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Romashka-Z-Leto [24]

3 years ago

15

If Mrs. Maiers buys 24 stickers, is the cost of each sticker more then or less then 0.50

1 answer:

siniylev [52]3 years ago

5 0

0.50 24 times is the answer just multiply them

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A study among first-year students at a state university showed that in general students who skipped more classes earned lower gr

Alex Ar [27]

Answer:

The numerical value of the correlation between number of classes skipped and grade index is 0.60.

Step-by-step explanation:

In statistics R² is a measure that is used to determine the proportion of variation in the dependent variable that can be explained by the independent variable. The value of R² is compute by squaring the correlation coefficient (<em>r</em>) between the dependent and independent variable.

$R^{2}=(r)^{2}$

In this case the dependent variable is the grades and the independent variable is the number of classes skipped.

The R² between the grades and the number of classes skipped is 36% or 0.36.

Compute the value of <em>r</em> as follows:

$R^{2}=(r)^{2}\\r=\sqrt{R^{2}}\\ =\sqrt{0.36} \\=\pm0.60$

Thus, the correlation between number of classes skipped and grade index is ±0.60.

4 0

3 years ago

(9x+5h)2 2 is abve the parentheses answer is ______

KonstantinChe [14]

$(9x+5h)^2=\\
81x^2+90hx+25h^2$

6 0

3 years ago

Expand the brackets 5(2x + 3)

zimovet [89]

Answer:

10x+15

Step-by-step explanation:

5 x 2x=10x

5x3=15

5 0

3 years ago

Read 2 more answers

Which of the following can be a Pythagorean triplets?:

PolarNik [594]

<h2>Answer :-</h2>

As we know that,

Pythagoras triplet

1) a² + b² = c²

Let

$\sf \: {2}^{2} + {2}^{2} = {4}^{2}$

$\sf \: 4 + 4 = 16$

8 ≠ 16

<h3>Hence, A can't be Pythagoras triplet</h3>

2) a² + b² = c²

$\sf \:5 {}^{2} + {12}^{2} = {13}^{2}$

$\sf \: 25 + 144 = 169$

169 = 169

<h3>Therefore, B can be Pythagoras triplet</h3>

3)a² + b² = c²

$\sf {3}^{2} + {5}^{2} = {6}^{2}$

$\sf 9 + 25 = 36$

34 ≠ 36

<h3>Hence, C can't be Pythagoras triplet</h3>

4) a² + b² = c²

$\sf {5}^{2} + {4}^{2} = {7}^{2}$

$\sf \: 25 + 16 = 49$

41 ≠ 49

<h3>Hence, D can't be Pythagoras triplet</h3>

<h2 /><h2>Therefore :-</h2>

Only B can be Pythagoras triplet.

3 0

3 years ago

Simplify each fraction 20/100

Masteriza [31]

1/5 i hope it helps. We knows this because 20 times 5 is 100. 5 times 2 is 10.

8 0

3 years ago

Read 2 more answers