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3 years ago

8th grade math! Please help. timed test

Mathematics

1 answer:

jeka57 [31]3 years ago

3 0

Answer: c

Step-by-step explanation:

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Pls solve this i need the answer

Mars2501 [29]

Answer: yuppie said he would not like the money for a week and he agreed that it was a joke that I would be happy with the money

Step-by-step explanation: hhhhhhhhh

3 0

3 years ago

Read 2 more answers

Question 5 of 10<br> Solve the rational equation:<br> 4x/x+5 = x/x+4

beks73 [17]

Answer:

$x = 0$ or $x = -\dfrac{11}{3}$

Step-by-step explanation:

I assume the denominators are x + 5 and x + 4 although that is not what you wrote.

$\dfrac{4x}{x+5} = \dfrac{x}{x+4}$

$(x + 4)(x + 5)\times \dfrac{4x}{x+5} = (x + 4)(x + 5) \times \dfrac{x}{x+4}$

$(x + 4)(4x) = (x + 5)(x)$

$4x^2 + 16x = x^2 + 5x$

$3x^2 + 11x = 0$

$x(3x + 11) = 0$

$x = 0$ or $3x + 11 = 0$

$x = 0$ or $3x = -11$

$x = 0$ or $x = -\dfrac{11}{3}$

5 0

2 years ago

A corporation must appoint a president, chief executive officer, chief operating officer and chief financial officer. It also ap

erik [133]

Answer:

Part a: The number of ways in which the candidates can be appointed on the executive posts are 11880.

Part b: The number of ways in which the candidates can be appointed as members of the planning committee are 495.

Step-by-step explanation:

As the complete question is not given a similar question is found online and is attached herewith.

Part a: Number of ways in which 12 candidates can be appointed for President, Chief Executive Officer, Chief Operating Officer and Chief Finance Officer.

Number of Candidates=12

Number of Posts=4

As the order is important the number of ways are identified using Permutations given as

$Number\,\ of\, ways=^{12}P_4\\Number\,\ of\, ways=\frac{12!}{(12-4)!}\\Number\,\ of\, ways=\frac{12!}{8!}\\Number\,\ of\, ways=11880$

So the number of ways in which the candidates can be appointed on the executive posts are 11880.

Part b: Number of ways in which 12 candidates can be appointed as members of the planning committee.

Number of Candidates=12

Number of Posts=4

As the order is not important the number of ways are identified using Combinations given as

$Number\,\ of\, ways=^{12}C_4\\Number\,\ of\, ways=\frac{12!}{(12-4)!4!}\\Number\,\ of\, ways=\frac{12!}{8!4!}\\Number\,\ of\, ways=495$

So the number of ways in which the candidates can be appointed as members of the planning committee are 495.

8 0

4 years ago

What is the value of y?<br> 3y+10/4=y

k0ka [10]

The answer is y=2. Hope this helps!

8 0

3 years ago

Need help answering this question

Dmitry_Shevchenko [17]

the median is 7.2 and its half way in between the 1st and 11th values

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4 years ago