Determine if the matrix below is invertible. Use as few calculations as possible. Justify your answer. Choose the correct answer below. A. The matrix is not invertible. If the given matrix is A, the equation Axb has no solution for at least one b in . B. The matrix is not invertible. In the given matrix the columns do not form a linearly independent set. C. The matrix is invertible. The given matrix has 4 pivot positions. D. The matrix is invertible. The given matrix is not row equivalent to the nn identity matrix.

it has to be a.

sine

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%40

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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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