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

At what point does the terminal side of the angle π in standard position intersect the unit circle?

What is Mathilde most likely thinking and feeling when she hears Madame Forestier's confession? A. She probably wants Madame Forestier to reimburse her for the

What is the relationship between competition and population size?

How to tell if there is no solutions quadratic formula?

When something stands out from a background, is seen as important, or draws attention it is:?

The great person/man approach stresses that leaders' traits are learned. a. True b. False

If a developing country wishes to attract mass tourism it must:

"the sudden loss of ____ ml of blood in a child is considered life threatening"

An apprentice jeweler determines the density of a sample of pure gold to be 20.3 g/cm3. the accepted value is 19.3 g/cm3. what is the percent error of the jewel

A type of protein that allows a particular molecule or ion to freely cross the plasma membrane as it enters or exits the cell