Answer:
70 i think
Step-by-step explanation:
Answer:
Step-by-step explanation:
let the speed of one plane=x mph
speed of other plane=x+120 mph
x×1.5+(x+120)×1.5=1620
(x+x+120)×1.5=1620
(2x+120)×1.5=1620
3x+180=1620
3x=1620-180
3x=1440
x=480
speed of one plane=480 mph
speed of second plane=480+120=600 mph
The answer is B) 7, because every student has to have the same amount you just have to find the greatest common factor.<span />
√(154)
√(77 × 2)
√(77)√(2)
√(11 × 7)√(2)
√(11)√(7)√(2)
The square route of 154 is irrational.
