Answers: A)116 degrees B)54 degrees C)62 degrees D)25 degrees

Mathematics

1 answer:

Nastasia [14]2 years ago

4 0

Answer:

The angle C is supplementary to the angle of 180°

180°-116°=64°

The sum of all sides of a triangle is always 180 °:

2x+4°+3x-13°+64°= 180°

5x+55°= 180°

5x=180°-55°

5x=125°

x=125°/5

x=25°

⇒A=3x-13°

A=3×25°-13°

A=75°-13°

A=62°

Answer C

hope this helps.

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Is algebra.

Ket [755]

Answer:

$6(x-10)(x+9)$

Step-by-step explanation:

First, make A equal one by factoring out the greatest common factor, 6. This makes the new expression $6(x^{2} +x-90)$ . Then, factor the remaining polynomial by finding two numbers that multiply to -90 and add to 1. These two numbers are -10 and 9. So, add each term to x and then multiply to get the final answer, $6(x-10)(x+9)$ .