3 years ago

The sum of two numbers is 21. The difference between them is 5. What are the two numbers?

Mathematics

1 answer:

Rasek [7]3 years ago

7 0

The answer is eight and thirteen

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is it a big number or short number

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3 years ago

Helpppppppppppppppp ill mark you brainlist write in y=mx+b form

Sholpan [36]

Answer:

The equation of the line in slope-intercept form is:

$y\:=\:\frac{-10}{7}x-\frac{45}{7}$

Step-by-step explanation:

Given the points

(-8, 5)

(-1, -5)

Finding the slope

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(-8,\:5\right),\:\left(x_2,\:y_2\right)=\left(-1,\:-5\right)$

$m=\frac{-5-5}{-1-\left(-8\right)}$

$m=-\frac{10}{7}$

We know the slope-intercept form of the line equation is

$y = mx+b$

where m is the slope and b is the y-intercept

substituting m = -10/7 and (-8, 5) in the slope-intercept form to determine the y-intercept

$5\:=\:\frac{-10}{7}\left(-8\right)+b$

$\frac{80}{7}+b=5$

$b=-\frac{45}{7}$

now substituting m = -10/7 and b = -45/7 in the slope-intercept form

$y = mx+b$

$y\:=\:\frac{-10}{7}x+\left(-\frac{45}{7}\right)$

$y\:=\:\frac{-10}{7}x-\frac{45}{7}$

Thus, the equation of the line in slope-intercept form is:

$y\:=\:\frac{-10}{7}x-\frac{45}{7}$

7 0

3 years ago

In another country, a road sign reads "80 kilometers to the next gas station". How far is that distance to the nearest mile?

rosijanka [135]

1 km = 0.621371 miles
80 * 0.621371 = 49.7097 miles

which is about 50
therefore your answer is B: 50 miles

3 0

3 years ago

On a quiz worth 5 points, two students earned a 5, zero students earned a 4, zero students earned a 3, zero students earned a 2,

olchik [2.2K]

The class average would be all the test scores added up and divided by the number of scores.

5+5+1+1+1+1+1+0+0+0+0= 15

15/11=1.37

The class average is 1.37

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4 years ago

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2000 multiplied by 3/8

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Type into a calculator 2000*(3/8)

The answer is 750

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4 years ago

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