Question 1 what is −12÷2/3
question 2 what is -8/3÷7/12
question 3 divide.8.64÷(−0.27)
question 4 starting at sea level, a submarine descended at a constant rate to a depth of −3/4 mile relative to sea level in 5 minutes. what was the submarine's depth relative to sea level after the first minute?
enter your answer in a fraction in simplest form.
question 5 one cold night the temperature was 0 degrees at 8 p. m. the temperature dropped at a constant rate from 8 p. m. to midnight. at midnight the temperature was −16.8 degrees.
what was the temperature at 9 p. m.?

Step-by-step explanation:

1) −12÷2/3  = -12 * 3/2 = -6*3 = -18

2) -8/3÷7/12 = -8/3 * 12/7 = -8*12 / 3*7 = -96/21

3)8.64÷(−0.27) = 8.64/-0.27 = 8.64*100/-0.27*100 =864/-27 = - 32

4) The submarine's depth relative to sea level after the first minute = -3/4 divided by 5

= -3/4 *1/5 =-3/20 = -0.15 miles

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.