1.905 rounded to the nearest tenth is 1.9
Discriminant = b^2 - 4ac, where a, b and c come from the form of the quadratic equation as ax^2 + bx + c
Discriminant = (4)^2 - 4(1)(5)
= 16 - 20
= -4
-4 < 0, therefor there are no roots
(If the discriminant = 0, then there is one root
If the discriminant > 0, there are two roots, and if it is a perfect square (eg. 4, 9, 16, etc.) then there are two rational roots
If the discriminant < 0, there are no roots)
Answer:
Rachel earns per hour is $ 13.64 .
Step-by-step explanation:
As given
Rachel earned $85.25 for working 
hours.
i.e
Rachel earned $85.25 for working 
hours.
Now calculate earning of Rachel for 1 hour .
Therefore Rachel earns per hour is $ 13.64 .
By solving the equation
1/2 +x =4/7
x = 4/7 -1/2
x= 1/14
Answer:
27⊂14=7
Step-by-step explanation:
