If he drives 90,000 miles a year and drives the same amount of miles each week, he drives 7,500 miles each month.
12 months are in a year. Divide 90,000 by 12
90,000/12=7,500
Answer:
60(a+b) means that you would have to distribute
While 60a+ 60b is already in it's simplest form
Answer:
![x^2+18=-9x : x = -3, x = -6](https://tex.z-dn.net/?f=x%5E2%2B18%3D-9x%20%3A%20x%20%3D%20-3%2C%20x%20%3D%20-6)
Step-by-step explanation:
![x^2+18=-9x](https://tex.z-dn.net/?f=x%5E2%2B18%3D-9x)
Add 9x to both sides:
![x^2+18+9x=-9x+9x](https://tex.z-dn.net/?f=x%5E2%2B18%2B9x%3D-9x%2B9x)
Simplify:
![x^2+9x+18=0](https://tex.z-dn.net/?f=x%5E2%2B9x%2B18%3D0)
Solve with the quadratic formula:
For a quadratic equation of the form
the solutions are:
![x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}](https://tex.z-dn.net/?f=x_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-b%5Cpm%20%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D)
For ![a=1,\:b=9,\:c=18:\quad x_{1,\:2}=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1}](https://tex.z-dn.net/?f=a%3D1%2C%5C%3Ab%3D9%2C%5C%3Ac%3D18%3A%5Cquad%20x_%7B1%2C%5C%3A2%7D%3D%5Cfrac%7B-9%5Cpm%20%5Csqrt%7B9%5E2-4%5Ccdot%20%5C%3A1%5Ccdot%20%5C%3A18%7D%7D%7B2%5Ccdot%20%5C%3A1%7D)
![x =\frac{-9 + \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1} : -3](https://tex.z-dn.net/?f=x%20%3D%5Cfrac%7B-9%20%2B%20%5Csqrt%7B9%5E2-4%5Ccdot%20%5C%3A1%5Ccdot%20%5C%3A18%7D%7D%7B2%5Ccdot%20%5C%3A1%7D%20%3A%20-3)
![x =\frac{-9 - \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1} : -6](https://tex.z-dn.net/?f=x%20%3D%5Cfrac%7B-9%20-%20%5Csqrt%7B9%5E2-4%5Ccdot%20%5C%3A1%5Ccdot%20%5C%3A18%7D%7D%7B2%5Ccdot%20%5C%3A1%7D%20%3A%20-6)
The solution to the quadratic equation are:
![x=-3,\:x=-6](https://tex.z-dn.net/?f=x%3D-3%2C%5C%3Ax%3D-6)
Hope I helped. If so, may I get brainliest and a thanks?
Thank you, have a good day!
Ms. Garcia's homeroom because 28•3=84 and that means that since it said that her class sold 98 magazine subscriptions, it means that some students sold more.
And in Mr.Brown's class 24•3=72 so each student in his class only sold 3 magazine subscriptions each and no one sold more.
So, the answer is Ms. Garcia's Homeroom.
Answer:
y =-x+ 5
y = -2/3x + 5/3
Step-by-step explanation: