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Alja [10]
3 years ago
9

Can someone help me with this?

Mathematics
1 answer:
liubo4ka [24]3 years ago
7 0

Answer:

A, B and D

Step-by-step explanation:

√5 x √5 x √4 is basically 5 x 5 x 4 = 100, but the 100 still has the root sign

The sqrt of 100 is 10, since 10 x 10 = 100

Like said on the first line, it makes √100 and this is valid since the question does not say to simplify it

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3 years ago
The perimeter of a triangle is 47 feet. One side of the triangle is one foot longer than the second side. The third side is four
Ugo [173]

Answer:

The lengths of all three sides (in feet) are = 15, 14, and 18 feet

Step-by-step explanation:

Perimeter of Triangle = 47ft

Let the one side be 'x'

<em>Side 1 = x</em>

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<em>Side 2 = x - 1</em>

<em>The third side is four feet longer than the second side</em>

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<em />

<em>Perimeter = sum of all sides</em>

<em>47 = x + (x - 1) + (x - 1) + 4</em>

<em>47 = x + x - 1 + x - 1 + 4</em>

<em>47 = 3x + 2</em>

<em>47 - 2 = 3x</em>

45 = 3x

<u>x = 15</u>

substitute for x in each of the sides

<em>Side 1 = x                   => </em><em>15 feet</em>

<em>Side 2 = x - 1              => 15 - 1 = </em><em>14 feet</em>

<em>Side 3 = (x - 1) + 4      => 14 + 4 = </em><em>18 feet</em>

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