The formula to find the volume multiplies the length by the width by the height.A cube has all edges the same length .If we multiply the edges three times we get the volume of any cube.

Volume of cube with sides a is Volume V= $a^{3}$

In the question the cube is having an edge of 3.4 meters

Volume V= $3.4^{3} =(3.4)(3.4)(3.4)=39.3$

Volume of cube is 39.3 cubic meters.

4 0

3 years ago

I think of a number, add seven, then divide by five

djverab [1.8K]

Answer:

n + 7/5

Step-by-step explanation:

<u>Solve</u>

Let "n" be the varable.

Add 7 = +

Then, Divideby 5 = ÷

Therefore, the equation for this is n + 7 ÷ 5

7 0

3 years ago

Use the identity (x+y)(x2−xy+y2)=x3+y3 to find the sum of two numbers if the product of the numbers is 28, the sum of the square

fgiga [73]

Answer:

Step-by-step explanation:

1) f(x) = x+y , xy = 49 --> f(x) = x+49/x

f '(x) = 1-49/x2 , x = ±√49 , choose x = +7

y = 49/x = 7

smaller = 7

larger = 7

2) Vertical Distance is difference between the two functions

V(x) = x+56 - x2, V '(x) = 1 -2x --> x = 1/2 --> V(1/2) = 56.25 <---Max Vertical distance

Boundary at -7 and 8 are less

3) I googled the equation, it is really y(n) = kn/(49+n2)

y '(n) = (k(49+n2) - 2kn2)/(49+n2) , Setting to zero, k(49+n2) -2kn2 = 0 , n = 7

4) Let x and y be the sides of the rectangle. A = xy = 37.5 Million or y = 37.5/x

The length of the fences is f(x) = 2x + 3y = 2x+112.5/x

f '(x) = 2-112.5/x2 --> x = √56.5 = 7.5 and y = 37.5/7.5 = 5 then scale by √Million

smaller = 5000 ft and larger = 7500 ft

this took me ages to work out so hopefully it helped

4 0

3 years ago

Read 2 more answers

Fsctory can produce 12 mowers in 8. how many hours will it take to make20

lakkis [162]

It should take about 13.3 hours

6 0

3 years ago