Answer:
1. −7
Step-by-step explanation:
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Answer: -70
Step-by-step explanation:
1. You subtract 5-7 because of PEMDAS and you get -2
2. multiply 5x7=35
3. Multiply 35x-2=-70
Parentheses/brackets
Exponents
Multiplication
Division
Addition
Subtraction
Answer:
Im not sure if i can give you the entire answers, but its quite simple. A straight line=180 degrees, so subtract 112 by 180 and you get lines 1 and 3. Line 2 is just 112 because its just "flipped", so its the same number.
Step-by-step explanation:
Answer:
8% increase
Step-by-step explanation:
The length after the increase:
30 x 1.1 = 33cm
The width after the increase:
20 x 1.05 = 21cm
New perimeter:
2(33 + 21) = 108 cm^2
Old perimeter:
2(30 + 20) = 100 cm^2
Percentage increase of area:
108 / 100 = 1.08 = 8% increase
