Answer:
y=-2/3x+4
Step-by-step explanation:
Slope intercept form is y=mx+b
y has to be alone and "x" has to be on the other side
the equation will be 3y=-2x+12
then divide by 3 to make "y" alone
this leaves the equation y=-2/3x+12
Answer:
110
Step-by-step explanation:
Bigger then 90 less than 120
Answer:
10^5 ( 10 raised to power 5)
Step-by-step explanation:
10*10*10*10*10
So it was 75 to 25 people. that would be decrease by 66.66666666 (forever) percent
Casey is 18 years old and Ralph is 3 years old.
Step-by-step explanation:
Let,
Age of Casey = x
Age of Ralph = y
According to given statement;
x = 6y Eqn 1
In two years
x+2=4(y+2)
x+2=4y+8
x = 4y+8-2
x = 4y+6 Eqn 2
Putting value of x from Eqn 1 in Eqn 2
![6y=4y+6 \\6y-4y=6\\2y=6](https://tex.z-dn.net/?f=6y%3D4y%2B6%20%5C%5C6y-4y%3D6%5C%5C2y%3D6)
Dividing both sides by 2
![\frac{2y}{2}=\frac{6}{2}\\y=3](https://tex.z-dn.net/?f=%5Cfrac%7B2y%7D%7B2%7D%3D%5Cfrac%7B6%7D%7B2%7D%5C%5Cy%3D3)
Putting y=3 in Eqn 1
![x=6(3)\\x=18](https://tex.z-dn.net/?f=x%3D6%283%29%5C%5Cx%3D18)
Casey is 18 years old and Ralph is 3 years old.
Keywords: word problems, substitution method
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