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Sonja [21]
3 years ago
5

How does a "for every" statement show a ratio comparison?

Mathematics
1 answer:
Alchen [17]3 years ago
8 0
Example: For every 3 boys, there are 4 girls.

Ratio: 3:4 also 3/4

How to use it?

Example question: If there are 3 boys for every 4 girls and there are 27 boys in the class, how many girls are there?

How to set up the ratio:

3 27
— = —
4 x


Solve it?

[Cross Multiply]

3x= 108

[Divide]

X= 36

How to check it?

Reduce 27/36 and see if it equals 3/4

OR

Plug both into the calculator and both should come out with the same decimal. In this case it is 0.75
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Please help. Just put the coords as the answer.
Julli [10]

Answer:

If you were look for the cords for the blue one. It will be (-5,4) for O (-2,1) for W and (-7,-3) for N

If it was for the Green one. It will be (-5,-2) for 'O (-1,-2) for 'W and (-5,-7) for 'N

Hope This Helped

5 0
3 years ago
1. If two nonvertical lines are parallel, what do we know about their slopes? If two lines are perpendicular and neither is para
yanalaym [24]

Answer:

Two straight lines with slopes m and m' are parallel when m = m'

Two straight lines with slopes m and m' are perpendicular when m × m' = - 1.

Step-by-step explanation:

Let us assume that the two non-vertical lines in the slope-intercept form are

y = mx + c ........... (1) and  

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If those two lines are parallel then we can say the slope of them will be the same i.e. m = m'

Now, if given two straight lines (1) and (2) are perpendicular to each other and neither of them is parallel to the axes, then we can write m × m' = - 1. (Answer)

6 0
3 years ago
1/3(x+4)=20 need help
sukhopar [10]


1/3(x+4)=20

1/3x+4/3=20

1/3x=56/3

x= (56/3) / (1/3)

x= 56

5 0
3 years ago
Read 2 more answers
Math is annoying! Can someone help me please?
lord [1]
16.  would be C since they both consist of the same variable to the same power

17. x-2x+7-9+4x
     c. 3x-2
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3 years ago
Simplify -7y(4-y)<br> plz also include explanation
Lana71 [14]
Use distributive property
-28y+8y= -20y

6 0
3 years ago
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