Answer:
6(3t+2)
Step-by-step explanation:
Good evening ,
Answer:
∠b = 12°
Step-by-step explanation:
∠a and ∠b are complementary angles ⇔ ∠a + ∠b = 90
Then ∠a =90 - ∠b = 90 - 78 = 12°
:)
You find the rates of each computer on its own...
One does the job in 55 minutes which we can say is 1/55
The other has a rate of 1/45.
The question wants to know how long it would take both working simultaneously to complete the job...
t/55+t/45=1
(9t+11t)/495=1
20t=495
t=24.75 minutes (24:15)
e 95,970 l dont know any work just looked it up sorry