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Alex17521 [72]
3 years ago
11

Evaluate the expression 4x^2 + 3y for x = 5 and = 6.

Mathematics
1 answer:
arsen [322]3 years ago
6 0

Answer: 118

Step-by-step explanation:

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Answer:

Yes?...............

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3 years ago
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Volume = 4,410 yd<br> 30 yd<br> radius =
Y_Kistochka [10]

Answer:

Radius = 11.85yd

Step-by-step explanation:

Volume of a Cone formula: V = πr²(h/3)

We know that;

V = Volume

r = radius

π = pi (this is a sign located on your calculator)

h = height

We are given that;

V = 4,410

r = unknown

h = 30

Let's substitute the values in:

=> V = πr²(h/3)

=> 4,410 = πr²(30/3)

=> 4,410 = πr²(10)

=> 4,410 / 10 = πr²

=> 441 = πr²

=> 441 / π = r²

=> 140.37 = r²

=> \sqrt{140.37} = r

=> 11.85 = r

Therefore, <u>the radius of the cone = 11.85yd</u>

Hope this helps!

8 0
2 years ago
If a triangle being has an area of 10 square feet what is the length and width of the cover
bekas [8.4K]
Question needs elaboration.

7 0
3 years ago
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
You have 15 dollars and earn 50 more dollars doing chores. You then go to the store to buy a shirt for 10 dollars. How much mone
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50 + 15= 65-10= $55 left
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