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Butoxors [25]
2 years ago
7

In analyzing statistical data, which do you think is more likely: a correlation coefficient of 0.9 or a correlation coefficient

of 1.0? Explain.
Imagine that you have plotted many data points on an xy-plane. Your points seem to align into a clear best-fit line. Do you think this best-fit line can help you make predictions about future data? Explain your answer, and give one or more examples to support it.

You're studying how well students remember vocabulary after they stop studying a new language. The first student you study remembers 95% of the French words she learned 3 months later, but only 70% of the words 12 months later.

Before studying more students, you wonder: Is a decreasing linear model or an exponential decay model likely to be a better fit for data about remembering? Decide which model you think will be better. Explain your reasoning.
Mathematics
1 answer:
alex41 [277]2 years ago
4 0

Answer:

Is this middle school math I believe tha answer is 0.9

Step-by-step explanation:

I did it before pretyy sure thats what it is

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In △ABC, m∠A=16°, m∠B=49°, and a=4. Find c to the nearest tenth.
xenn [34]

Answer:

= 8.33 inches

Step-by-step Explanation

First add 49 + 16, which equals 65, and subtract that result from 180, since a triangle equals 180 degrees and you find out angle C is equal to 115 degrees.

Now using the formula sinA/a = sinB/b = sinC/c, plug in values and you'd get the equation sin49 x 10/sin115. After solving the equation you'd get about  8.32729886047258 inches.

= 8.33

7 0
3 years ago
Read 2 more answers
A school has 600 students. If 5%<br> are absent, how many students are<br> absent?
qwelly [4]

Answer:

30 students are absent.

Step-by-step explanation:

5%=0.05

0.05*600=30

8 0
3 years ago
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In the right triangle shown, A= 30° and AB = 8.
zloy xaker [14]

Answer:

BC=4\ units

Step-by-step explanation:

The picture of the question in the attached figure

we know that

sin(30^o)=\frac{BC}{AB} ----> by SOH (opposite side divided by the hypotenuse)

we have

AB=8\ units\\\\sin(30^o)=\frac{1}{2}

solve for BC

BC=sin(30^o)(AB)

substitute the values

BC=(\frac{1}{2})(8)

BC=4\ units

4 0
3 years ago
(2a^3 b^4) ^4= <br> What is the answer to this problem ?
Jet001 [13]

Answer: 16a^12 b^16

Step-by-step explanation:

Everything in the parenthesis to the 4th power.

2a^4= 16a

3*4=12

b^4*4=b^16

3 0
3 years ago
If 6x+4y=2 and 2x-7y=20 what is 8x-3y<br> ????<br> ???
Marizza181 [45]
Just add the two equations.

8x-3y=22

I hope this helps :)
4 0
3 years ago
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