Ivy randomly surveys students in her school to learn about mobile phone password use. of 25 respondents 14 use a password. based on ivy's data how many of the 275 students in her school would be expected to use a password?

Out of 25 respondents 14 use a password: 14/25

x amount of students out of 275 use a password: x/275

Set both fractions equal to each other

14/25 = x/275

Cross multiply.

14(275) = 25(x)

3850 = 25x

Isolate the x. Note the equal sign. What you do to one side you do to the other.

25x/25 = 3850/25

x = 3850/25

x = 154

154 students out of 275 are expected to use a password

hope this helps

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

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