Hi there!
![2x + 6 {x}^{2} - 1 = 3 {x}^{2}](https://tex.z-dn.net/?f=2x%20%2B%206%20%7Bx%7D%5E%7B2%7D%20%20-%201%20%3D%203%20%7Bx%7D%5E%7B2%7D%20)
First subtract 3x^2 from both sides.
![2x + 3 {x}^{2} - 1 = 0](https://tex.z-dn.net/?f=2x%20%2B%203%20%7Bx%7D%5E%7B2%7D%20%20-%201%20%3D%200)
Now rearrange the equation.
![3 {x}^{2} + 2x - 1 = 0](https://tex.z-dn.net/?f=3%20%7Bx%7D%5E%7B2%7D%20%20%2B%202x%20-%201%20%3D%200)
Finally we can see our answer.
![a = 3](https://tex.z-dn.net/?f=a%20%3D%203)
![b = 2](https://tex.z-dn.net/?f=b%20%3D%202)
Answer:
(-9/8, 1/36)
Step-by-step explanation:
Midpoint Formula: ![(\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )](https://tex.z-dn.net/?f=%28%5Cfrac%7Bx_1%2Bx_2%7D%7B2%7D%20%2C%5Cfrac%7By_1%2By_2%7D%7B2%7D%20%29)
Step 1: Find midpoint <em>x</em>
x = (1/4 + -5/2)/2
x = (-9/4)/2
x = -9/8
Step 2: Find midpoint <em>y</em>
y = (-4/9 + 1/2)/2
y = (1/18)/2
y = 1/36
Step 3: Write midpoint coordinates
(-9/8, 1/36)
The rectangle area is 98. So if you split it in half, you would get 2 squares. Half of 98 is 49.
If it is now a square, you now simply know, that 7*7=49. Meaning that The sides of the square are 7 each.
7 times the 4 sides equals 28. So the perimeter of one square is 28.
So you have to divided 84 divided by 3 to figure out how much kids in each class. when you divide you get 28. So 28 kids in each room.....hope I helped.
Answer:
12m+11w ( i don't think this is right)
Step-by-step explanation:
$7m+5m=12m
3w+8w=11w