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Naya [18.7K]
3 years ago
6

Someone help please?

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
4 0

Answer:

A. 76

B.  150

C.  38

Step-by-step explanation:

vekshin13 years ago
3 0

Answer:

(a) 76 students drink coffee.

(b) 150 students drink coffee, tea, or both.

(c) 38 students do not drink both tea and coffee.

Step-by-step explanation:

This question requires an analysis of Venn diagrams.

(a) The two circles are shared, but only 76 students drink coffee.

(b) I'm pretty sure this is a trick question. It says "how many drink tea OR coffee OR both?" probably meaning that they want you to count everyone besides the 38 who do not drink either. This could be 28, but I am sure that it is 150.

(c) As seen outside of the Venn diagram, 38 do not drink either coffee or tea.

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FinnZ [79.3K]

Answer: a) -6, b) 32, c) -48, d) 9, e) -12

Step-by-step explanation:

Since we have given that

A and B are 4 × 4 matrices.

Here,

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We need to find the respective parts:

a) det (AB)

\mid AB\mid=\mid A\mid.\mid B\mid\\\\\mid AB\mid=-3\times 2=-6

b) det (B⁵ )

\mid B^5\mid=\mid B\mid ^5=2^5=32

c) det (2A)

Since we know that

\mid kA\mid =k^n\mid A\mid

so, it becomes,

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d) \bold{det(A^TA)}

Since we know that

\mid A^T\mid=\mid A\mid

so, it becomes,

\mid A^TA\mid=\mid A^T\mid \times \mid A\mid=-3\times -3=9

e) det (B⁻¹AB)

As we know that

\mid B^{-1}\mid =\mid B\mid

so, it becomes,

\mid B^{-1}AB}\mid =\mid B^{-1}.\mid \mid A\mid.\mid B\mid=2\times -3\times 2=-12

Hence, a) -6, b) 32, c) -48, d) 9, e) -12

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He didn’t multiply the equation by 1/2 in the second part so it threw his whole answer off. Hope this helps
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Step2247 [10]

The 3rd option is correct

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