81 is 37.5% of what number
1 answer:
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Answer:
"statement 1: The number of boys at the school is of the number of girls." is true.
Step-by-step explanation:
Given:
Ratio of Number of boys to the number of girls = 4 : 5
Total number of students = 270
To find:
Number of boys in terms of number of girls = ?
Solution:
As per given statement,
Let, Number of boys =
Let, Number of girls =
Total number of students = Number of boys + Number of girls = 270
Therefore, number of boys = 4 30 = 120
And, number of girls = 5 30 = 150
As per Statement 1:
Finding of the number of girls:
= Number of boys.
Finding of the total number of students:
= Number of boys.
Number of boys is equal to of total number of students.
So, "statement 1: The number of boys at the school is of the number of girls." is true.
Answer:
The number of days are independent and the total number of minutes are dependent.
The required model for the situation is
The table is shown below:
Step-by-step explanation:
Consider the provided information.
Joshua spends 25 minutes of each day reading. Let d be the number of days that he reads, and let m represent the total minutes of reading.
We need to determine which variable is independent and which is dependent.
Here, the number of days are independent and the total number of minutes are dependent.
If he spends 25 minutes each day. So the total number of minutes in d days are:
The required model for the situation is
Now make the table which showing the number of minutes spent reading over 7 days.
Substitute the value of d from 1 to 7 in
Number of days(D) Minutes(M)
1 25
2 50
3 75
4 100
5 125
6 150
7 175