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zubka84 [21]
3 years ago
8

The Nielsen Media Research Company uses people meters to record the viewing habits of about 5000 households, and today those met

ers will be used to determine the proportion of households tuned to CBS Evening News.
Mathematics
1 answer:
expeople1 [14]3 years ago
4 0

Answer:

Cross-sectional study.

Step-by-step explanation:

- In a cross-sectional study, data are observed, measured, and collected at one point in time.

- In a prospective (or longitudinal) study, data are collected in the future from

groups sharing common factors.

- In a retrospective (or case-control) study, data are collected from the past by going

back in tirme (through exanmination of records, interviews, arıd so on).

Hope this Helps!!

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EMERGENCY HELP! A steady stream of water flows into a partially-filled rectangular tank. After 6 minutes, there are 87 gallons o
german

Answer:

y=9x+33

33 gallons of water to begin with.

Step-by-step explanation:

So we essentially are given two coordinates: (6,87) and (21,222). To find an equation, we simply need to find the slope and y-intercept. We know it's a linear equation because it's a steady stream, meaning a constant slope.

The slope is:

m=\frac{y_2-y_1}{x_2-x_1}=\frac{222-87}{21-6}=135/15=9

So, the rate at which the stream flows is 9 gallons per minute.

Now, let's find the initial amount of water. To do this, we can use point-slope form. Pick either of the two points. I'm going to use (6,87).

y-y_1=m(x-x_1)\\y-87=9(x-6)\\y-87=19-54\\y=9x+33

So, there were 33 gallons of water in the tank to begin with.

3 0
3 years ago
6t - 5 + 5t = 105 (t = 4; t = 7;t = 10)
mart [117]

Answer:

t = 10

Step-by-step explanation:

6[10] - 5 + 5[10] = 105 \\  \\ 60 - 5 + 50 = 105 \\  \\ 105 = 105

I am joyous to assist you anytime.

7 0
3 years ago
wyatt swims 500 yards in 5 minutes and 15 seconds. what is his swimming speed in yards per minute to the nearest whole yard
lidiya [134]
The answer is 33 yards per minute!
6 0
3 years ago
Read 2 more answers
7(4g) + 3(5h) + 2 (-3g); g=1/2 , h= 1/3
Digiron [165]
7(4(1/2))+3(5(1/3))+2(-3(1/2))=
7(4/2)+3(5/3)+2(-3/2)=
7(2)+15/3+-6/2=
14+5-3=
19-3=
16
4 0
3 years ago
I need help on solving this math problem.​
son4ous [18]

Answer:

f(1)=-3

f(-4)=-11

f(6)=0

Step-by-step explanation:

Use the correct formula depending on what (x) equals.

When (x=1) you use the second formula because 1 is greater than -2 but less than 4

When (x=-4) you use the first formula because -4 is less than -2

When (x=6) you use the third formula because 6 is greater than 4

5 0
2 years ago
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