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trapecia [35]
3 years ago
8

This beach ball has a surface area of 452.16 inches². What is its diameter? Use 3.14 for π. inches

Mathematics
2 answers:
Liula [17]3 years ago
3 0

Answer:

6

Step-by-step explanation:

Ludmilka [50]3 years ago
3 0

Answer:

6

Step-by-step explanation:

just took test

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If
Nitella [24]

Since profit can't be negative, the production level that'll maximize profit is approximately equal to 220.

<h3>How to find the production level that'll maximize profit?</h3>

The cost function, C(x) is given by 12000 + 400x − 2.6x² + 0.004x³ while the demand function, P(x) is given by 1600 − 8x.

Next, we would differentiate the cost function, C(x) to derive the marginal cost:

C(x) = 12000 + 400x − 2.6x² + 0.004x³

C'(x) = 400 − 5.2x + 0.012x².

Also, revenue, R(x) = x × P(x)

Revenue, R(x) = x(1600 − 8x)

Revenue, R(x) = 1600x − 8x²

Next, we would differentiate the revenue function to derive the marginal revenue:

R'(x) = 1600 - 8x

At maximum profit, the marginal revenue is equal to the marginal cost:

1600 - 8x = 400 − 5.2x + 0.012x

1600 - 8x - 400 + 5.2x - 0.012x² = 0

1200 - 2.8x - 0.012x² = 0

0.012x² + 2.8x - 1200 = 0

Solving by using the quadratic equation, we have:

x = 220.40 or x = -453.73.

Since profit can't be negative, the production level that'll maximize profit is approximately equal to 220.

Read more on maximized profit here: brainly.com/question/13800671

#SPJ1

6 0
2 years ago
15. A survey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand X aspirin. How many doctors use brand X asp
Inga [223]
Since 3 out of 5 doctors (60%) use brand X, solve for 60% of 2,000, which is 1,200 doctors. 
8 0
3 years ago
HELP?????????????????????/
Gemiola [76]

Answer:

you have to make x-3 and x-7 equal to zero...

x = 3 or x=7

"A"

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Emily gad a decorative box that is shaped like a cube with a height of 5 inches. What’s the surface area of the box?
lina2011 [118]

times the length by width and you will get your answer use a calculator that will be the answer

4 0
3 years ago
A 20 foot ladder is leaning against the side of a building. The bottom of the ladder is 4 feet from the wall. How many feet abov
Semenov [28]
It form a right triangle
legnth of ladder is hypotonuse
bottom of ladder from wall distance is one leg
distance up wall is other leg
a^2+b^2=c^2
c=hypotonuse and a and b are legs

4^2+b^2=20^2
16+b^2=400
minus 16 both sides
b^2=384
sqrt both sides
b=8√6 ft
aprox
b=19.59ft from ground
6 0
3 years ago
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