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lilavasa [31]
3 years ago
14

If the surface area of a cube is 150 cm2, what is the volume of the cube

Mathematics
1 answer:
Fiesta28 [93]3 years ago
6 0

Answer:

V = 125 in^3

Step-by-step explanation:

A cube has 6 sides, and the area of each is equal to the side length squared:

A = 6x^2

A is given as 150 cm^2, and so is equal to 6x^2.  Thus, x = the side length = 5 cm.

The volume of the same cube is given by V = x^3, which here is 5^3 in^3, or V = 125 in^3

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Sarah Meeham blends coffee for Tasti-Delight. She needs to prepare 160 pounds of blended coffee beans selling for $4.97 per poun
jok3333 [9.3K]
Given:
let h be the high quality bean
let c be the cheaper bean

h + c = 160
6h + 3.25c = 160*4.97
6h + 3.25c = 795.20

h = 160 - c
6(160 - c) + 3.25c = 795.20
960 - 6c + 3.25c = 795.20
-2.75c = 795.20 - 960 
-2.75c = -164.80
c = -164.80 / -2.75
c = 59.92 or 60 lbs

h = 160 - c
h = 160 - 60
h = 100 lbs

Sarah should blend 60 lbs of cheap coffee bean and 100 lbs of high quality coffee bean.
3 0
3 years ago
If a rectangle has perimeter of 70 a length of x and a width of x-9, find the value of the length of a rectangle
iren2701 [21]

Answer:

length = 22

width = 13

Step-by-step explanation:

Perimeter of a rectangle is given by the formula

P =2(l+w)

we know the length is x

width is x-9

P =70

Substituting this into the equation

70 = 2(x+x-9)

Combining like terms

70=2(2x-9)

Distributing the 2

70 = 4x-18

Adding 18 to each side

70+18 = 4x-18+18

88 = 4x

Divide by 4

88/4 = 4x/4

22= x

we know the length is x

length = 22

width is x-9

width = 22-9= 13

7 0
3 years ago
Read 2 more answers
Evaluate the expression when x=20 and y=4.
klio [65]

Answer:

Hello, your question is missing. You did not show us a picture of the problem,  you did not write it either. Please send it again.

Step-by-step explanation:

3 0
2 years ago
Solving need help in don't get it
Orlov [11]
\sqrt{3x-5}-2=0
add 2 to both sides
\sqrt{3x-5}=2
square both sides
3x-5=4
add 5 to both sides
3x=9
divide 3
x=3

a nswer is B
4 0
3 years ago
Please help, the problem is due tomorrow
Mrrafil [7]

245 should be closed

7 0
3 years ago
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