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2 years ago

Application of percentages

Mathematics

1 answer:

musickatia [10]2 years ago

4 0

Answer:

600

Step-by-step explanation:

convert 25% to a a decimal then divide 150 by .25

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A cone with height h and radius r has volume V = 13πr^2h. If the cone has a height of 6 in. and volume V = 8πx^2 + 24πx + 18π, w

torisob [31]

ANSWER

$r = x - \frac{3}{2}$

EXPLANATION

The volume of the cone is

$V=8\pi \: {x}^{2} + 24\pi \: x + 18\pi$

The height of the is 6 inches.

We put the values into the volume of cone to get.

$8\pi \: {x}^{2} + 24\pi \: x + 18\pi = \frac{1}{3} \times \pi \: {r}^{2} \times 6$

$8\pi \: {x}^{2} + 24\pi \: x + 18\pi = 2 \pi \: {r}^{2}$

Divide through by 2π.

$4 {x}^{2} + 12x + 9 = {r}^{2}$

The expression on the LHS is a perfect square trinomial.

$( {x - \frac{3}{2} })^{2} = {r}^{2}$

$r = x - \frac{3}{2}$

5 0

4 years ago

Read 2 more answers

find the perimeter of the quadrilateral, 31 + (4x^2+8x) + (3x^2-5x+20) + (7x+30). if x=2, what is the perimeter

Westkost [7]

31 + (4*2^2 + 8*2) + (3*2^2 + 5*2 + 20) + (7*2 + 30) = 129

4 0

3 years ago

Problem 3

Murljashka [212]

Answer:

$-\frac{2}{5}$

Step-by-step explanation:

Given expression:

2x + 5y = -10

The equation of a straight line is;

y = mx + c

y and x are the coordinates

m is the slope

c is the intercept

Now;

let us write the given expression in slope intercept format;

2x + 5y = -10

5y = -2x - 10

y = $-\frac{2x}{5}$ - 2

So, the slope of the line is $-\frac{2}{5}$

8 0

3 years ago

Last one help please????????

guajiro [1.7K]

Answer:

The answer would be 23.

Step-by-step explanation:

All numbers with only two factors are prime numbers.

23 is the only prime number.

3 0

3 years ago

Read 2 more answers

What is the value of the expression 4/2^-2?<br> a. ½<br> b. 1<br> c. 8<br> d. 16

Alexus [3.1K]

$2^{-2} = \frac{1}{2^{2} } = \frac{1}{4}$

$\frac{4}{2^{-2} } = \frac{4}{ \frac{1}{4} } = 4$ ÷ $\frac{1}{4} = 4*4= 16$

The answer is D. 16

8 0

3 years ago