Let the numbers be x and y. Then xy = -30 and x+y = -3.
Solve xy = -30 for y: y = -30/x
subst. -30/x for y in x+y= -3: x - 30/x = -3
Multiply all 3 terms by x: x^2 - 30 = -3x, so x^2 + 3x - 10 = 0
Solve this quadratic equation for x. x: {-5, 2}
If x = -5, then x+y = -3 becomes -5 + y = -3, and y = 2.
You should check to determine whether x=2 is also correct. If it is, what is the corresponding y value?
Answer:
He paid an of 4790
Step-by-step explanation:
If John took a loan of 18550
Then in 60 months, we will pay back 389 multiply by 60
389 × 60 = 23340
Therefore he paid an interest of 23340 minus 18550, that is
23340 - 18550 = 4790
3 hundreds is 300, 17 tens is 170, and 2 ones is 2. You add them all and then you get 472.
22/7 and 3.14 are the same thing but 3.14 is just a easier whey of saying it/ understanding it
