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11111nata11111 [884]
3 years ago
7

Which of these is not a possible r-value

Mathematics
2 answers:
Tresset [83]3 years ago
5 0

Answer:

1.75

I believe the correct answer is option D, a value of greater than 1 is not a possible value of r or the correlation coefficient in statistics. It is a measurement of the direction and strength of relationship between variables. Its value would only have a range of positive one to negative one.

Step-by-step explanation:

This is an answer from another brainly, the same question was asked and answered.

soldier1979 [14.2K]3 years ago
4 0

Answer:

Step-by-step explanation:

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(1+2i) (2+5i)
Lostsunrise [7]

Answer:

Step-by-step explanation:

first multiply 1 with 2+5i then multiply 2i with 2+5i and you will get

2+5i+4i+10i^2

then in the next step add 4i and 5i you will get 9i

in the next step put i^2=-1 and you will get -10

in the last step just substract 2-10 you will get -8 and 9i

and your answer will be -8+9i

5 0
3 years ago
Za and Zb are complementary angles. Za measures 28<br>What is the measure of Zb?​
trasher [3.6K]

Answer:

Zb=62

Step-by-step explanation:

Two angles are complementary when they add up to 90 degrees.

90-28=62

5 0
3 years ago
Solve for x<br> Enter the solutions from least to greatest.<br> -4x^2– 7 = -11
Pavlova-9 [17]

Answer:

x = 1, x = -1

Step-by-step explanation:

-4x² = -4

x² = 1

x = \sqrt{1}

x = ±1

3 0
3 years ago
There are two calculus classes at your school classes have a class average of 75.5 the first class as a standard deviation of 10
DENIUS [597]
To compare the two classes, the Coefficient of Variation (COV) can be used.

The formula for COV is this:
C = s / x

where s is the standard deviation and x is the mean

For the first class:
C1 = 10.2 / 75.5
C1 = 0.1351 (13.51%)

For the second class:
C2 = 22.5 / 75.5
C2 = 0.2980 (29.80%)

The COV is a test of homogeneity. Looking at the values, the first class has more students having a grade closer to the average than the second class.
8 0
3 years ago
Plz answer me will mark as brainliest and will reported if wrong answer ​
Sergeu [11.5K]

Answer:

1,2,3

18=8×1 =

Step-by-step explanation:

Plz mark as brainliest and follow me plz

6 0
3 years ago
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