The last one is not scientific notation because the 25.67 is greater than 10
Actually those 4 angles are equal to 110 because those are vertical angles
Answer:Let's solve for a.
d=
4
5
a+h
Step 1: Flip the equation.
4
5
a+h=d
Step 2: Add -h to both sides.
4
5
a+h+−h=d+−h
4
5
a=d−h
Step 3: Divide both sides by 4/5.
4
5
a
4
5
=
d−h
4
5
a=
5d−5h
4
Answer:
a=
5d−5h
4
Step-by-step explanation:
Answer:
40 hours will it take for the pool to fill.
Step-by-step explanation:
A pump can fill a swimming pool in 8 hours.
Work done by pump to fill in 1 hour is 
The pool also has a drain that can empty the pool in 10 hours.
Work done by pump to drain in 1 hour is 
If someone turns on the pump to fill the pool, but forgets to shut the drain.
Work done by both pipe in 1 hour is




Both pipe filled
part of pool in hours = 1
Both pipe filled complete pool in hours = 
Therefore, 40 hours will it take for the pool to fill.