(4x² + 6) + (2x² + 6x + 3) = 4x² + 6 + 2x² + 6x + 3 = 6x² + 6x + 9
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Answer: 6x² + 6x + 9 (Answer C)
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Answer:
1/6
Step-by-step explanation:
Answer:
x = 20%
Step-by-step explanation:
The area is the product of side lengths. If the original side is "a", then the one increased by 25% is ...
a + 0.25·a = 1.25a
The one decreased by x is ...
a -x·a = a(1 -x)
We want the area of the square to be the same as that of the rectangle, so we write an equation that says that, then solve for x.
square area = rectangle area
a^2 = (1.25a)(a)(1-x)
1 = 1.25 -1.25x . . . . divide by a^2, eliminate parentheses
1.25x = 0.25 . . . . . add 1.25x -1
x = 0.25/1.25 = 0.20
x = 20% . . . . . . expressed as a percentage
Answer:
1 1/8
Step-by-step explanation:
2 1/2 - 1 3/8
Get a common denominator of 8
2 1/2 *4/4 - 13/8
2 4/8 - 1 3/8
1 1/8
Answer:
203.20 millimeters
Step-by-step explanation:
StartFraction 8 inches Over question mark millimeters EndFraction = StartFraction 40 inches Over 1,016 millimeters
8 inches / ? Millimeters = 40 inches / 1,016 millimeters
8 × 1,016 = ? × 40
8,128 = 40?
Divide both sides by 40
? = 8,128 / 40
= 203.20
? = 203.20 millimeters
There are 203.20 millimeters in 8 inches