Question 26
Algebraic ExpressionsGiven that x2 + y2 + z2 = 194, calculate z if x = 7 and √y = 3.
- A.√10
- B.8
- C.12.2
- D.13.4
Show the answer and explanation
Answer: B (8)
Explanation
√y = 3 means y = 9. Then 49 + 81 + z2 = 194, so z2 = 64 and z = 8.
Given that x2 + y2 + z2 = 194, calculate z if x = 7 and √y = 3.
Answer: B (8)
√y = 3 means y = 9. Then 49 + 81 + z2 = 194, so z2 = 64 and z = 8.