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Basile [38]
3 years ago
15

How do i do this help me

Mathematics
2 answers:
Bad White [126]3 years ago
8 0
The box in the vertex mean that that angle= 90 degrees
The straight line indicates that 134+a=180
a=46
b=46=90
b=44
Anon25 [30]3 years ago
7 0
You first need to find angle A. You can do this by noticing that it is on a straight line with the angle with a measure of 134°, which means it must be 180 - 134 because there are 180° on a straight line. 180 - 134 = 46°, which is angle A

Angle B is complementary to angle A, which means they add up to 90°. This means that you can do 90 - 46 to find angle B, which is 44°.

I hope this helps!
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Answer:

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Step-by-step explanation:

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3 years ago
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Use completing the square to determine which of the following gives the solutions to 3x2 - 24x + 40 = 28.
jeka94

Answer:

x=4+2\sqrt{3}

x=4-2\sqrt{3}

Step-by-step explanation:

<u>Completing the square</u>

when  ax^2+bx+c=0

Given equation:

3x^2-24x+40=28

Subtract 40 from both sides:

\implies 3x^2-24x=-12

Divide both sides by 3:

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(\frac{b}{2})^2=(\frac{-8}{2})^2=16

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Factor the left side and simplify the right side:

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Square root both sides:

\implies x-4=\pm\sqrt{12}

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\implies x=4\pm\sqrt{4 \cdot 3}

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2 years ago
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4 0
3 years ago
The number of phone calls between two​ cities, N, during a given time period varies directly as the populations p 1 and p 2 of t
kherson [118]

Answer:

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Step-by-step explanation:

Given that,

The number of phone calls between two cities (N )

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N=k.\frac{p_1p_2}{d}

Given that,

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