Answer:
.9b+2
Step-by-step explanation:
You first add 3.8b and -2.9b which equals .9b
Then you add -7 and 9 which equals 2
Hope this helped!
Answer:
5 gallons/minute
Step-by-step explanation:
divide total gallons of water by total minutes. 30/6 = 5, therefore it being 5 gallons per minute.
Answer: is 75%
Step-by-step explanation:
Because you have to make sure you count each square then
Answer:
x=35
Step-by-step explanation:
cross multiply
5/4 40/x
40*4/5
=160/5
x=35
Answer: 
Step-by-step explanation:
The formula for calculating the circumference of a circle is given as :
, where r is the radius
or
, where d is the diameter
using the second formula , since we are finding the diameter.
that is
multiply through by 
we have :
rounded to 2 d.p
