Answer:
Step-by-step explanation:

Answer: the correct answer is b x=11
Step-by-step explanation:
2x - 3x + 3x = 5x + 30 + 3
2x = 5x + 33
( 2x - 5x = 5x + 33 - 5x
(1/3)-3x = 33x (1/3) Here we divide it but since it is 1/3, it is the same as dividing 3 divided by 11
1x = 11
x=11
Number is an isosceles triangle number seven is a right angle triangle number 9 I believe is a scalene triangle number 10 is a right angle triangle I also believe 11 is a scalene triangle and I believe number 8 is equilateral triangle
The answer d)
Explaining
y = -18 + 3
y= -15