x = numărul de monede de 2 euro
y = număr de bancnote de 5 euro
2x + 5y = 25
x + y = 8
y = 8 - x
2x + 5(8 - x) = 25
2x + 40 - 5x = 25
-3x = -15
x = 5
x + y = 8
5 + y = 8
y = 3
numărul de monede de 2 euro = 5
număr de bancnote de 5 euro = 3
Answer:
The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined. The range is the set of all valid y values.
Step-by-step:ex:pla:nation
Answer:
5/6
Step-by-step explanation:
(-5/8)÷(-3/4)=(-5/8)X(-4/3)=5/8 x4/3=5/6
Answer:
-6 and 3
Step-by-step explanation:
3-(-6)=3 +6=9 (two negative signs= positive sign)
-6 +3 = -3
It you have 6 negative tiles and add 3 positive tiles, the 3 negative tiles cancel 3 positive tiles. So hat is left is 3 negative tiles