Answer:
2 should be the correct one.
Answer:
15 boys dont finish
Step-by-step explanation:
48+a=63
a=15
The equation is y=2.5x.
Let the y axes increase by 2.5 and the x axes by ones
Hi,
Solving:

Answer: y = -128
Hope this helps.
If you have any questions about the answer, comment below and I'll reply.
r3t40
We know that two complements add up to 90.
Let's call the smaller angle x and the larger y.
3x = y
x + y = 90
We can use simple substitution.
x + 3x = 90
4x = 90
x = 22.5
Then, since we know that 3x=y, we can find the larger angle.
3*22.5 = 67.5