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3 years ago

SOMEONE, PLEASE HELP ME OUT!!!!!! WILL MARK BRAINLIEST

Mathematics

1 answer:

Hitman42 [59]3 years ago

6 0

Answer:

see below

Step-by-step explanation:

19. (4x + 8x² - 8) + (x² + 7 - 4x)

= 4x + 8x² - 8 + x² + 7 - 4x

= 8x² + x² + 4x - 4x -8 + 7

20. (7x² - 11 + 16x) + (5x - 3x² - 7)

= 7x² - 11 + 16x + 5x - 3x² - 7

22. (4x² - 12x - 10) - (2x² + x - 3)

= 4x² - 12x - 10 - 2x² - x + 3

23. (7x³ - 9x² - 14x) - (4x³ - 4 - x)

= 7x³ - 9x² - 14x - 4x³ + 4 + x

= 7x³ - 4x³ - 9x² - 14x + x + 4

25. (9x² + 24x - 8) - (5x² + 3x + 10)

= 9x² + 24x - 8 - 5x² - 3x - 10

26. (5x - 12x² + 9x³) - (5x³ + 6x - 3)

= 5x - 12x² + 9x³ - 5x³ - 6x + 3

28. (2x² - 1 + 3x³) + (5 - 13x - 11x²)

= 2x² - 1 + 3x³ + 5 - 13x - 11x²

30. (10x - x² + 8) + (5x² + 1 - 22x)

= 10x - x² + 8 + 5x² + 1 - 22x

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

Nikolay [14]

Answer:

<u>ALTERNATIVE 1</u>

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

<u>ALTERNATIVE 2</u>

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

Help me out with this^^

sergij07 [2.7K]

Answer: 76 m^2

Step-by-step explanation:

$A=\frac{4+15}{2}*8 = 76\;m^2$

3 0

3 years ago

Please help! This is grade 5 work

tatuchka [14]

Answer:

7 X 8 = 56

6 X 8 = 48

8 X 8 = 64

8 X 11 = 88

8 X 16 = 128

If the division is left divided goes into the right then it would be:

72 divided by 3 = 24

17 divided by 3 = 5.66666

11 divided by 3 = 3.66666

9 divided by 3 = 3

216 divided by 3 = 72

If the division is right divided goes into the left then it would be:

24 divided by 3 = 8

33 divided by 3 = 11

51 divided by 3 = 51

27 divided by 3 = 9

72 divided by 3 = 24.

Step-by-step explanation:

for the first problem you multiply the left numbers by the 8 to get the right numbers and to get the left numbers you divide the right numbers by 8.

For the second problem if the division is left divided goes into the right then it would be for getting the left numbers multiply the right numbers by 3 and for getting the right numbers just divide the left by 3 but if the division is right divided goes into the left then it would be the exact same process as before but in this one if you are getting the left numbers just divide the right by and if you getting the right numbers then multiply the left numbers by 3.

ps: sorry this answer is long.

7 0

4 years ago

What is the surface area, in centimeters, of a cube with a side length, s. of 1/3cm?

jek_recluse [69]

6/9 = 2/3 cm^2
good luck :))))

6 0

3 years ago

A parabola is defined by the equation x2 = 3/4 y. In which direction will the parabola open?

TEA [102]

The equation of parabola is $x^2=\dfrac{3}{4}y$ .
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4 years ago