5a-2a=7+2+5
a(5-2)=14
a=14/5-2
a=14/4
a=3.5
<h3>
Answer: 112 square cm</h3>
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Work Shown:
area = base*height
area = 16*7
area = 112 square cm
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Extra info (optional section):
The area formula for a parallelogram is the same as the formula for a rectangle. Imagine tilting a rectangle so that it's slanted. The area has not changed.
Or another thing to imagine is that let's say we had a stack of 2 by 4s. If the stack is perfectly vertical, aka forming a rectangle, then we can nudge the beams so that we can form a slanted parallelogram instead. Both configurations involve the same amount of wood, and therefore would lead to the same frontal surface area.
The answer to the first one is 72.
Answer: 192 books
Step-by-step explanation:
2/3 + 1/4 = 11/12
16 remaining books = 1/12
16 x 11 = 176
176 + 16=192
The first step I would take is
.. Multiply both sides of the equation by 1/4.
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You could start by adding 16 to both sides of the equation, to make the left side the square (2x +4)^2.
