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vodomira [7]
2 years ago
14

Treys test score average decreased by 14 points this semester. Write a signed number to represent this change in average.

Mathematics
1 answer:
larisa [96]2 years ago
5 0

Answer:

-14

Step-by-step explanation:

Given: Trey's test score average decreased by 14 points this semester.

To find: a signed number to represent this change in average.

Solution:

The decrease can be denoted by minus (-) sign and increase can be denoted by plus (+) sign.

So, a signed number to represent the change in test score average is -14

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Use slopes and y-intercepts to determine if the lines 6x+y=−1 and −2x−5y=1 are parallel.
kobusy [5.1K]

Answer:

The two lines are not parallel.

Step-by-step explanation:

Every linear equation follows this structure:

y = mx + b

y is the y value

x is the x value

m is the gradient/slope of the line

b (or sometimes c) is the y-intercept of the line

Firstly, we have to get the y term on one side by itself.

6x + y = -1

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Secondly, we make it so the y term is just the y value.

The first equation is already like this, so we don't need to do anything to that.

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÷ -5  ÷ -5

y = (2x + 1) / -5

This can be expanded and simplified to:

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Thirdly, we have to compare the slopes and y-intercepts.

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If the slopes are the same and the y-intercepts are different, they are parallel. However, the slopes are different, therefore they are not parallel.

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3 years ago
How would the following triangle be classified?
yulyashka [42]

Step-by-step explanation:

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