Answer
87 measures an acute angle
Step-by-step explanation:
Answer:
D. 3 1/2
Sum means addition (+)
Sum of a number, x and 1/2=4
This means the addition of the two numbers
x+1/2=4
Make x the subject of formula
x=4-1/2
Finding the L.C.M
= 8-1/2
x=7/2
x=3 1/2
The answer is is the picture..
