3² + 7 - y² - 5 - 2y² -1
= -3y² + 9 + 1 = -3y² + 10
Answer:
$81.55
Step-by-step explanation:
$15+15%=15x1.15=$17.25
$23+10%=23x1.1=$27.50
$32+15%=32x1.15=$36.80
Total=$81.55
(Time to find a cheaper shop)
Answer:
77% is greater than 3/5
3/5 = 0.60
Which as a percent is 60 % after moving the decimal to the right two places (multiply by 100)
For a, the answer is 2. for b, the answer is 12
Answer:
∠a = 45°
Step-by-step explanation:
We are told that △abc and △xyz are congruent.
Thus;
∠a = ∠x
∠b = ∠y
∠c = ∠z
We are given;
∠y = 90°
Thus, ∠b = 90°
Now,we are told that ∠a is one half the size of ∠b.
Thus; ∠a = ½ × ∠b
∠a = ½ × 90
∠a = 45°