Many adults complain they do not get enough sleep at night.

what happens when these adults have children?

independent random samples of 150 adults who do not have children in the house and 130 adults who do have children in the house are selected.
the average amount of sleep the adults without children had was 7.1 hours with a standard deviation of 0.7 hours.
the average amount of sleep the adults with children had was 6.5 hours with a standard deviation of 0.8 hours.
what is the estimate for the standard deviation of the sampling distribution of the difference in sample means?

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

d is the only accurate one

step-by-step explanation: