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3 years ago

11

I really need help please help if u could 9-11

2 answers:

Nuetrik [128]3 years ago

8 0

9) 35% of the 12,000 are 50-64 years old.
12,000 x 0.35 = 4,200

4,200 people were 50-64 years old

10) 25% of 596 people are over 64 years old
596 x 0.25 = 194

194 people were older than 64

11) yes, he is correct because 450 x 10%=45 and 450 x 30%=135

lapo4ka [179]3 years ago

5 0

For #10
I did question 10 two times and came up with 149 not 194. check it. 596 X 0.25 equals 149

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Camille placed blocks on a table in rows and columns. All the rows and columns had the same

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If all the rows and columns have the some number of blocks, then

(number of blocks in each row) times (number of blocks in each column)

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3 years ago

Line m in xy plane contains the points (2,4) and (0,1) which of the following is the equation of M

HACTEHA [7]

Answer:

The equation of line M in slope intercept form is $y=\frac{3}{2}x+1$

The equation of line M in standard form is $3x-2y=-2$

Step-by-step explanation:

step 1

Find the slope of line M

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the points

(2,4) and (0,1)

substitute

$m=\frac{1-4}{0-2}$

$m=\frac{-3}{-2}$

$m=\frac{3}{2}$

step 2

Find the equation of the line M in point slope form

$y-y1=m(x-x1)$

we have

$m=\frac{3}{2}$

$point\ (0,1)$

substitute

$y-1=\frac{3}{2}(x-0)$

$y-1=\frac{3}{2}x$ ----> equation in point slope form

step 3

Find the equation of line M in slope intercept form

$y=mx+b$

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$y-1=\frac{3}{2}x$

Adds 1 both sides

$y=\frac{3}{2}x+1$

step 4

Find the equation of the line M in standard form

$Ax+By=C$

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we have

$y=\frac{3}{2}x+1$

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3 years ago

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n-2 = 5n + 2

subtract 5n to both sides

n - 2 - 5n = 5n + 2 - 5n

simplify

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add 2 to both sides

-4n - 2 + 2 = 2 + 2

simplify

-4n = 4

divide both sides by -4

-4n/-4 = 4/-4

simplify

n = -1

hope it helps

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4 years ago

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