1/2 of chance. 10 yellow out of 20. Lowest terms for 10/20 is 1/2.
Answer:C
Step-by-step explanation: I believe it is C according to my calculations
sqrt (3) * sqrt(16) = 4sqrt(3) = irrational
2sqrt(9) *sqrt(4) = 6*2 = 12 rational
7 sqrt(3)* sqrt(3) = 7*3 =21 rational
sqrt(5) * sqrt(5) = 5 rational
13ab^3(1+3ab) -ANSWER
You're factorising 13ab^3 from the expression - hope this helps:)
If A*B is defined then matrix A must have the same number of columns as B has rows. In other words,
dimensions of matrix A = m x n
dimensions of matrix B = n x p
So for now, matrix AB is m x p. Note how the n terms match up. The 'n' terms are the inner terms
(m x n) x (n x p)
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We're told that A*B is a square matrix, so that means m = p. We have the same number of rows and columns. This means
dimensions of matrix A = m x n
dimensions of matrix B = n x m
(m x n) x (n x m)
So matrix A*B is an m x m matrix.
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If we swap things around to compute B*A, then we can see that this is possible. Why? Because the 'm's now match up
dimensions of matrix B = n x m
dimensions of matrix A = m x n
The 'm's are now the inner terms.
(n x m) x (m x n)
meaning that matrix B*A is an n x n matrix. This proves that B*A is defined.