3 years ago

If m∠PQR=(12x−2)∘, and mPR=(20x−10)∘, what is m∠PQR?a. 137.5b. 70c. 16d. 81

Mathematics

1 answer:

astraxan [27]3 years ago

3 0

Answer:

Step-by-step explanation:

12x - 2 + 20x - 10 = 180

32x - 12 = 180

32x = 192

x = 6

12*6 - 2

72 - 2 = 70

the solution is b

You might be interested in

The answer for this question

Savatey [412]

I hope this helps you

8 0

2 years ago

(5/6)^4x=(36/25)^9-x, please help solve for x, and the 9-x is all superscript

stiks02 [169]

$\frac{36}{25}=\frac{6^2}{5^2}=\left(\frac{6}{5}\right)^2=\left(\frac{5}{6}\right)^{-2}\\\\therefore:\\\\\left(\frac{5}{6}\right)^{4x}=\left[\left(\frac{5}{6}\right)^{-2}\right]^{9-x}\\\\\left(\frac{5}{6}\right)^{4x}=\left(\frac{5}{6}\right)^{-2(9-x)}\iff4x=-2(9-x)\\\\4x=-2\cdot9-2\cdot(-x)\\\\4x=-18+2x\ \ \ \ \ |subtract\ 2x\ from\ both\ sides\\\\2x=-18\ \ \ \ \ \ |divide\ both\ sides\ by\ 2\\\\\boxed{x=-9}$

$Use:\\a^{-n}=\left(\frac{1}{a}\right)^n\\\\\left(a^n\right)^m=a^{n\cdot m}\\\\\left(\frac{a}{b} \right)^n=\frac{a^n}{b^n}$

6 0

2 years ago

Read 2 more answers

Which equation can be used to determine the distance between the origin and (–2, –4)?

Andreyy89

-2+(-4) i think :)))

3 0

3 years ago

Read 2 more answers

Solve for the variable x<br><br> m = -12g + x

mario62 [17]

Answer: