Answer:
Your solution is (-10, 6).
Step-by-step explanation:
Combining the equations is also known as substitution. This is done when you substitute one variable into another equation.
-5x + y = 56
x + y = -4
Let's change the second equation into one with one variable on each side.
y = -x - 4
Now, plug this into your first equation.
-5x + (-x - 4) = 56
Distribute the + sign.
-5x - x - 4 = 56
Combine the like terms.
-6x - 4 = 56
-6x = 60
Isolate x by dividing both sides by -6.
x = -10
Now plug this back into either equation.
-10 + y = -4
Add 10 to both sides to find y.
y = 6
Your solution is (-10, 6).
Check this by plugging in these values into the equation you have not checked yet.
-5(-10) + (6) = 56
50 + 6 = 56
56 = 56
Your solution is correct.
Hope this helps!
Answer:
Step-by-step explanation:
The only Pythagorean identities are:
Therefore, is correct as it's one of the pythagorean identities.
18 x 40 = 720 per week.....720 x 4 = 2880 per month earnings
net pay = 0.72(2880) = 2073.60 <=== cash inflow.
how much he spends per month is his cash outflow.
Answer:
£288150
Step-by-step explanation:
We'll use the formula
PRT/100= interest
But in this case we are looking for principal P
Rate= 2%
Interest= £5763
T=1
P= (I*100)/(RT)
P= (5763*100)/(2*1)
P= 288150
The principal is £288150
12 + 26 + 125 = 163
163 + 0.056(163) = 163 + 9.13 = 172.13
