All categories

3 years ago

Use algebra tiles to model the expression, and then combine like terms. Check all that apply.

Mathematics

2 answers:

Lady_Fox [76]3 years ago

7 0

Answer:

1 and 3

Step-by-step explanation:

option 4 isn’t correct because you can’t combine 5 and 2x. You could if the 5 had an x too

the last one isn’t correct because you aren’t substituting anything

the second isn’t correct because you aren’t combining them all together. You are only combining the ones that are like-terms

Fynjy0 [20]3 years ago

4 0

Answer:

The equivalent expressions is 5+2x

Combine the x tiles and the integer tiles.

Step-by-step explanation:

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Add the expression (algebra)

vodka [1.7K]

Step-by-step explanation:

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6 0

3 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

(2a)3 = _____<br><br> This expression without exponents is?

Natalka [10]

<span>(2a)^3 =8a^3

hope it helps</span>

4 0

3 years ago

Read 2 more answers

A chemist is using

Alexandra [31]

The milliliters of acid in the solution is 74.1 milliliters

<h3>How to determine the milliliters of acid in the solution?</h3>

The given parameters are:

Volume of the solution = 388 milliliters

Proportion of acid in the solution = 19.1%

The milliliters of acid in the solution is then calculated as:

Milliliters = Volume of the solution * Proportion of acid in the solution

Substitute the known values in the above equation

Milliliters = 388 milliliters * 19.1%

Evaluate the product

Milliliters = 74.1 milliliters

Hence, the milliliters of acid in the solution is 74.1 milliliters