What is the solution of the inequality x^2-9x+18 less then or equal to zero? graph solution.

ANSWER

EXPLANATION

The given inequality is

This is the same as

The corresponding equation is

By the zero product principle,

We now plot the boundaries and test for the region that satisfies the inequality.

See attachment.

From the graph the solution is

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: