45/100 x 57 + 45 = $70.65
Answer:
9
Step-by-step explanation:
- [X-2]+3=10
- [X-2]=10-3
- X=7+2
- X=9
Answer:
I think the answer is.. .
Step-by-step explanation:
(b)
Answer:
∠ R = 75°
Step-by-step explanation:
you are correct with answers to a, b, c
d
the sum of the 3 angles in Δ QRS = 180° , that is
∠ Q +∠ R + ∠ S = 180° , so
55° + ∠ R + 50° = 180°
∠ R + 105° = 180° ( subtract 105° from both sides )
∠ R = 75°