Answer: 20 seconds
Step-by-step explanation:
The distance is 540 feet
speed of the girl = 15ft/s
speed of the puppy = 12 ft/s
If we stand in the frame of reference where the girl is still, in this frame the speed of the puppy will be equal to the speed of the puppy in our previus frame plus the speed of the girl in the previous frame (because they are running in opposite directions)
S = 15 ft/s + 12ft/s = 27ft/s
Now we can use the equation:
time = distance/speed
T = 540ft/27ft/s = 20s
Three hundred fifty seven million, eight hundred ninety four thousand, five hundred seventy-six.
Answer:
1. x=2
2. x=5
3.x=10
Step-by-step explanation:
Answer:
QR = 12 (cm), RP = 10 (cm)
Step-by-step explanation:
Corresponding sides of the triangles:
XY : PQ, YZ : QR, ZX : RP.
For similar triangles ratios of corresponding sides are the same
XY : PQ = 4 : 8 = 1 : 2
YZ : QR = 1 : 2
ZX : RP = 1 : 2
YZ : QR = 1 : 2
6 : QR = 1 :2, QR = 12 (cm)
ZX : RP = 1 : 2
5 : RP = 1 : 2, RP = 10 (cm)
