Answer: 
Step-by-step explanation:

Answer:
No
Step-by-step explanation:
Let's calculate sinA and sinB.
sinA = opposite / hypotenuse = 12 / 20
sinB = opposite / hypotenuse = 16 / 20
Since 12 / 20 ≠ 16 / 20, she is incorrect.
It is true. YOU'RE WELCOME :D
Answer:
Given - Twice a no. decrease by 22 is 48
To find - The no.
Solution -
Let the no. be X
According to the question, equation made is -
2x - 22 = 48
2x = 48 + 22
2x = 70
x = 70/2
X= 35
Verification -
35 ×2 - 22 = 48
70 - 22 = 48
48= 48
LHS = RHS
hence proved
The middle is 2 :D hope this helps