Answer:
The answere is (9,3)
Step-by-step explanation:
first equation
x - 2y = 3
9 - 2(3) = 3
9-6 = 3
3 = 3
second equations
2x - 3y = 9
2(9) - 3(3) = 9
18 - 9 =9
9 = 9
or
x - 2y = 3
x = 2y + 3
2(2y + 3 ) - 3y = 9
4y +6 - 3y = 9
y + 6 = 9
y =3
x - 2(3) = 3
x - 6 =3
x = 9
so (9,3)
i hope this helpful
Answer:
1. x = +/- 2
- 7
2. x =
+/- 
3. n =
+/- 
Step-by-step explanation:
1. Divide both sides by 2: (x + 7)^2 = 8
Square root both sides: x + 7 = +/- 2
Subtract 7 from both sides: x = +/- 2
- 7
2. Square root both sides: x - 3 = 
Since there is a negative inside the radical, we need to have an imaginary number:
. So, 
Add 3 to both sides: x =
+/- 
3. Divide by -5 from both sides: (n - 2)^2 = -2
Square root both sides: n - 2 = 
Again, we have to use i: 
Add 2 to both sides: n =
+/- 
Hope this helps!
Answer:
The fractional probability of getting 2 heads is 1/4.