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3 years ago

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Louis is playing a video game. He begins with an initial score of 300 points but loses 120 points throughout the game. He repres

ents his score using the expression shown. 300 – 120 Write the expression as an addition expression.

1 answer:

elixir [45]3 years ago

3 0

Answer:

300 + (-)120

Step-by-step explanation:

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What is the product

djverab [1.8K]

Answer:

The product of given matrix is $AB=\begin{pmatrix}7\\ 4\\ 2\end{pmatrix}$

Step-by-step explanation:

Given : Two matrix

$A=\begin{pmatrix}3&6&1\\ 2&4&0\\ 0&6&2\end{pmatrix}$

and $B=\begin{pmatrix}2\\ \:0\\ \:1\end{pmatrix}$

We have to find the product of given matrix

$AB=\begin{pmatrix}3&6&1\\ 2&4&0\\ 0&6&2\end{pmatrix}\begin{pmatrix}2\\ 0\\ 1\end{pmatrix}$

Multiply the rows of first matrix by the columns of second matrix , we have,

$\begin{pmatrix}3&6&1\end{pmatrix}\begin{pmatrix}2\\ 0\\ 1\end{pmatrix}=3\cdot \:2+6\cdot \:0+1\cdot \:1$

$\begin{pmatrix}2&4&0\end{pmatrix}\begin{pmatrix}2\\ 0\\ 1\end{pmatrix}=2\cdot \:2+4\cdot \:0+0\cdot \:1$

$\begin{pmatrix}0&6&2\end{pmatrix}\begin{pmatrix}2\\ 0\\ 1\end{pmatrix}=0\cdot \:2+6\cdot \:0+2\cdot \:1$

$=\begin{pmatrix}3\cdot \:2+6\cdot \:0+1\cdot \:1\\ 2\cdot \:2+4\cdot \:0+0\cdot \:1\\ 0\cdot \:2+6\cdot \:0+2\cdot \:1\end{pmatrix}$

On , simplifying , we get,

$AB=\begin{pmatrix}7\\ 4\\ 2\end{pmatrix}$

Thus, the product of given matrix is $AB=\begin{pmatrix}7\\ 4\\ 2\end{pmatrix}$

4 0

3 years ago

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I just started learning about rate and I am stuck on a question.(A watch keeps perfect time but only has an hour hand. If the ho

8090 [49]

Answer:

36 minutes past 1, or 1:36

Step-by-step explanation:

A watch normally has an hour hand that does one revolution in 12 hours.

It takes 1 hour to go from the 1 o'clock position to the 2 o'clock position.

Since 1 hour equals 60 minutes, it takes 60 minutes to go from the 1 o'clock position to the 2 o'clock position.

The hour hand is 3/5 of the way from 1 to 2, so the number of minutes past 1 o'clock is 3/5 of 60 minutes.

3/5 of 60 minutes =

= 3/5 * 60 minutes

= 3/5 * 60/1 minutes

= 180/5 minutes

= 36 minutes

The time is 36 minutes past 1, or 1:36

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3 years ago

How do you do this? I'm so confused

zepelin [54]

There are lots of videos on YouTube on how to do it I’m not completely sure so I don’t want to tell you something false

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3 years ago

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How to solve -3 1/2 + 5 4/5?

monitta

Hi. This is a bit lengthy so I am attaching an image that shows it worked out step by step. I hope it helps.

Take care,
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3 years ago

-15 + 12x = 5x + 7 -3x<br> SOLVE FOR X

Natali [406]

Answer: $x=\frac{11}{5}$

<u>Simplify both sides of the equation</u>

<u></u> $-15+12x=5x+7+-3x$ <u></u>

<u></u> $12x-15=(5x+-3x)+(7)$ (Combine Like Terms)

$12x-15=2x+7$

<u>Subtract 2x from both sides</u>

<u></u> $12x-15-2x=2x+7-2x\\10x-15=7$ <u></u>

<u></u>

<u>Divide both sides by 10</u>

<u></u> $\frac{10x}{10} =\frac{22}{10}$ <u></u>

<u></u> $x=\frac{11}{5}$ <u></u>

<u></u>

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3 years ago

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