The set of all 22 matrices is a vector​ space, under the usual operations of addition of matrices and multiplication by real scalars. Determine if the set H of all matrices of the form is a subspace of . Choose the correct answer below. A. The set H is a subspace of because ​Span{H}. B. The set H is not a subspace of because the product of two matrices in H is not in H. C. The set H is not a subspace of because H does not contain the zero vector of . D. The set H is a subspace of because H contains the zero vector of ​, H is closed under vector​ addition, and H is closed under multiplication by scalars. E. The set H is not a subspace of because H is not closed under vector addition. F. The set H is not a subspace of because H is not closed under multiplication by scalars.

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c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

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to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

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step-by-step explanation:

the answer is b.

step-by-step explanation: