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sertanlavr [38]
3 years ago
7

Please help me find the answer

Mathematics
1 answer:
Doss [256]3 years ago
7 0

Answer: x=2

Step-by-step explanation:

What you do is you plug the y equation on top and you substitute it in for the y on the equation below. You have -3x=-2(-5x+8)-10

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The price of a sweater was reduced from $20 to $12.By what percentage was the price of the sweater reduced?
Katen [24]

The price of the sweater was reduced by 40%

Step-by-step explanation:

Step 1; Cost before reduction was $20. The cost after reduction was 12$. Cost reduced= cost before reduction - cost after reduction

Cost reduced= $20 - $12 = $8

Step 2; We must find how much of the cost was reduced from the initial cost i.e. how much $8 is to $20. To do this we must convert it into a percentage. We divide the $8 with the $20 to get a value. This value must be multiplied with a 100 to be converted into a percentage.

Cost by which sweater was reduced=  \frac{8}{20}* 100 = 0.4 * 100 = 40

So the price of the sweater was reduced from $20 to $8 which equates to a reduction in 40%.

3 0
3 years ago
Will give brainlst <br> Have a nice day
nirvana33 [79]

Answer and Step-by-step explanation:

The answer is 5 units, or B.

This is because the slope of the lines between A and C is 2.5, and it goes 2.5 units twice.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

6 0
3 years ago
Graph the linear equation in three plots: -x+2y=11
MariettaO [177]

Answer:

<h2>In the attachment.</h2>

Step-by-step explanation:

Convert the given equation to the form y = mx + b:

-x+2y=11          <em>add x to both sides</em>

2y=x+11          <em>divide both sides by 2</em>

y=\dfrac{1}{2}x+\dfrac{11}{2}

It's a linear function.

We need only two points to plot the graph. Select any two x values, insert into the equation and calculate y values.

for x = 1

y=\dfrac{1}{2}(1)+\dfrac{11}{2}=\dfrac{1}{2}+\dfrac{11}{2}=\dfrac{12}{2}=6\to(1,\ 6)

for x = -5

y=\dfrac{1}{2}(-5)+\dfrac{11}{2}=-\dfrac{5}{2}+\dfrac{11}{2}=\dfrac{6}{2}=3\to(-5,\ 3)

3 0
3 years ago
A visitor makes a list of 11 sights he’d like to see. He is determined to visit at least 8 of these. How many possible choices d
Cerrena [4.2K]

Using the combination formula, it is found that he has 232 choices.

The order in which the sights are seen is not important, hence the <em>combination formula </em>is used to solve this question.

<h3>What is the combination formula?</h3>

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

C_{n,x} = \frac{n!}{x!(n-x)!}

In this problem, the choices are 8, 9, 10 or 11 sights from a set of 11, hence:

T = C_{11,8} + C_{11,9} + C_{11,10} + C_{11,11} = \frac{11!}{3!8!} + \frac{11!}{2!9!} + \frac{11!}{10!1!} + \frac{11!}{0!11!} = 232

He has 232 choices.

You can learn more about the combination formula at brainly.com/question/25821700

4 0
2 years ago
Miss McGrew is making stools for her first graders to use during story time. To make the stools, she covers wooden cubes with ca
castortr0y [4]

The answer is 9600

unlike the other guy who wanted points heres you help :)

5 0
3 years ago
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