Which of the following does (squareroot t)^2 simplify to, for any nonnegative real number t?
a. t^2
b. square root t
c.1
d. t

The answer is D. t

Step-by-step explanation:

(Square root t)^2

i.e (√t)²

Since √t = t^1/2

Therefore

(√t)² = t^(1/2*2)

= t¹

= t

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°