Answer:
Answer: 3 1/2 as a decimal is 3.5.
Step-by-step explanation:
Answer:

Step-by-step explanation:


Used PEMDAS:
P Parentheses first
E Exponents (ie Powers and Square Roots, etc.)
MD Multiplication and Division (left-to-right)
AS Addition and Subtraction (left-to-right)
First Power, next Addition
Answer:
21
Step-by-step explanation:
13 + 4(9-7) =
13 + 4(2) =
13 + 8 = 21
False, 4-2(3+7) = -16 and 4-2•3+2•7= 12