What is the volume of a right circular cone that has a height of 16 inches and a base with a circumference of 4.5 inches.

Volume= approximately 8.6

Step-by-step explanation:

V=-pir^2h/3w

V=?

r=?

h=16

c=4.5

First we have to change the circumference in radius.

r=c/(pi*2)

R=4.5/(3.14*2)=.7165605

R=.7165605 or  .72 rounded

V=3.14*.72^2*16/3 = approximately 8.6

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1