3x5=$15
15+10=$25 total to spend
He spends 12.75+8.5= $21.25
25-21.25=$3.75 left
Answer:
I believe your answer is commutative property
ANSWER
The correct answer is C
EXPLANATION
The given triangle is a right triangle. Since two angles are equal, it is a right isosceles triangle.
This implies that, x=8 units.
Using Pythagoras Theorem,

This implies that:


Take positive square root,


The correct answer is C
The answer to your question is 45
12/10 + 9/10 = 21/10
21/10 simplified is 2 1/10