No because
24.55
+ 12.25
1
24.50
+ 12.20
24.00
+ 12.00
.80
20.00
+ 10.00
6.80
The answer is 36.80 so he was 10.00 off.
Finding x for
5x + 4x + 45 = 180
1st step is to combine alike terms
9x + 45 = 180
Now subtract 45 from both sides
9x = 135
Now divide by 9
x = 15
hope this helps I found this in my notes and looked it up to see if its correct .
A) |–3| = 3 and –|–4| = –4
It’s the only one that makes sense.
Hope that helps!