Quadratic Equation in Standard Form: ax2 + bx + c = 0.
Quadratic Equations can be factored.
Quadratic Formula: x = −b ± √(b2 − 4ac) 2a.
When the Discriminant (b2−4ac) is: positive, there are 2 real solutions. zero, there is one real solution. negative, there are 2 complex solutions.
HOPE THIS HELPS!!!
Lets x = Mary's age
Emily is there years older than twice her sister Mary's age = 2x + 3
Sum of both is less than 30:
x + 2x + 3 < 30
Solve for x
3x + 3 < 30
3x < 27
x < 9
Mary's age = 9
Inequality represents Mary's possible age:
0 < x < 9
Answer is the second one
0 < x < 9
Answer:
5/6 of an hour is 50 minutes.
Step-by-step explanation:
There are 60 minutes in 1 hour
5/6 = 50/60
If it is the same amount of time for all the skills, it would be 50 minutes in each skill.
Hope this helps. <3
Answer:
(-infinity,1/2) union (3/4,+infinity)...hope it helped you
