A triangle has one angle that measures 34 degrees, one angle that measures 47 degrees, and one angle that measures 99 degrees. What kind of triangle is it?
A.
equilateral triangle
B.
scalene triangle
C.
right triangle
D.
isosceles triangle

Scalene

Step-by-step explanation:

None of the angles equals the other so no isosceles or equilateral and a right triangle had a right angle and all right angles equal 90 degrees.

a)b=4

b)x=-9

c)r=6

Step-by-step explanation:

Question 2.

a)5b+6=26

5b=26-6

5b=20

b=4

b)6-x=15

-x=15-6

-x=9

x=-9

c)r/2+2=5

r/2=5-2

r/2=3

Multiply both sides by 2 to remain with r

r/2×2=3×2

r=6.