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artcher [175]
3 years ago
7

This is a problem that I have to solve with matrixes, Please show me all of the work. I will award brainliest.

Mathematics
1 answer:
Elina [12.6K]3 years ago
6 0

Answer:

The total points by Washington High School =  162 points

The total points by  Johnson High School   =  159 points

The total points by  Roosevelt High School =  108 points

The total points by  Lewis High School =  196 points

Washington High School  has WON the meet.

Johnson High School came second.

The difference in the points= 2 points

Step-by-step explanation:

Points awarded for first place = 10 points

Points awarded for second place = 8 points

Points awarded for third place = 7 points

About Washington High School

10 first places  = 10 x ( 10) = 100 points

6 second places  = 6 x ( 8) = 48 points

2 first places  = 2 x ( 7) = 14 points

So, the total points by  Washington High School  = Sum of all points  

=  100 + 48 + 14   =  162 points     .............. (1)

About Johnson High School

8 first places  = 8 x ( 10) = 80 points

9 second places  = 9 x ( 8) = 72 points

1 first places  = 1 x ( 7) = 7 points

So, the total points by  Johnson High School  = Sum of all points  

=  80 + 72 + 7   =  159 points    .............. (2)

About Roosevelt High School

4 first places  = 4 x ( 10) = 40 points

5 second places  = 5 x ( 8) = 40 points

4 first places  = 4 x ( 7) = 28 points

So, the total points by  Roosevelt High School  = Sum of all points  

=  40 + 40 + 28   =  108 points  .............. (3)

About Lewis High School

3 first places  = 3 x ( 10) = 30 points

3 second places  = 3 x ( 8) = 24 points

6 first places  = 6 x ( 7) = 42 points

So, the total points by  Lewis High School  = Sum of all points  

=  30 + 42 + 24   =  96 points      .............. (4)

Now, comparing all four equation, we get that:

Washington High School  has WON the meet.

Johnson High School came second.

The difference in the points  = 162 - 159 = 2 points

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A singles tennis court is a rectangle 27 feet wide and 78 feet long. Suppose a player at corner A hits the ball to her opponent
Sav [38]
Basically, you just have to find the length of the rectangle that is 27 x 78 feet.
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3 years ago
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y = 0.25x+1

Step-by-step explanation:

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2 years ago
Whoever explains and puts the right answer will get Brainlisted
alexgriva [62]

Answer:

A

Step-by-step explanation:

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How do I solve for x step by step?
djyliett [7]
<h3>12 = -5x/4 - 8</h3>

Multiply both sides of the equation by 4.

<h3>48 = −5x − 32</h3>

Swap the sides so that all variable terms are on the left side.

<h3>−5x − 32 = 48</h3>

<em>Add 32 to both sides.</em>

<h3>−5x = 48 + 32</h3>

<em>Add 48 and 32 to get 80.</em>

<h3>−5x = 80</h3>

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