87haymaker
29.10.2020 •
Mathematics
40% of the students at Wilson
Middle School said they would go
trick-or-treating this year. If 300
students said they were going to
trick-or-treat, how many students
attend the school?
A) 750
B) 120
C) 850
N 75
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Ответ:
A
Step-by-step explanation:
40% of 750 is 300 you can confirm this because 75 is 10% of 750 and 75 * 4 = 300.
Ответ:
Step-by-step explanation:
Given
5x + 2x + 2 = 9x + 4
9x - 5x - 2x = 2 - 4
9x - 7x = - 2
2x = - 2
x = - 2 / 2
Therefore x = -1.