Answer:
x=0 y=0
Step-by-step explanation:
multiple the first equation by 2
after subtract equation 2 from 1
after getting x you substitute the value of x in any of the equation for your y
Answer:
x = 9
Step-by-step explanation:
Using the rule of exponents
× ⇔
Given
= × = =
Since the bases on both sides are common, then equate the exponents
x = 9
Answer:
4^4= 4^-1(3r+2)
4^4= 4^(-3r-2)
-3r-2 = 4
-3r= 6
r= -2
-
Step-by-step explanation:
Answer: 1.9
Step-by-step explanation:
3.5 - 1.6 = 1.9
To make sure it’s the right answer;
1.9 + 1.6 = 3.5
For this problem I would change:
2x + 3y = 25 into
-2x - 3y = -25
Then, I would add up both equations by lining them up top of another.
5x + 3y = 31
+ -2x - 3y = -25
3x = 6
x = 2
Now that you have x, solve for y.
5x + 3y = 31
5(2) + 3y = 31
10 + 3y = 31
3y = 21
y = 7
So, x is 2 and y is 7.
Check to see if the values are correct by plugging them into the other equation.
2x + 3y = 25
2(2) + 3(7) = 25
4 + 21 = 25
25 = 25
Since the values are correct, the solution to this problem is A (2, 7).