If 30 feet of a fencing material weighs 21 pounds, what does 75 feet of the same material weigh?

52.5 lbs

Step-by-step explanation:

We can use a ratio to solve

30 ft              75 ft

=

21 lbs              x lbs

Using cross products

30x = 75*21

30x = 1575

Divide each side by 30

30x/30 =1575/30

x =52.5 lbs

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)