Mathematics, 30.09.2019 20:00 aarionna8

Reina and sam are multiplying (84)5 (73)9.

reina's work sam's work
(84)5 (73)9 = 84 + 573 + 9 = 89712 reina's
(84)5 (73)9 = 84⋅573⋅9 = 820727 sam's

is either of them correct? explain your reasoning.

Answers: 1

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Answer from: sky81428

This is a tricky question that Reina and Sam are multiplying (84)5 (73)9
and their work are
(84)5 (73)9 = 84 + 573 + 9 = 89712 Reina's
(84)5 (73)9 = 84⋅573⋅9 = 820727 Sam's
Actually they are doing or multiplying using exponents.

Reina’s work (8⁴)₅(7³)⁹=8⁴⁺⁵+ 7³⁺⁹= 8⁹ 7¹²
This is incorrect because she added exponents instead of multiplying exponents

Sams work (8⁴)⁵ (7³)⁹=8⁴ˣ⁵ 7³ˣ⁹= 8²⁰ 7²⁷
This is correct because Sam multiplied exponents correctly

Exponents are multiplied not added.

Answer from: evelinn19

Reina’s work (8⁴)₅(7³)⁹=8⁴⁺⁵+ 7³⁺⁹= 8⁹ 7¹²

This is incorrect because she added exponents instead of multiplying exponents

Sams work (8⁴)⁵ (7³)⁹=8⁴ˣ⁵ 7³ˣ⁹= 8²⁰ 7²⁷

This is correct because Sam multiplied exponents correctly

Exponents are multiplied not added.

Step-by-step explanation:

Answer from: Quest

the answer is 5636.7

Answer from: Quest

answer set (b) 0.5, 3/4 80% is in order from least to greatest.

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form. typically, the best form in which to evaluate rational numbers is in decimals. in order to convert a percent to a decimal, you would divide the given percentage by 100. you can also accomplish the conversion by moving the decimal point over two places to the left. for example, the decimal value of 80% is 80/100, or 0.8. in order to convert a fraction to a decimal, you need to divide the numerator by the denominator. for example, 3/4 is 0.75. so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.

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You know the right answer?

Reina and sam are multiplying (84)5 (73)9.

reina's work sam's work
(84)5 (73)9 = 8...

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