Answer:
4 right angles.
Step-by-step explanation:
1 right angle: 90 degrees
360/90= 4
It’s 10n+12
They put the 2 n’s as an exponent
|\
l \
l______\
True
10) 3/5=a/15
a=9
9) 6/100×300
18$
8) 100-57.5
=42.5percent
7) 35/100×350
.=$122.5
