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3 years ago

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

1 answer:

4 0

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.

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Sveta_85 [38]

Answer:

The equations y=10x+250 and y=20x represent the situation.

Step-by-step explanation:

Given that:

Cost to rent the park = $250

Cost per person for t-shirt and snack = $10

Cost of participation = $20

y = cost

x = number of people

Cost for the organization;

y = 10x + 250

Amount generated from people's participation

y = 20x

Hence,

The equations y=10x+250 and y=20x represent the situation.

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3 years ago