Choose the number that is composite. A. 2 B. 21 C. 31 D. 17

Mathematics

1 answer:

Stella [2.4K]3 years ago

6 0

A composite number has more than two factors. (B) 21 is a composite number because the factors of 21 are 7 × 3.

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Answer:

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Step-by-step explanation:

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Answer:

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The winner of a 100 mile race drove his car to victory at a rate of 120.1229 mph. What was his time to the nearest thousandth of

Zigmanuir [339]

Answer:

$t=1.201\ \text{hour}$

Step-by-step explanation:

Given that,

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We know that velocity of an object is equal to distance per unit time. Let t is the time. So,

$v=\dfrac{d}{t}\\\\t=\dfrac{d}{v}\\\\t=\dfrac{120.1229}{100 }\\\\t=1.201229\ \text{hour}\\\\\text{Round to the nearest thousandth}\\\\t=1.201\ \text{hour}$