Solve for z.
z/12 = 4/5

z=9.6

Step-by-step explanation:

To solve, we need to isolate z

z/12=4/5

Cross multiply

5*z=12*4

5z=48

Divide by 5 on both sides

z=9.6

Another way to approach this is to multiply both sides by 12, to"reverse"the division being done to z

z/12=4/5

12(z/12)=(4/5)12

z=9.6

2.

according to newton’s cannonball model, what happens if the cannonball's velocity is enough to overpower the pull of earth’s gravitystep-by-step explanation:

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.