and when they got there they all got teleported back in time 66, 000, 000 years ago to the dinosaurs
Answer:
4
Step-by-step explanation:
3r = 10 + 5s
r = 10
3(10) = 10 + 5s
30 = 10 + 5r
20 = 5r
r = 4
Answer:
1/4
Step-by-step explanation:
printed part = 210
total pages = 280
probability to open printed page 210/280 =3/4
probability to not open printed page = 1 - probability to open printed page = 1 - 3/4 = 1/4

For this to be equivalent to

, you require

and

Dividing the second equation by the first gives

Meanwhile, you also get

So,
Answer:
ture
Step-by-step explanation: