86 and 87 utilize the Pythagorean theorem. Where those tangent lines meet the circle forms a right angle. So you have a side length of 6 and a hypotenuse of 22. So the missing side length is 21.16. For 87, its the same thing, but you have the 2 legs but are missing the hypotenuse.
Answer: 60
Step-by-step explanation: 5 was multiplied by 6 to get 30 so that means 10 has to get multiplied by 6 and it turns into 60
C. is the correct answer because (x+3)^2 is x^2+6x+9
Answer:
b+24
x-18
a/3
Step-by-step explanation: