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algol13
3 years ago
6

There are 20 cars competing in a race. In how many ways can the cars be awarded first, second, and third place?

Mathematics
1 answer:
valentinak56 [21]3 years ago
7 0

Answer

im pretty sure its 1140

Step-by-step explanation:

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Answer:

<h2> StartFraction 7 over 10 EndFraction x + 2 and one-half y + 6</h2>

Step-by-step explanation:

Given the expression 2(\frac{3x}{5}+2\frac{3y}{4}-\frac{x}{4}-1 \frac{1}{2}y+3)

To simplify the expression, we need to first collect the like terms of the functions in parentheses as shown;

= 2(\frac{3x}{5}-\frac{x}{4}-1 \frac{1}{2}y+2\frac{3}{4}y+3)\\= 2(\frac{3x}{5}-\frac{x}{4}- \frac{3}{2}y+\frac{11}{4}y+3)\\

Then we find the LCM of the resulting function

= 2(\frac{3x}{5}-\frac{x}{4}- \frac{3}{2}y+\frac{11}{4}y+3)\\= 2(\frac{12x-5x}{20} - (\frac{6y-11y}{4})+3)\\= 2(\frac{7x}{20}- (\frac{-5y}{4})+3 )\\= 2(\frac{7x}{20}+ \frac{5y}{4}+3 )\\= \frac{7x}{10} + \frac{5y}{2} +6\\=  \frac{7x}{10} + 2\frac{1}{2}y+6\\

The final expression gives the required answer

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3 years ago
Doctors can use radioactive chemicals to treat some forms of cancer. The half life of a certain chemical is 7 days. A patient re
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Answer:

5 millicuries

Step-by-step explanation:

Half life is 7 days which means it will be at 10 millicuries if we half that again for another 7 days then it will be 5.

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3 years ago
Choose the function that correctly identifies the transformation of f(x) = x2 shifted two units to the left and one unit down.
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D) g(x) = (x + 2)^2 - 1



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Read 2 more answers
F(x)=x^2+4x and g(x)= 2x+2, find f(5)+ g(6)
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F(5) = 5² +4*5=25+20 = 45
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f(5) + g(6)
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Rewrite the set M by listing its elements. Make sure to use the appropriate set notation
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We are given the rule for the set,
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There are only two elements.
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