Use the tenth’s theory and herons theory u will get it
the answer in standard form is 10+3
Answer:
He gained 150 pencils
Step-by-step explanation:
So this person had 75 pencils and now has 225?
If so, this is just a subtraction problem!
Steps:
1. 225-75=150
--Subtract how many pencils he had from how many he has now to see how much he gained
This person gained 150 pencils.
Hope this helped!! :)
Answer:
- -6x² - 6 = -7x - 9
- -6x² + 7x - 6 + 9 = 0
- -6x² + 7x + 3 = 0
- 6x² - 7x - 3 = 0
<u>Discriminant:</u>
- D = (-7)² - 4*6*(-3) = 49 + 72 = 121
<u>Since D > 0, there are 2 real solutions:</u>
- x = (- (-7) ±√121 )/12
- x = (7 ± 11)/12
- x = 1.5, x = -1/3
