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3 years ago

Can someone help me please

Mathematics

1 answer:

Trava [24]3 years ago

5 0

Answer:

5n units

Step-by-step explanation:

C=2πr =2·π·2.5

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3x to the power of two minus x Factor by gcf

algol13

Answer:

After factorizing the given expression we get the value as $x(3x-1)$ .

Step-by-step explanation:

Given:

$3x^2-x$

We need to factorize the given expression using GCF.

Solution:

$3x^2-x$

Now GCF means Greatest common factor.

From the given 2 numbers we need to find the greatest common factor.

$3\times x\times x- 1 \times x$

In the given expression GCF is 'x'.

Hence we can say that;

$x(3x-1)$

Hence After factorizing the given expression we get the value as $x(3x-1)$ .

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3 years ago

Elena makes her favorite shade of purple paint by mixing 3 cups of blue paint, 1 1/2 cups of red paint, and 1/2 of a cup of whit

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Answer: 1/3 cup

Step-by-step explanation:

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3 years ago

The options for the first blank are 45, 240, 270, and 315

Schach [20]

Answer:

The solutions are 270° and 450°.

Step-by-step explanation:

Given:

$cos\frac{x}{2} =\frac{\sqrt{2} }{2}$ .

So, the second and third quadrant angle to be calculated.

$cos\frac{x}{2}=135$

$=x=270$ °.

And, $cos\frac{x}{2}=225$

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Therefore, the solutions are 270° and 450°.

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3 years ago

What is the coefficient of determination for two variables that have perfect positive linear correlation or perfect negative lin

Aloiza [94]

Answer:

r^2 = 1

Step-by-step explanation:

The computation of the coefficient of determination for the two variables is shown below:

here the perfect positive linear correlation is r = 1

And, the negative linear correlation is r = -1

Based on this, the coefficient of determination is equivalent to the linear correlation coefficient square

$r^2 = (\pm)^2 \\\\ = 1$

This above describes that variation that lies between the variables as explained by the linear regression line

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3 years ago

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8_murik_8 [283]

Answer:

Step-by-step explanation:

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3 years ago