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ICE Princess25 [194]
3 years ago
15

Will give brainliest !!

Mathematics
2 answers:
lesya692 [45]3 years ago
8 0

Answer:

[B]=2

Step-by-step explanation:

B=\left[\begin{array}{ccc}3x-5&-3+2y\\11-3x&2y-5\end{array}\right]

With x=3 and y=4

B=\left[\begin{array}{ccc}3(3)-5&-3+2(4)\\11-3(3)&2(4)-5\end{array}\right]

B=\left[\begin{array}{ccc}9-5&-3+8\\11-9&8-5\end{array}\right]

B=\left[\begin{array}{ccc}4&5\\2&3\end{array}\right]

solving the determinant of matrix B

[B]=\left[\begin{array}{ccc}4&5\\2&3\end{array}\right]=(4.3-5.2)=(12-10)=2

KonstantinChe [14]3 years ago
5 0

I think the answer is (B)=2(B)=2 Im not 100% sure though.

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Consider the complete question is "A store has two different sizes of ice cream on sale this week. The smaller container costs $3.87 for 48 ounces. The larger container costs $6.42 for 128 ounces. which ice cream costs less per ounce?"

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Solution:

We know that

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Per ounce cost of small container =\dfrac{3.87}{48}

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Since, 0.08 > 0.05 therefore, the per ounce cost of larger container is less.

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