First add the seconds you have 45 +5+10 seconds which equals 60 seconds or 1 minutes. Now add the minutes 9 + 7 + 12 minutes = 28 minutes then add that 1 minutes that you got from the seconds 28 + 1 minute = 29 minutes 7:40 + 20 minutes = 8:00 + 9 minutes = 8:09 am. So Marsha arrived to school at 8:09 am. Comment if you have any questions.
Answer:

Step-by-step explanation:
We want to find
.
can be written as
, so we can now write our original equation as:
.
We can combine like terms: 
Hope this helps!
<span>8(j-4)=2(4j-16)
8j - 32 = 8j - 32
Since both sides are equal, there are is an infinite number of solutions.
</span>
√3=1.7
2√3=3.4
√5=2.2
The order:
√3,2√3,√5
Answer: C
4x7*2-25
4x49-25
196-25
= 171