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Natasha2012 [34]

3 years ago

7

Use a number line to solve 5+7

1 answer:

Neporo4naja [7]3 years ago

6 0

To start off, 5+7=12, so we already know how the number line will be laid out. We will have Point A on 5, and count up 7 units, plotting Point B on 12.

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What is the volume of the cone?

Lady bird [3.3K]

Answer: C: 2787.64
Explanation: The height of the cone equals 22, the diameter of the circle is 22, divide it by 2 to get the radius which is 11. Then plug in data into formula: V=

Pi•radius squared• height
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3

4 0

4 years ago

Find the distance CD rounded to the nearest tenth. <br> C=(5,6) and D (2,2) <br> CD=

navik [9.2K]

Use the distance formula to find the distance between points C (5,6) and D (2,2).

d= $\sqrt{(x2-x1)^2+(y2-y1)^2}$

Plug the corresponding values in to the equation.

d= $\sqrt{(2-5)^2+(2-6)^2}$

Then simplify the rest of the equation.

d= $\sqrt{(-3)^2+(-4)^2}$

d= $\sqrt{9+16}$

d= $\sqrt{25}$

d= $5$

<u>The distance of the two points CD is 5.</u>

7 0

4 years ago

Give example of solution to solve the equation 2x-7=5+x

andrew11 [14]

Answer:

And find it all urself

Step-by-step explanation:

7 0

3 years ago

What is the value of x?<br> 72<br> 84<br> 96<br> 252<br> helpppp please

Art [367]

Its 72, which is answer A

7 0

4 years ago

Read 2 more answers

I NEED HELP PLEASE, THANKS! Use Cramer's Rule to find the solution of the system of linear equations, if a unique solution exist

iren2701 [21]

Answer:

Option B

Step-by-step explanation:

We are given the following system of equations -

$\begin{bmatrix}-5x+2y-2z=26\\ 3x+5y+z=-22\\ -3x-5y-2z=21\end{bmatrix}$

Now by Cramer's Rule, we would first write down the matrix of the coefficients , replacing each column with the answer column -

$\begin{bmatrix}-5&2&-2\\ 3&5&1\\ -3&-5&-2\end{bmatrix}$ ,

$\begin{bmatrix}26\\ -22\\ 21\end{bmatrix}$

Replace each column of the coefficients shown at the top, with the answer column at the bottom respectively -

$\begin{bmatrix}-5&2&26\\ 3&5&-22\\ -3&-5&21\end{bmatrix}$

Now solve through Cramer's Rule -

x = Dx / D = - 6,

y = Dy / D = - 1,

z = Dz / D = 1

<u><em>Solution = ( - 6, - 1, 1 ) = Option B</em></u>

8 0

4 years ago