Answer: The − sign here means subtraction. However, recall that 4 − 7 can be rewritten as 4 + (−7), since subtracting a number is the same as adding its opposite.
Step-by-step explanation:
Answer:
x + y = 20
1.5x + 5y = 54.50
Solve the equations and get: x = 13 ∧ y = 7
Marcy bought 13 books and 7 CDs.
The answer is A.
Hope that helps!
You can just use sine.
Sin(F) = opposite/hypotenuse = 28/40.
F =

(28/40)
Plug into your calculator.
44.4
Answer:
the answer is c because
Step-by-step explanation: