3 years ago

Question 21 of 30

Mathematics

1 answer:

Anna11 [10]3 years ago

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The points (-15, r) and (-3, 16) lie on a line with slope 5/4. Find the missing coordinate r.

Setler79 [48]

Answer:

r = 1

Step-by-step explanation:

we know that :

$Slope=\frac{y_{B}-y_{A}}{x_{B}-x_A}$

Then

$\frac{5}{4} =\frac{16-r}{-3-(-15)}$

Then

$\frac{5}{4} =\frac{16-r}{12}$

Then

5×12 = 4×(16-r)

Then

60 = 64 - 4r

Then

4r = 64 - 60

Then

4r = 4

Then

r = 1

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yulyashka [42]

Answer:

Step-by-step explanation:

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In 2003, the population of an African country was about 23.5 million people, which is 3 million more than 5 times the population

RUDIKE [14]

Answer:

Step-by-step explanation:

An equation is 5p + 2 = 18.5.

The 1950 population was approximately 3.3 million.

Step-by-step explanation:

If p million was the population in 1950 the equation is:

5p + 2 = 18.5

5p = 16.5

p = 16.5 / 5

p = 3.3 million.

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2 years ago

KARLA IS GIVEN EQUATION 10X+15=20 TO SOLVE. SHE SAYS THE SOLITION IS 1/2

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Karla is correct. 10 x 1/2 = 5. 15 + 5 =20.
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The table shows the relationship of how many pounds of apples are needed to make a certain number of pies: Number of Pies 5 10 1

Shkiper50 [21]

8 pounds of apples are needed.

If this helped and you have any other questions, feel free to comment on my wall. Hope this helped.

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2 years ago