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2 years ago

Last one for real this time! Find the perimeter and area the figure.

Mathematics

1 answer:

Natali5045456 [20]2 years ago

5 0

Answer:

Perimeter = 180

Area = 1080

Step-by-step explanation:

Perimeter is length of all sides added together. 30+78+72 = 180

Area is the length times the height/2 for a triangle. 30*72/2 = 1080

I hope this helped <3

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Degger [83]

Step-by-step explanation:

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3 years ago

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marishachu [46]

Answer:

Step-by-step explanation:

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3 years ago

Please help me solve this problem

Maksim231197 [3]

Answer:

i think the answer is 58

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Step-by-step explanation:

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3 years ago

It says solve by factoring.

dsp73

Answer:

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Step-by-step explanation:

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3 years ago

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Perform the indicated operations. Write the answer in standard form, a+bi.<br> (5 + 6i)(5 - 6i)

lubasha [3.4K]

$\boxed{\underline{\bf \: ANSWER}}$

$\sf \: ( 5 + 6 i ) ( 5 - 6 i )$

Multiply complex numbers 5+6i and 5-6i in the same way as you multiply binomials.

$\dashrightarrow \sf 5\times 5+5\times \left(-6i\right)+6i\times 5+6\left(-6\right)i^{2}$

By definition, i² is -1.

$\dashrightarrow \sf 5\times 5+5\times \left(-6i\right)+6i\times 5+6\left(-6\right)\left(-1\right)$

Do the multiplications.

$\dashrightarrow \sf \: 25-30i+30i+36$

Now cancel -30i & +30i

$\dashrightarrow \sf \: 25 \: \bcancel{- 30i} \: + \: \bcancel{30i}+36$

Now the equation becomes

$\dashrightarrow \sf \: 25 \: + 36 \\ \dashrightarrow \boxed{\bf \: 61}$

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Hope it helps.

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3 years ago

Read 2 more answers