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lyudmila [28]
3 years ago
5

Plisss help me in thiss

Mathematics
2 answers:
ahrayia [7]3 years ago
3 0

Answer:

x=80

Step-by-step explanation:

The angle of a line is 180*.

The equation would be (x+20)+x=180

Subtract 20 from both sides: 2x=160

Divide by 2: x=80

That's your answer!

I hope this helps!

alina1380 [7]3 years ago
3 0

Answer:

x=80

Step-by-step explanation:

I cant explain well but edge 2021 never lie's!

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A=1/2h(B+b); A=15, B=4,b=1
suter [353]

step by step

A=1/2h(B+b)

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Solve this problem in your notebook using all four steps. Harvey is 3 times as old as Jane. The sum of their ages is 48 years. F
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Answer:

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Step-by-step explanation:


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3 years ago
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12!!!! Hope this helped and good encouragement
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2 years ago
Given equation x = 6 + i, w = -1 + 5i and z = 4 - 8i, determine each of the following in the form of a + bi
Temka [501]

Answer:

i) 28 - 30i

ii) 36 + 28i

Step-by-step explanation:

i) x = 6 + i ⇒2x = 2(6 + i) = 12 + 2i

z = 4 - 8i ⇒ 4z = 4(4 - 8i) = 16 - 32i

2x + 4z = (12 + 2i) + (16 - 32i) = 28 - 30i

ii) w = -1 + 5i and z = 4 - 8i

w × z = (-1 + 5i)(4 - 8i) = -4 + 8i + 20i - 40i^{2}⇒collect like terms

w × z = -4 + 28i - 40i^{2}

∵ i^{2}=-1

∴w × z = -4 + 28i - 40(-1) = -4 + 28i + 40 = 36 + 28i

3 0
3 years ago
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