Which of the following subsets of R3×3R3×3 are subspaces of R3×3R3×3? A. The 3×33×3 matrices of rank 11 B. The 3×33×3 matrices with all zeros in the second row C. The 3×33×3 matrices with determinant 00 D. The 3×33×3 matrices with trace 00 (the trace of a matrix is the sum of its diagonal entries) E. The diagonal 3×33×3 matrices F. The 3×33×3 matrices whose entries are all greater than or equal to 00

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answer: i realy don't get it that much can you me figer it out pleas you

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24+x=y

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hello,

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

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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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