The variable z is inversely proportional to x. when x is 16, z has the value 0.875. what is the value of z when x=21

z is inversely proportion to x

⇒ z = k/x where k is a constant.

Find k:

Whe x = 16, z = 0.875

16 = k/0.875

k = 16 x 0.875

k = 14

Therefore z = 14/x

When x = 21, find z:

z = 14/21

z = 2/3

z = 2/3 or 0.67 (nearest hundredth)

answer: 800

step-by-step explanation:

hello, sorry being so rude after all that fighting i found it kind of funny, so as me saying sorry here is an answer!

since the table showed her that   2km = 2000m.

to determine, how many km in 2000m, she would divide by 1000.

= 2000 / 1000 = 2 km.

similarly, for 8000m = 8000 / 1000 = 8 km

cheers to savings

~

your pal papaguy