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weqwewe [10]
3 years ago
5

Please help me :) Thank you :)

Mathematics
1 answer:
aksik [14]3 years ago
3 0

Answer:

90 degrees :)

Step-by-step explanation:

x and 90 are supplementary.

x + 90 = 180

x = 90

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8 0
3 years ago
Over which interval does f have an average rate of change zero?
kvv77 [185]

Answer:

Step-by-step explanation:

The average rate of change is the slope. Slope has a formula that is the change in y over the change in x, which is a fraction. The only time a fraction can have a vlue of 0 is where the numerator of the fraction is equal to 0 (since we are not allowed to have a denominator of 0). If the change in y is in the top of the slope fraction, then we have to find the interval where the y values are the same. I'll show you one where the y values are not the same so you can compare it to the slope where the y values are the same. We will find the slope of choice A.

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m=\frac{4-0}{5-(-3)}=\frac{4}{8}=\frac{1}{2}  and the top of the fraction is a 1, not a 0, so the average rate of change between these 2 points is 1/2, not 0. Now let's do D.

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5 0
3 years ago
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These are generally preferred by researchers because they are easy to implement and understand. The important assumption that the results represent the majority of the normal population ensures that the entire population is sampled equally. The process also provides a higher level of control for systematic sampling compared to other sampling methods. systematic sampling also has a lower risk factor because the data is unlikely to be contaminated.

Learn more about systematic random sampling here:brainly.com/question/21100042

#SPJ4

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2 years ago
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Ainat [17]

Answer:

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