Answer:
24 males
7 females
Step-by-step explanation:
<u>Step 1: Write the data</u>
Total number of students: 31
Number of males: x
Number of females: x - 17
<u>Step 2: Form an equation</u>
males + females = total students
x + x - 17 = 31
2x = 48
x = 24
There were 24 males
<u>Step 3: Find the number of females</u>
Number of females = x - 17
Number of females = 24 - 17
Number of females = 7
Therefore, there were 24 males and 7 females in the class.
!!
The sunglasses were originally priced at $ 21.
Given that Lori brought sunglasses and flip-flops at a half-off sale, to determine, if she spent a total of $ 21 on the two items, what was the original price of the sunglasses (taking into account that they both cost the same) will be you must perform the following calculation:
- 50 = 21
- 100 = X
- 100 x 21/50 = X
- 2100/50 = X
- 42 = X
Thus, the total price of both goods is $ 42, which, divided in half, results in $ 21 (42/2).
Therefore, the sunglasses were originally priced at $ 21.
Learn more in brainly.com/question/731526
Answer:
4 students
Step-by-step explanation:
As shown in the diagram, let U=[The total number of students questioned]
A=[Those who liked peanut butter ]
B=[Those who liked jam ]
x = those who like both peanut butter and jam.
Also 6 liked neither peanut butter nor jam.
From the diagram we can write the mathematical equation as follow and solve for x
We add x and subtract 30 to both sides.
Therefore 4 students like both peanut butter and jam.
Answer:
$433
Step-by-step explanation:
Add the costs