7x-4y=-7 5x+y=22 please show work

Mathematics

1 answer:

Keith_Richards [23]3 years ago

3 0

What exactly are you finding

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the jar above is filled to the top with hot fudge and sells for $3.99 what is the price per inch. also please use this as (3.14)

iogann1982 [59]

Its me again, please make sure to give me brainliest.

Answer:

0.25

Step-by-step explanation:

volume = 5 * 1 * pi = 15.7

So price per CI = 3.99 / 15.7 = 0.25414...

5 0

3 years ago

Answers: A and B B and D A and C B and C

tekilochka [14]

Answer:

A and B

I hope this helps you

5 0

4 years ago

Solve for x: |2x + 12| = 18

erastova [34]

|2x + 12| = 18

First, break down the problem into 2 equations . / 2x + 12 = 18 and -(2x + 12) = 18
Second, solve the first equation. / $2x + 12 = 18$
Subtract 12 from both sides. / $2x = 18 - 12$
Subtract 18 - 16. / $2x = 6$
Divide both sides by 2. / $x = \frac{6}{2}$
Simplify. / $x = 3$
Third, solve the second equation. / -(2x + 12) = 18
Simplify your brackets. / $-2x - 12 = 18$
Add 12 to both sides. / $-2x = 18 + 12$
Add 18 + 12. / $-2x = 30$
Divide both sides by -2. / $x = \frac{30}{-2}$
Simplify. / $x = -\frac{30}{2}$
Simplify. / $x = -15$
Fourth, collect the solutions. / $x = -15,3$

Answer: x = -15, 3

8 0

3 years ago

The price-demand and cost functions for the production of microwaves are given as

Nikolay [14]

Answer:

ALTERNATIVE 1

a. Find the profit function in terms of x.

P(x) = R(x) - C(x)

P(x) = (-60x² + 275x) - (50000 + 30x)

P(x) = -60x² + 245x - 50000

b. Find the marginal cost as a function of x.

C(x) = 50000 + 30x

C'(x) = 0 + 30 = 30

c. Find the revenue function in terms of x.

R(x) = x · p

R(x) = x · (275 - 60x)

R(x) = -60x² + 275x

d. Find the marginal revenue function in terms of x.

R'(x) = (-60 · 2x) + 275

R'(x) = -120x + 275

The answers do not make a lot of sense, specially the profit and marginal revenue functions. I believe that the question was not copied correctly and the price function should be p = 275 - x/60

ALTERNATIVE 2

a. Find the profit function in terms of x.

P(x) = R(x) - C(x)

P(x) = (-x²/60 + 275x) - (50000 + 30x)

P(x) = -x²/60 + 245x - 50000

b. Find the marginal cost as a function of x.

C(x) = 50000 + 30x

C'(x) = 0 + 30 = 30

c. Find the revenue function in terms of x.

R(x) = x · p

R(x) = x · (275 - x/60)

R(x) = -x²/60 + 275x

d. Find the marginal revenue function in terms of x.

R(x) = -x²/60 + 275x

R'(x) = -x/30 + 275

7 0

3 years ago

what is the slope of the line that passes through the points -10, 8 and -15 , -7 write your answer in simplest form 20 points

murzikaleks [220]

Answer: -3 fraction form

-5

Step-by-step explanation:

3 0

3 years ago