The missing blank is 2 because 7+2=9.
Answer:
The answer is 2.
Step-by-step explanation:
2 appears three times while the others appear only twice
Answer:
1 + 5(77 - s) = 31
Step-by-step explanation:
Solve for s:

Put the value of <em>s</em> to the expression 1 + 5(77 -s):

Use 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)

The formula for the area of a trapezoid is (B+B)H/2 it is going to be (10+12)*8/2=58
the area of the trapezoid is 58<span />