Answer:
3) 5/2
Step-by-step explanation:
2y = 5x + 4
y = 5/2x + 2
slope = 5/2
(y = mx + b, m being slope, b being y intercept)
Answer:
The dolphin will jump 18 times in 2hours.
Step-by-step explanation:
Find the jumps per hour: 54/6 = 9
^This means that the dolphin jumps 9 times in an hour.
9*2 (hours) = 18
The dolphin will jump 18 times in two hours.
A=1/2 bh
40=1/2•20h
80=20h
4=h
You just have to make equal fractions, so if c = 4 that means 
= 
so cross multiply to get 7a = 20; divide both sides by 7 to get a = 2.86 and do the same with the other ones
If c = 11 then = 
cross multiply to get 7a = 55; divide both sides by 7 to get a = 7.86 and so on
The answer is true to the other question
Hope this helps :)
1 cm : 50 km
Multiply both sides by 7.3*
7.3 cm : 365 km
*you can do this according to the multiplication property of equality
