Sides AB and BC are equal, which means angle BAC and BCA have the same measure, as stated in the base angles theorem. Angle BAC is 49 degrees, so angle BCA must also be 49 degrees. The sum of all angles in a triangle is 180 degrees, so angles BAC, BCA, and CBA will add up to 180. Write this in an equation:

BAC+BCA+CBA=180

BAC and BCA both measure 49 degrees:

49+49+CBA=180

Solve for CBA

CBA=180-49-49

CBA=82

lmk if i made any errors, hope this helps :)

6 0

2 years ago

Simplify these expressions a) 5 x x b) 6 xxxy c) 2 xxx 3xy

Gennadij [26K]

5x^2
6x^3y
2x^3 3xy
^ means the little number above x eg x^3

4 0

3 years ago

Over the course of 87 days, about 200 million gallons of crude oil spilled into the Gulf of Mexico. If the oil spilled at a cons

katrin [286]

Answer:

3.19 gallons of oil lost per day

Step-by-step explanation:

7 0

3 years ago