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oksano4ka [1.4K]
2 years ago
15

50 points! The campaign manager for one of the five candidates running for office in a city wants to conduct a survey to see how

popular his candidate is among all voters in the city. He chooses the first name on a voter registration list at random then goes through the list, choosing every 15th name after that, cycling through the whole list until he ends up where he started.
What type of sampling method did the campaign manager use?
A.) Non-random sampling

B.) Simple random sampling

C.) Systematic random sampling

D.) Stratified random sampling
Mathematics
1 answer:
luda_lava [24]2 years ago
4 0

Answer:

B

Step-by-step explanation:

He chose the names on the voter registration list radomly

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Function h models an object's height in feet after x seconds have passed. Which equation shows that the object's height increase
ASHA 777 [7]

Answer:

C

Step-by-step explanation:

We know that function <em>h</em> represents an object's height in feet after <em>x</em> seconds.

In that case, option A) h(15) = 100 means that after 15 seconds, the object's height is 100 feet.

Option B) h(100) = 15 means that after 100 seconds, the object's height is 15 meters.

Therefore, neither A nor B are correct.

Option C) h(15) - h(0) = 100 means that between the zeroth and 15th second, their difference is 100 feet.

In other words, the object's height increased by 100 feet over the first 15-second period.

Option C is correct.

For Option D), it gives us the average rate of change. (h(15) - h(0)) / (15) = 100 means that for the first fifteen seconds, the height of the object increased at an average rate of 100 feet per second.

8 0
3 years ago
What is 5/4 of a right angle
natka813 [3]
A right angle is 90 degrees
So you 90/4=22.5
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Hope this helped!
6 0
3 years ago
I need help with an explanation please, thanks!!
PolarNik [594]
The answer is “C” :)
5 0
2 years ago
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Please help ! This is 7th grade math and I’ve been stuck on this question for 30 minutes!
FinnZ [79.3K]

\dfrac{1}{22}\:\dfrac{\text{in}}{\text{hr}}

Step-by-step explanation:

The amount of time from 10pm to 7am is 9 hours. However, the time indicated is 7:10am. Since there are 60 minutes in an hour, 10 min is equal to 1/6 of an hour. Therefore, the total time that the water level of the pool decreased is 9\frac{1}{6} hours or \frac{55}{6} hours. To find the rate at which the water level decreased, we divide the change in the water (in inches) by the time it took to reach that level. So we write

rate of change = \dfrac{\text{change\:in\:height}}{\text{change\:in\:time}}

\:\:\:\:\:\:\:= \dfrac{\frac{5}{12}\:\text{in}}{\frac{55}{6}\:\text{hrs}}

\:\:\:\:\:\:\:=\dfrac{5}{12}\cdot\dfrac{6}{55}\:\dfrac{\text{in}}{\text{hr}}

\:\:\:\:\:\:\:= \frac{1}{22}\:\dfrac{\text{in}}{\text{hr}}

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Three points are collinear.
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If they are in the same line yes. If they aren't then its considered non-collinear.
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3 years ago
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