Find the value of.(i) (3° + 4 -¹) × 2²

5

Step-by-step explanation:

Using the rule of exponents

= 1 and =

Given

( + ) × 2²

= (1 + ) × 4

= × 4

= 5

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours