143, love :) Hope this helps
Well the formula to convert Fahrenheit to Celsius is (temperature of Fahrenheit -32) * 5/9.
Answer:
10x-22
Step-by-step explanation:
((x+2)(x-1))-((x-4)(x-5))
(x^2-x-2)-(x^2-9x+20)
x^2 + x - 2
+ (-x^2+9x-20)
_______________
10x-22
Andy and Diana both got some pocket money from their aunt.
Andy spent all his money on collector's coins, he bought 5 of them.
Diana bought 3 of such coins, and she brought home 20 dollars of change.
after they came home their sister said "hah! I bet you I can find out how much each coin costs even if you don't tell me how much money your aunt gave you, if she gave you both the same amount!"
So, how much does each coin cost?
Answer:
Point form - (-10,9)
Equation form - x=-10,y=9
Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation.
I hope this helps you out! ☺
