Given that x2 + y2 + z2 = 194, calculate z if x = 7…

Given that x2 + y2 + z2 = 194, calculate z if x = 7 and (sqrt{y}) = 3
  • A.
    (sqrt{10})
  • B.
    8
  • C.
    12.2
  • D.
    13.4
Correct Answer: Option B
Explanation

Given that x2 + y2 + z2 = 194, calculate z if x = 7 and (sqrt{y}) = 3
x = 7
∴ x2 = 49
(sqrt{y}) = 3
∴ y2 = 81 = x2 + y2 + z2 = 194
49 + 81 + z2 = 194
130 + z2 = 194
z2 = 194 – 130
= 64
z = (sqrt{64})
= 8

You May Also Like

If an equilibrium reaction has ∆H If an equilibrium reaction has ∆H A. low temperatures B. high temperatures C. all temperatures D. all pressures Correct Answer: Option A Explanation `, props: [‘comment’], data() { return {} }, methods: {} }) {{ reply.posted_by.display_name }}:   {{ reply.created_at }} `, props: [‘comment’, ‘reply’, ‘rate_selection’, ‘token’], data() { return {} }, methods: {} })

If an equilibrium reaction has ∆H A. low temperatures B. high temperatures C. all temperatures D. all pressures…
Read More