Hey there! :D
Add the expression's together.
3x+y=27
-3x+4y= -42
3x+(-3x)= 0
y+4y=5y
27+(-42)= -15
5y=-15
Divide both sides by 5.
y=-3
Now, find x.
3x+y=27
3x-3= 27
3x=30
x=10
The solution is (10,-3).
I hope this helps!
~kaikers
Answer: The interest is: $528.00
Step-by-step explanation:
Formula ⇒ I = PRT
⇒ <u>P</u> is the principal amount, $2200.00.
⇒<u>R</u> is the interest rate, 12% per year, or in decimal form, 12/100=0.12.
⇒ <u>T</u> is the time involved, 2....year(s) time periods.
⇒So, t is 2 year time periods.
⇒ Finally, To find the simple interest, you just multiply 2200 × 0.12 × 2 to get that:
The interest is: $528.00
* Hopefully this helps:) Mark me the brainliest:)!!
∞ 234483279c20∞
Answer:
y=14
Step-by-step explanation:
plug in -2 in the place of x
y=-7(-2) y=14
Answer:
last one plz give brainlist
Answer:
x=-6 y=-26
Step-by-step explanation:
in the first is -4 every time, in the second is -20 every time
