Answer:
2 hours for the 2 pipes
Step-by-step explanation:
1 pipe for a tank is 4 hours, but since 2 pipes is 2 hours less, it would take the two pipes together 2 hours
Answer:
280
Step-by-step explanation:
D = kt
105 = 3k
k = 35
D = 35t
D = 35(8) = 280
Answer:
D
Step-by-step explanation:

Simplify:

Rewrite in the form
:

Add
to both sides:



or 
x = -4±
x= -4±
Answer:
16 degrees
Step-by-step explanation:
Divide ABD by 4 to produce a 1:3 ratio of the angles
Answer:
A exterior angle of a polygon is an angle outside the polygon formed by one of its sides and the extension of an adjacent side.