Sandhills middle school has 894 students in the entire student body there are 453 students who are girls what is the ratio of boys to the entire student body written as a fraction

Step-by-step explanation:

We know:

Boys + Girls = Total

453 are girls & 894 are total, so we have:

Boys + 453 = 894

Boys = 894 - 453

Boys = 441

We want ratio of BOYS TO TOTAL, that is:

Boys : Total = 441 : 894 = 147 : 298

3x + 4y -25 =0 represents the amount of change sianna should recieve

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: