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

Why did Andrew Jackson choose a new running mate in the 1832 presidential election?

Find the value of 24/m when m= -8

How can a beach and sea resource bring wealth to a citizen of a country

How to measure a diagonal of the earth?

Which vocal textures were preferred during the Baroque period?

Which of the following is a common myth associated with fitness? a. Physically active people can continue to gain muscle and lower body fat even as they age. b

PLEASE ANSWER ASAP! CORRECT ANSWER RECEIVES THE BRAINLIEST & THE POINTS! In the Odyssey, which best describes Telemachus? A. He is a proud, cruel enemy.

. The amounts of mood-elevating chemicals in the brain are A. higher in sedentary people than in those who are physically active. B. lower in sedentary

The Suns ultraviolent Rays can cause skin damage including sunburn and even skin

According to the _____ theory, dreaming is a by-product of our brain processing what it has learned during the day.