What will be the result of substituting 2 for x in both expressions below? One-half x + 4 x + 6 minus one-half x minus 2

Mathematics

2 answers:

Monica [59]3 years ago

5 0

Answer:

Step-by-step explanation:

The equation is:

1/2x+4x+6-1/2x-2

Ok so you can cancel out 1/2x and 1/2x because 1/2x-1/2x=0

You are left with:

4x+4

If you plug in 2 for x

4(2)+4=12

I hope this helps :)

Galina-37 [17]3 years ago

3 0

Answer:

Both expressions equal 5 when substituting 2 for x because the expressions are equivalent.

Explanation:

2 + 6 - 1/2 * 2- 2=5

and

1/2 * 2 + 4 =5

so both equals 5 :D

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Phoenix [80]

Answer

a. The volume is multiplied by 4

b. The volume is doubled

Explanation

a. The volume of a cone with radius r and height h is $\pi r^2 h/3$ . If the radius is doubled, the new volume will be $\pi (2r)^2h/3$ , which is equal to $4\pi r^2h/3$ . This means that the volume is multiplied by 4.

b. The volume of a cone with radius r and height h is $\pi r^2 h/3$ . If the height is doubled, the new volume will be $\pi r^2(2h)/3$ , which is equal to $2\pi r^2 h/3$ . This means that the volume is multiplied by 2.