Answer:
Step-by-step explanation:
Two equations are 3x + y = 9 ------------(1)
and 3x - 5y = 15 ----------(2)
we have to calculate the value of x common for both.
We multiply equation 1 by 5 and add it to equation 2
15x + 5y = 45
3x - 5y = 15___
18x = 60
x = 60/18 = 10/3
Answer:
Probability of selecting a red card and rolling a number less than 3 is
Step-by-step explanation:
The probability of selecting a red card is
The probability of rolling a number less than 3 is
Probability of selecting a red card and rolling a number less than 3 is;
× = =
Answer:
(-1, 1)
Step-by-step explanation:
plug in -1 for x
y = 2(-1) + 3
y = -2 + 3
y = 1
(-1, 1)
The easiest way to do this is to plug in the numbers for the variebles and see if they equal the same in both sides. lets try the first one 5(1)+2(-3)=-1, multiply the nmbers to get 5-6=-1 now simplify to get the answer of -1=-1, they both equal the same so this means that the first option is the correct one
Hope this helps