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

Quien me ayuda a hacer esta operación :(, es súper urgente

Calculate the inverse of the matrix and find the values for a, b, c, and d: A=[4 12 1 10] A-^1=[a/14 b/7 c/28 d/7]

in the giver what happened when jonas looked across the crowd

Will mark brainliest.Mimi opened a savings account 6 years ago. The account earns 1% interest, compounded monthly. If the current balance is $1,000.00, how much

Which of these was the MOST annoying important results of the death of much of the Indian population in South America

which expression is equivalent 3/4(3x-5)

(next slide), Imagine that you were a germ, what would be the best way to enter the body. Create 3 solutions, for each solution list the pros and cons, then bas

Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.8 years with a standard deviation of 0.7 years

Help me plz now this is very important

"Dànyuàn" is best translated to mean what?