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Elina [12.6K]
3 years ago
8

If 8 times a number is decreased by 5, the result is 23.what is the number.

Mathematics
1 answer:
Marina CMI [18]3 years ago
4 0

Answer:

The number is 3.5.

Step-by-step explanation:

1) Form an equation.

8x-5= 23

2) Add 5 to both sides.

8x= 28

3) Divide both sides by 8.

X= 3.5

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The slope is 7/5 and the equation of the line is 5y - 7x = 0 if the points ​(10​,14​) and ​(35​,49​) form a proportional relationship.

<h3>What is the slope?</h3>

The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).

\rm m =\dfrac{y_2-y_1}{x_2-x_1}

From the above formula, we can find the slope of the line:

m = (49-14)/(35-10)

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The equation will be:

y = 7x/5 + c

here c is the y-intercept

Plug (10, 14) in the equation to find the value of c

14 = 7(10)/5 + c

c = 0

y = 7x/5  or

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Thus, the slope is 7/5 and the equation of the line is 5y - 7x = 0 if the points ​(10​,14​) and ​(35​,49​) form a proportional relationship.

Learn more about the slope here:

brainly.com/question/3605446


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