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Alenkinab [10]
3 years ago
14

Help...plsssssssssssssssssssssssssssssssssssssssssssssssssssssssss

Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
3 0

Answer:

The answer is the last option: 12x - 6

Step-by-step explanation:

To find the perimeter of a rectangle we need to add the length of the four sides.

So, the sides of it are:

2 sides: 4x+ 3 an 2 sides: 2x

Then, our addition is 4x + 3 + 4x + 3 + 2x + 2x

Finally we simplify this adding like terms:  4x + 4x + 2x + 2x = 12x

                                                                       3 + 3 = 6

The answer is: 12x + 6

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rusak2 [61]
Her walking pace is:
\frac{8}{5}

Solution

\frac{2}{5}  \div  \frac{1}{4 }  \\  \frac{2}{5}  \times  \frac{4}{1}  =  \frac{8}{5}
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UkoKoshka [18]

Answer:

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Step-by-step explanation:

110+5x+2x = 180  combine like terms and move the constants to the same side

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4 0
4 years ago
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Step-by-step explanation:

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30:25

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3 years ago
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Suppose that 12 inches of wire costs 36 cents.
Karolina [17]

Answer:

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7 0
2 years ago
1) IF DE = 9, find BC
swat32

Answer:

1. BC = 18

2. m<ABC = 80°

3. x = 5

Step-by-step explanation:

1. If DE = 9, therefore:

BC = 2 \times 9 = 18 (based on the midsegment theorem, DE is half the length of the third side, BC)

2. m<ADE = 80°, then,

m<ABC = 80°

This is because m<ADC and m<ABC are corresponding angles. Corresponding angles are congruent.

3. DE = 2x + 7 , and BC = 7x - 1, find BC

Thus:

BC = 2 \times DE (midsegment theorem)

7x - 1 = 2 \times (2x + 7) (substitution)

Solve for x

7x - 1 = 4x + 14

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Divide both sides by 3

x = 5

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