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3 years ago

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The two fastest time in the past 20 years for the girls' 200-meter run at Clarkville Elementary School are 27.97 seconds and 27.

93 seconds. At yesterday's track meet, Claire ran 27.99 seconds. Was her time faster than either the two fastest? Explain.

1 answer:

Basile [38]3 years ago

6 0

No, her time was not faster than either of the two fastest.

27.99 is greater than both 27.97 and 27.93.

Hope this helps you! :)

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If you could show as much work as possible that would be amazing!!

Nikitich [7]

Answers:

<u>Reduce:</u>

Here we gave to simplify the expressions:

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Grouping similar terms:

$(x^{2}+\frac{12}{x^{2}})+(18x+28)$

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Rearranging the terms:

$(y^{3}+2y)+(\frac{27}{y^{2}}-3)$

Applying common factor $y$ in the first parenthesis and common factor $3$ in the second parenthesis:

$y(y^{2}+2)+3(\frac{9}{y^{2}}-1)$ This is the answer

<u>Multiply:</u>

19) $(\frac{12a^{9}u^{7}}{15 c})(\frac{3c^{4}}{21a^{13 u^{8}}})$

Multiplying both fractions:

$\frac{36 a^{9}u^{7}c^{4}}{315 c a^{13}u^{8}}$

Dividing numerator and denominator by 3 and simplifying:

$\frac{12 c^{3}}{105 c a^{4}u}$ This is the answer

21) $(x-\frac{3}{x}-7)(x^{2}-9x+\frac{35}{x^{2}}-18)$

$(\frac{x^{2}-3-7x}{x})(\frac{x^{4}-9x^{3}+35-18x^{2}}{x^{2}})$

Operating with cross product:

$x^{2} (x^{2}-3-7x) x(x^{4}-9x^{3}+35-18x^{2})$

$x^{9} -9x^{8} -18x^{7}+35x^{5}-7x^{8} +63x^{7}+126x^{6}-245x^{4}-3x^{7}+27x^{6}+54x^{5}-105x^{3}$

Grouping similar terms and factoring:

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<u>Divide:</u>

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$\frac{3k^{6}x^{6}}{2x^{2}k^{4}}$

Simplifying:

$\frac{3}{2} k^{2}x^{4}$ This is the answer

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$\frac{(x+5)(x^{2}+3x+2)}{(x+1)(x^{2}+11x+30)}$

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Applying the distributive property in numerator and denominator:

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Dividing by $5$ in numerator and denominator and simplifying:

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3 0

3 years ago

What should the first step be when solving for x?<br>-5x+6(-2x-13)=7

Juli2301 [7.4K]

Answer:

multiply the things in the () with6

Step-by-step explanation:

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2 years ago

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Does anybody know how to solve this please with work along with each one? Thank you

Allushta [10]

What grade are u in.

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3 years ago

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andre [41]

Step-by-step explanation:

C= pi×d

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so plug in the numbers

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