Answer:
The speed of sound is 
Step-by-step explanation:
Let
x-----> the speed of sound
we know that
so
solve for x
Answer:
75%
Step-by-step explanation:
Step-by-step explanation:
let equation be y = mx + b.
m = (9-5)/(3-1) = 2
sub (1, 5):
5 = 2(1) + b
b = 3
therefore the equation: y = 2x + 3
Topic: coordinate geometry
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Answer:
81
Step-by-step explanation:
You need to work out 35% and add it to 100% to make 135%
To do that you work out 10% and multiply it by 3 to give you 30%. After that you need to work out 5% and add it to the 30%. You can work out 5 %by dividing the answer you get for 10%
100%=60 minutes
10%=6
30%=18
5%=3
35%=21
60+21=81 minutes
Step-by-step explanation:
so therefore mark jogged 2 36/70km more than his sister
