3 years ago

1/4 + 5/8 + 1/8 + 1/4 + 1/4 + 1/4 + 3/4 + 3/4

Mathematics

2 answers:

zysi [14]3 years ago

7 0

1/4=2/8 and 3/4=6/8... common denominator
2/8+5/8+1/8+2/8+2/8+2/8+6/8+6/8=26/8=13/4=3 1/4

Alexxandr [17]3 years ago

7 0

1/4 + 5/8 + 1/8 + 1/4 + 1/4 + 1/4 + 3/4 + 3/4 =
2/8 + 5/8 + 1/8 + 2/8 + 2/8 + 2/8 + 2/8 + 6/8 + 6/8 =
7/8 + 3/8 + 4/8 + 8/8 + 6/8 =
10/8 + 12/8 + 6/8 =
22/8 + 6/8 =
28/8
3 1/2

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For what value of x is the area of the rectangle greater than the perimeter? The base of the perimeter is x+2

TiliK225 [7]

If we call the area A, then $A=7(x+2)=7x+14$
if we call the perimeter P, then $P=7*2+2(x+2)=2x+18$
$A>P$
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subtracting 14 gives $7x>2x+4$
subtracting 2x gives $5x>4$
dividing by 5 gives $x>\frac{4}{5}$
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