Solution:
1) Solve for x in 3x+7y=-1
x=\frac{-1-7y}{3}
2) Substitute x=\frac{-1-7y}{3} into 4x-3y=11
\frac{4(-1-7y)}{3}-3y=11
3) Solve for y in \frac{4(-1-7y)}{3}-3y=11
y=-1
4) Substitute y=-1 into x=\frac{-1-7y}{3}
x=2
5) Therefore,
x=2
y=-1
Done!
Answer:
our answer is 8
Step-by-step explanation:
f(x)=y
and -3 is our x
so
-3times 3 +4 -5
9-1=8
Answer:
<u>372 ft</u>
Step-by-step explanation:
This can be solved through cross multiplication.
310ft/10sec= x/12sec
Multiply the values across from each other. (A good way to know you've done it properly is if the numbers you multiplied are in different measurements. ex: 1 value is feet, the other is seconds)
310 x 12 = 3720
Divide by the remaining value.
3720 / 10 = 372
Answer:
Step-by-step explanation:
-31
Answer:
20 years. ($221,246.39, to be exact.)
Step-by-step explanation:
Compound interest is a system where the interest rate always applies for the amount you first put your money in. So if you put 90,000 dollars as your first deposit, the annual interest would only apply to $90,000 every time.
