First we subtract x values of points A and B
|3-6| = 3
now because the ration is 2:3 we need to divide that distance with 5 (sum of ratio numbers)
3/5
The result we multiply by 2 and add to x value of point A because that is the order of our ration (AC/BC)
2*3/5+3 = 4.2
Answer is 4.2
Do you mean checking your work? In that case it would be 9*20.
Hello!
You can put 3 in for x and see which on is true
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Inequality A
6(3) + 18 < 30
Multiply
18 + 18 < 30
Add
36 < 30
This is not true so this is not the answer
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Inequality B
8(3) - 4 < 10
Multiply
24 - 4 < 10
Subtract
20 < 10
This is not true so this is not the answer
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Inequality C
10(3) + 10 < 37
Multiply
30 + 10 < 37
Add
40 < 37
This is not true so this is not the answer
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Inequality D
15(3) - 10 < 40
Multiply
45 - 10 < 40
Subtract
35 < 40
This is true so this is the answer
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The answer is D) 15x - 10 < 40
Hope this helps!
First you combine like variables
9m - 3 = 42
then add both sides
9m = 45
then divide whats left
m = 5
