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Inga [223]
4 years ago
14

Find the value of x. *

Mathematics
1 answer:
Ludmilka [50]4 years ago
6 0

Answer:

13x + 7 + 4x + 15 = 90

17x + 22 = 90

17x = 68

x = 4

4(4) + 15= 16 + 15= 31

13(4) + 7 = 52 + 7 = 59

Step-by-step explanation:

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<h3>Answer:     (-1, 1)</h3>

=========================================================

Explanation:

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For example, the point (5,7) rotates to (7, -5). As another example, (2,-1) becomes (-1, -2). As another example, (-9,4) becomes (4,9).

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In our case, the point (-1,-1) will rotate to (-1, 1)

Note: A 270 degree counterclockwise rotation about the origin is the same as a 90 degree clockwise rotation about the origin. Refer to the diagram below.

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A convenience store manager notices that sales of soft drinks are higher on hotter days, so he assembles the data in a table, sh
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The regression equation to predict the number of cans sold on a day that is 90°F will be 871.

<h3>What is the linear system?</h3>

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

A convenience store manager notices that sales of soft drinks are higher on hotter days, so he assembles the data in the table, shown above. Use technology to find the equation of the least-squares regression line.

Then the regression line will be passing through (55, 340) and (84, 780). Then we have

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Then the regression equation to predict the number of cans sold on a day that is 90°F will be

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More about the linear system link is given below.

brainly.com/question/20379472

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2 years ago
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Answer:

a

Step-by-step explanation:

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3 years ago
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