roxanagriffith2 roxanagriffith2

23-08-2017
Mathematics

contestada

If a triangle ABC, angle A is three times as large as angle C. The measure of angle B is 30 less than that of angle C. Find the measure of the angles

Respuesta :

twvogels twvogels

23-08-2017

[tex]180=a+b+c[/tex]
[tex]180=3c+(c-30)+c[/tex]
[tex]180=5c-30[/tex]
[tex]210=5c[/tex]
[tex]c=42[/tex]
[tex]a=3c[/tex]
[tex]a=3(42)[/tex]
[tex]a=126[/tex]
[tex]b=c-30[/tex]
[tex]b=42-30[/tex]
[tex]b=12[/tex]

Check:
126+12+42=180
180=180 ---> Checks TRUE

Answer Link

Otras preguntas

find the value of n 6/n = 5/120

is y = -x + 6 and 10y + x = -100 Parallel perpendicular or neither

What inverse operation is used to solve this equation

Which expression represents a rational number?

ASAP PLEASE!! anything helps. Which best explains how a change in the nation's demographics contributed to the rise in conservatism during the 1970s and 1980s?

Which statement about phase changes is TRUE? A. Phase changes are chemical changes. B. Phase changes can be reversed. C. Phase changes cannot be reversed. D. P

The table shows the economic impact per livestock animal in south Dakota, Why would a dairy cow bring in more income than a beef cow?

Jack took out a $10,000 loan for a car. He is borrowing money from two banks. Bank A charges an interest rate of 5%, and Bank B charges an interest rate of 6%.

Who might be the main characters in a world parents type of creation story? What is the answer

Let f(x) = x2 and g(x) = x − 3. Evaluate the expression. (f ° g)(x) A. x2 − 3 B. x2 − 6x + 9 C. 2x − 6 D. x2 + 6x + 9 Whats the answer?