Find the solution to the system of equations. You can use the interactive graph below to find the solution.
8x + 4y = 24
–7x + 7y = 28
X =
y =
y

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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:

c. 1,233 miles

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two