Answer:
Let's solve your system of equations by elimination.
8x+9y=48;12x+5y=21
Steps:
Multiply the first equation by 5,and multiply the second equation by -9.
5(8x+9y=48)
−9(12x+5y=21)
Becomes:
40x+45y=240
−108x−45y=−189
Add these equations to eliminate y:
−68x=51
Then solve−68x=51for x:
−68x
/−68
=
51
/−68 (Divide both sides by -68)
x= −3
/4
Now that we've found x let's plug it back in to solve for y.
Write down an original equation:
8x+9y=48
Substitute
−3
/4
8x+9y=48:
8(
−3
/4
)+9y=48
9y−6=48 (Simplify both sides of the equation)
9y−6+6=48+6 (Add 6 to both sides)
9y=54
9y
/9 = 54
/9 (Divide both sides by 9) y=6
<em><u>Answer: x= −3
/4 and y=6</u></em>
Hope This Helps! Have A Nice Day!!
Answer:
m
Step-by-step explanation:
6b+24
Use the distributive property to solve. Multiply 6 and b for 6b. Multiply 6 and 4 for 24.
f(x) - g(x) = ![-2x^{3}+2x^{1/2}](https://tex.z-dn.net/?f=-2x%5E%7B3%7D%2B2x%5E%7B1%2F2%7D)
<u>Step-by-step explanation</u>:
<u>Given</u> :
- f(x) =
![x^{1/2} -x](https://tex.z-dn.net/?f=x%5E%7B1%2F2%7D%20-x)
- g(x) =
![2x^{3} -x^{1/2} -x](https://tex.z-dn.net/?f=2x%5E%7B3%7D%20-x%5E%7B1%2F2%7D%20-x)
f(x) - g(x) = (
) - (
)
⇒ (![x^{1/2} -x](https://tex.z-dn.net/?f=x%5E%7B1%2F2%7D%20-x)
)
⇒ ![-2x^{3}+2x^{1/2}](https://tex.z-dn.net/?f=-2x%5E%7B3%7D%2B2x%5E%7B1%2F2%7D)
f(x) - g(x) = ![-2x^{3}+2x^{1/2}](https://tex.z-dn.net/?f=-2x%5E%7B3%7D%2B2x%5E%7B1%2F2%7D)