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3 years ago

Can someone help me with this problem

Mathematics

1 answer:

hichkok12 [17]3 years ago

8 0

Explanation:

angle A and 121.1° are supplementary angles, so they add up to 180°. therefore, we would need to subtract 121.1 from 180 to find angle A:

180 - 121.1 = 58.9°

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guapka [62]

<h3>Answer:</h3>

domain = { 0, m, 8, 6 }

range = { q, 6 , 8, m }

7 0

3 years ago

If 30,000 cm2 of material is available to make a box with a square base and an open top, find the largest possible volume of the

Ilya [14]

Answer:

The largest possible volume of the box is 500,000 cm³

Step-by-step explanation:

Let the a side of the square base = x

let the height of the box, = h

volume of the box, v = hx²

Surface area of the box, A = 4hx + x²

30000 = 4hx + x²

make h the subject of the formula;

$4hx + x^2 = 30000\\\\4hx = 30000 -x^2\\\\h = \frac{30000 -x^2}{4x}$

Volume of the box, V = hx²

$V = h*x^2 = (\frac{30000-x^2}{4x} )x^2\\\\V = \frac{30000x^2 -x^4}{4x} \\\\V = \frac{30000x^2}{4x} - \frac{x^4}{4x} \\\\V = 7500x- \frac{x^3}{4}$

At maximum value of V, dv/dx = 0

$\frac{dv}{dx} = 7500 - \frac{3}{4} x^2\\\\0 = 7500 - \frac{3}{4} x^2\\\\\frac{3}{4} x^2 = 7500\\\\x^2 = 10000\\\\x = \sqrt{10000} \\\\x = 100$

Substitute in the value of x to determine the maximum volume, V;

$V = 7500x - \frac{x^3}{4} \\\\V = 7500(100) - \frac{1}{4} (100)^3\\\\V = 750000- 250000\\\\V = 500,000 \ cm^3$

Therefore, the largest possible volume of the box is 500,000 cm³

4 0

4 years ago

Which equation is true for the value b = 2?

marta [7]

A. b = 3
B. b = 2
C. b = 4
D. b = 3/2

So, here I state the answer to this problem is (B)

Have a great day.
Glad to help out!

5 0

3 years ago

HELP ASAP I GIVE BRAINLESS!!!!!!!!!!!! ALSO GIVE 50 POINTS!!!!!!

djyliett [7]

Answer:

comparing number

Step-by-step explanation:

the answer is comparing numbers

5 0

3 years ago

Tenho a seguinte escolha: ou compro 20 unidades de um produto com todo o dinheiro que tenho, ou compro apenas 14 unidades e aind

alexdok [17]

Answer: The price for the product is R$5.

Step-by-step explanation: Suppose the unit price of the product is X.

T is all the money I have.

In the first option, 20 units spend all my money, so:

T = 20x

In the second option, if I buy 14 of it, I have a remaining of R$30, so:

T = 14.x + 30

To determine the unit valor:

20x = 14x + 30

20x - 14x = 30

x = $\frac{30}{6}$

x = 5

The product costs R$5.

7 0

3 years ago

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