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3 years ago

Need answer right now!!

Mathematics

1 answer:

dsp733 years ago

6 0

Answer:

Step-by-step explanation:

All you do is find an exponent that adds up to 24

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Which fractions are equal to −9/36?

STatiana [176]

Answer:

1/4

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Find the slope of the line that passes through (2, 12) and (6, 7).

Elodia [21]

Answer:

m= $\frac{1}{4}$

Step-by-step explanation:

Gladly!

To find the slope, we need to find the change between <em>point a</em> and <em>point b</em>

With the difference between x1 and x2 being 4, and the difference between y1 and y2 being 1, we get a fraction that looks like this,

$\frac{1}{4}$

This right here is the slope of the line. Hope this helps!

8 0

3 years ago

Can you turn this sentence into an equation please? Three times twenty one more than a number is twelve. What is that number?

Zanzabum

X + 3 * 21 = 12
x + 63 = 12
x = 12-63
x = -51
The wording was a little odd, but I hope this is what you’re looking for!

3 0

4 years ago

Read 2 more answers

Triangle A, B, C, is shown. Angle C, A, B is 70 degrees. Angle A, B, C is 70 degrees.

Xelga [282]

Answer:

40°

Step-by-step explanation:

<CAB=70°

<ABC=70°

<ACB+ <CAB+ <ABC=180(sum of angles in a triangle)

<ACB +70+70=180

<ACB+140=180

<ACB=180-140

<ACB=40°

5 0

3 years ago

The value of the coefficient of correlation ( r) a. can never be equal to the value of the coefficient of determination (r2). b.

gulaghasi [49]

Answer:

d. can be equal to the value of the coefficient of determination (r2).

True on the special case when r =1 we have that $r^2 = 1$

Step-by-step explanation:

We need to remember that the correlation coefficient is a measure to analyze the goodness of fit for a model and is given by:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

The determination coefficient is given by $R= r^2$

Let's analyze one by one the possible options:

a. can never be equal to the value of the coefficient of determination (r2).

False if r = 1 then $r^2 = 1$

b. is always larger than the value of the coefficient of determination (r2).

False not always if r= 1 we have that $r^2 =1$ and we don't satisfy the condition

c. is always smaller than the value of the coefficient of determination (r2).

False again if r =1 then we have $r^2 = 1$ and we don't satisfy the condition

d. can be equal to the value of the coefficient of determination (r2).

True on the special case when r =1 we have that $r^2 = 1$

7 0

3 years ago