Which expression represents the sum of 8 and twice a number?

1 answer:

8 0

All of these answers are wrong? The sum of 8 and twice a number would be 8 + 2n. If it was twice the sum of 8 and a number it would be D. None of them are correct but D is technicllay the closest?

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Daniel worked for 213 hours and earned $18.20.

OleMash [197]

Answer:

2 1/3hrs→ $18.20

1 hr→ $7.80

5 1/4hrs→ $7.80x5 1/4= $40.95

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A rubber ball has a radius of about 2.86 in. Can the ball be packaged in a box shaped like a cube with a volume of 125 in3?

Vlada [557]

Answer:

I am not sure what the values needed to add in / etc, but here is the height of the box: 5

Step-by-step explanation:

A cube is a kind of rectangle where all the sides are the same. So to find volume, cube the length of any side. To find height, calculate the cube root of a cube's volume. For this example, the cube has a volume of 125. The cube root of 125 is 5. The height of the cube is 5.

(hopefully this is correct, have a nice day!)

6 0

3 years ago

F 9 is added to twice a number and this sum is multiplied by 4, the result is the same as if the number is multiplied by 4 and

riadik2000 [5.3K]

Let
x---------> the number

we know that
[9+2x]*4=4x+12
36+8x=4x+12
8x-4x=12-36
4x=-24
x=-24/4
x=-6

the answer is
-6

8 0

3 years ago

(6 x 9 = f) f x 16 = b <br><br> what dose b equal

Tcecarenko [31]

Step-by-step explanation:

f=6×9