Answer:
I don't understand who would be charged less money cause it's just the parents and the child and the child is only paying them from the hours being on the phone. but from what I know 90÷ 3 is 30. so the parents would be making like $30 but if its multiplication 90×3 is like 270
Step-by-step explanation:
![9x^2 - 18 x + 93= -6](https://tex.z-dn.net/?f=9x%5E2%20-%2018%20x%20%2B%2093%3D%20-6)
take away 93 from both sides
![9x^2 - 18 x = - 99](https://tex.z-dn.net/?f=9x%5E2%20-%2018%20x%20%3D%20-%2099)
Divide by 9 through
![x^2 - 2 x = - 11](https://tex.z-dn.net/?f=x%5E2%20-%202%20x%20%3D%20-%2011)
Add (b/2)^2 to form perfect square
![x^2 - 2 x + ( \frac{2}{2} )^2 = - 11 + ( \frac{2}{2} )^2](https://tex.z-dn.net/?f=x%5E2%20-%202%20x%20%2B%20%28%20%5Cfrac%7B2%7D%7B2%7D%20%29%5E2%20%3D%20-%2011%20%2B%20%28%20%5Cfrac%7B2%7D%7B2%7D%20%29%5E2%20)
Form perfect square
![(x - 1)^2 = - 10](https://tex.z-dn.net/?f=%28x%20-%201%29%5E2%20%3D%20-%2010%20)
Square root both sides to find x
![x - 1 = \pm \sqrt{-10}](https://tex.z-dn.net/?f=x%20-%201%20%3D%20%5Cpm%20%20%5Csqrt%7B-10%7D%20)
add 1 on both sides
Answer:
12
Step-by-step explanation:
2x (3) = 72 so 6x = 72 and so x = 12
Answer:
200
Step-by-step explanation:
The total number of "ratio units" is 4+5 = 9, so each one stands for 1800/9 = 200 M&Ms.
The difference in red and green ratio units is 1 unit, so the difference in the count of M&Ms will be 200 pieces.
Answer:
5
12,24,36,48,60,84
^ ^ ^ ^ ^ ^
1. 2. 3. 4. <em>5</em><em>. </em><em> </em>6
Step-by-step explanation:
hope I helped
have a nice day!