Answer:
y = -3, x = 5
Step-by-step explanation:
In the first equation, x = 2 - y, x is on one side. So we can try to isolate the variable x in the second equation by adding 2y + 11 on both sides to get:
x = 2y + 11
So now we have equations x = 2 - y and x = 2y + 11. Therefore 2 - y = 2y + 11. Now we isolate variable y by adding y on both sides and subtracting 11 on both sides to get -9 = 3y. Divide by 3 on both sides to get y = -3.
Let's substitute that into x = 2 - y. Since y = -3, we now have x = 2 - (-3) = 5.
Answer: 9 x 10^-2
Step-by-step explanation: you need to get the number between 1-9. You can do that by moving the decimal to the right 2 times. That gives you 9.00 or 9. Since you moved it to the right 2 times that means the exponent would be negative
Answer:
X=-1
Step-by-step explanation:
-5x+1=6
change the signs
5x-1=-6
add 1 to - 6
5x = -5
divide both sides by 5
X=-1
Answer:
615.7536
Step-by-step explanation:
Remember the equation for finding the area of a circle is:
A=π
Just substitute in your radius for r and solve:
A=3.1416*
A=3.1416*196
A=615.7536