Answer:
18/28
Step-by-step explanation:
Let the original price of the book be x. If, after a 33% markup on the initial price, the student had to pay 115.00 for it, then we can calculate x as:
(1 + 33%)(x) = 115
1.33x = 115
x = 115/1.33 = 86.47
This means that the bookstore paid $86.47 for the book.
Answer:
2.1 × 10^-5
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
Divide 30 by 6, since this will find the number of chairs she can paint in 1 minute:
30/6
= 5
So, the constant of proportionality is 5, since she can paint 5 chairs in a minute.
Answer:
2
Step-by-step explanation:
we will find the discriminant of the equation
d = b^2 - 4ac (here, a = 1 , b = 3 , c = 1. from the general formula: ax^2 + bx + c)
d = 9 - 4
d = 5
since d > 0, the roots are real and different
hence, the both the roots of this equation are equal
