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Varvara68 [4.7K]
3 years ago
9

Which must be true ?

Mathematics
1 answer:
Drupady [299]3 years ago
8 0

Letter C is correct

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What is the solution of the system. Use the elimination method. 2x + y = 20 6x - 5 = 12 Enter your answer in the boxes.
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Step-by-step explanation:


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3 years ago
Jessica and Riley are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping
bixtya [17]

Answer:

Cost of one roll of plain wrapping: \$5

Cost of one roll of holiday wrapping paper:  \$19

Step-by-step explanation:

Let be "p" the cost in dollars of one roll of plain wrapping paper and "h" the cost in dollars of one roll of holiday wrapping paper.

Based on the information given, we can set up this system of equations:

\left \{ {{5p+13h=272} \atop {11p+16h=359}} \right.

In order to solve it, we can use the Substitution method. The steps are:

1. Solve for "p" from the first equation:

5p+13h=272\\\\5p=272-13h\\\\p=\frac{272-13h}{5}

2. Substitute the above into the second equation and solve for "h":

11(\frac{272-13h}{5})+16h=359\\\\598.4-28.6h+16h=359\\\\-12.6h=359-598.4\\\\h=\frac{-239.4}{-12.6}\\\\h=19

3. Substitute the value of "h" into p=\frac{272-13h}{5}:

p=\frac{272-13(19)}{5}\\\\p=5

7 0
3 years ago
Which is the graph of the equation y-1=2/3(x-3)?
mamaluj [8]

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

y-1=2/3(x-3)

This is the equation of a line into point slope form

where

the point is (3,1) and the slope is m=2/3

using a graphing tool

The graph in the attached figure

4 0
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<h2>Answer:</h2>

<u>First, Arrange the data in ascending order</u>

=> 18, 20, [21], 22, 23.

<u>Now, Find the middle term i.e, 21.</u>

<u>Hence, Median of the given data is 21</u>.

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2 years ago
Answer plzzzzzzzzzzzzzzzzz
Anit [1.1K]

Answer:4 is your answer

Step-by-step explanation:

4 0
3 years ago
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