Astudent uses the quadratic formula to solve a quadratic equation and determines that one of the solutions is x=7+ square root of -150. what are the values of a and b if this solution is written in the form x= a+bi, where a and b are real numbers?

use formula for the circle a=3.14

step-by-step explanation:

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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well what did you do it matters what you did : )

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greater than one

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