This question needs to be answered, been stuck on this for 20 minutes.

2nd

Step-by-step explanation:

multiple then divide?

Answer

B) 287.6cm²

Step-by-step explanation:

First you need the radius, since you have the diameter you have to divide it by 2 in order to get the radius (8.4 divided by 2 = 4.2) then use the formula A=2πrh and plug in the radius and your height (h) which is 10.9cm into the formula.

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: