Answer:
18
Step-by-step explanation:
25 + 47 = 72
72 ÷ 4 = 18
Answer:
If y varies inversely as x, then we write it as:
y = k/x
where k is some constant.
If we multiply both sides of this equation by x we get an equation for k:
k = x*y
We are given that y=4 when x=7, therefore:
k = 7*4 = 28
Put this back into our original equation to get:
y = 28/x
Answer:
Step-by-step explanation:
- 10560 feet ⇒ 2 miles
- 10560/2 feet ⇒ 2/2 miles Divide both by 2 to find the unit ratio
- 5280 feet ⇒ 1 mile
- 5280*3 feet ⇒ 1*3 miles Triple both to find required number
- 15840 feet ⇒ 3 miles
Answer:
Step-by-step explanation:
<u>Ball dropped and we start count from that moment:</u>
- 160 ft down
- 80 ft up and down
- 40 ft up and down
- 20 ft up and down, end
<u>Total distance:</u>
- 160 + 80*2 + 40*2 + 20*2 = 440 ft
