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Hitman42 [59]
3 years ago
9

Someone pls help me with this.

Mathematics
2 answers:
Assoli18 [71]3 years ago
4 0

Answer: m∠D = 65°

Step-by-step explanation:

The best solve method for problems like this is say the sum of the angle values equals 360.

2x-15+2x-15+x+x = 360

Then from here you just simplify.

4x+2x-30 = 360

6x = 390

x = 65

So the measure of Angle D equals 65 degrees.

Zigmanuir [339]3 years ago
3 0

We know, sum of all angles of a quadrilateral is 360°.

Therefore, angle A + angle B + angle C + angle D = 360°

or, (2x-15)+x+(2x-15)+x = 360

or, 6x-30 = 360

or, 6x = 360+30

or, 6x = 390

or, x = 390/6 = 65

Therefore, measure of angle D = x° = 65°

The answer is option d. 65°

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When reflected over the y-axis, their x values will change sign

S(5;3) Q(2;2) R(3;-2) T(6;-1)

Translate 3 units to the right, their x values will increase by 3

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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We get a system of equations:

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We insert the solution into one of the initial equations of our system of equations

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8 0
3 years ago
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For this case we have to:

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a = 1\\b = 14\\c = 113

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x = \frac {-14 \pm \sqrt {(14) ^ 2-4 (1) (113)}} {2 (1)}

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