Answer:
Step-by-step explanation:
1/4 x 2 = 2/4
2/4 simplified = 1/2
Answer:
8/9
Step-by-step explanation:
Let
x = number of miles on the math course
There are 8 times as many males as females
Number of females = 8x
Total students of the course = number of males + number of females
= x + 8x
= 9x
Total students of the course = 9x
What fraction of the course are female?
Fraction of the course that are females = number of females / Total students of the course
= 8x / 9x
= 8/9
Fraction of the course that are females = 8/9
Answer: C
Step-by-step explanation: Cross multiply.
36/90 = x/100
3600/90 = 40
Answer:
48
Step-by-step explanation:
All of the sides are 48 because a rhombus has equal sides.
Answer:
Step-by-step explanation:
Let x = the number of 50-cent increases in the cost of a book rental.
Right now he is renting 38 books per day at $3 per rental. If he raises his price he will lose 4 rentals per increase. The money part of this is:
$3 + .5x = the price per book rental after the increase. That's how much money he will make. The money made is NOT the same thing as the number of rentals. Therefore, they are put into separate expressions.
The number of rentals is:
38 - 4x. This is the number of books he is currently renting minus the number of book rentals he will lose per price increase. Putting those 2 expressions together and multiplying them will give you the end result of this increase in price.
(3 + .5x)(38 - 4x) = 114 - 12x + 19x - 2x², or putting it in descending powers of x and combining like terms:
-2x² + 7x + 114