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andre [41]
3 years ago
7

Sam evaluated the expression x2y for x = 7 and y = 9. He got a value of 49. Which of the following statements is correct?

Mathematics
1 answer:
vodka [1.7K]3 years ago
3 0
Sam forgot to multiply

he added x and 2, which is actually 7 and 2, and multiplied that by 9
however, he was supposed to multiply 7 and 2 and 9 all together
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Romashka [77]

Answer:

Option (B) is correct.

To prove

As given the epression in the question is given by

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Now simplify the above

Terms are written as

\sqrt{8} = \sqrt{2\times 2\times 2} = 2 \sqrt{2}

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Put in the above expression.

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Answer:

2: 67

3:67

4: 113

Step-by-step explanation:

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