pleasehelpimdumbbb pleasehelpimdumbbb

03-06-2020
Mathematics

contestada

A triangle has 3 angles. One of the angles is 40 degrees. Another angle is 60 degrees. The last one has a label of 2n - 10. What would "n" have to be?
A. 25
B. 35
C. 45
D. 55

Respuesta :

03-06-2020

Answer:

C

Step-by-step explanation:

The sum of the angles on a triangle must always equal 180 degrees. That means...

40 + 60 + (2n - 10) = 180

100 - 10 + 2n = 180

90 + 2n = 180

90 - 90 + 2n = 180 - 90

2n = 90

n = 45

I hope this helps!

Answer Link

Otras preguntas

Find the prime factorization of the following number write any repeated racists using exponents

Reflect the figure over the line y = x + 2.

Three vertices of a parallelogram are (2,9), (2,3), and (3,0). Graph the next plot to make a parallelogram.

A laboratory tested 82 chicken eggs and found that the mean amount of cholesterol was 228 milligrams with sigma equals 19.0 milligrams. Construct a 95% confiden

What is the overall goal of cellular respiration?

Write a linear equation with the given information.Passing through (32, -11) and parallel toY=-1/4x+2

they want me to find the rate of change for 5. I already did it for 2.

Where is the graph decreasing (give the in the interval of decrease) ?

find the polynomial. write each factor as a polynomial in descending order 5x+25

the table shows the scores of 20 people who took the paramedics licensing test. Find the mean and the standard deviation of the data. the deviation answer needs