3 years ago

Evaluate 9C5 and 11P4 .

1 answer:

7 0

$9C5=\dfrac{9!}{5!4!}=\dfrac{6\cdot7\cdot8\cdot9}{2\cdot3\cdot4}=6\cdot7\cdot3=126\\\\
11P4=\dfrac{11!}{7!}=8\cdot9\cdot10\cdot11=7920$

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Two decimals that are equivalent to 3.200

AleksAgata [21]

Answer:

Two or more decimal numbers are said to be equivalent decimals, when they name the same value (or same amount). For example, the decimals: 0.2 = 0.20 = 0.200 = 0.2000 etc. Thus by successive addition of zeros after the decimal part of the number after the decimal point means the same number and hence are equivalent. Therefore, the decimals: 5.3, 5.30, 5.300, 5.3000 etc are all equivalent.

Step-by-step explanation:

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2 years ago

Laura can finish payroll in 3 hours. it takes ben 5 hours to do the same job. If they work together, how long should it take the

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Answer:

15/8 hours .................

Step-by-step explanation:

Let L be Laura, and B be Ben. Then:

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Tamiku [17]

$\bf a\cdot \cfrac{1}{2}\left(a+\cfrac{1}{a} \right)\impliedby \textit{let's distribute first}
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\cfrac{a}{2}\left(a+\cfrac{1}{a} \right)\implies \cfrac{a}{2}\cdot a+\cfrac{\underline{a}}{2}\cdot \cfrac{1}{\underline{a}}\implies \cfrac{a^2}{2}+\cfrac{1}{2}\implies \cfrac{a^2+1}{2}$

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3 years ago

A racing bicycle with a cash price of 900 at at 90 down down and 40.50 per month for 24 months

Sav [38]

Answer:

1062 for 24 monthly payments plus 90$ down payment

Step-by-step explanation:

90+40.50x x=24 months

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3 years ago

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Yuri [45]

Answer: 2,496 orders in 24 hours

Step-by-step explanation:

24x104=2,496

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3 years ago