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2 years ago

Is the ordered pair, in the form (x, y), a solution of the equation below?

Mathematics

1 answer:

Snezhnost [94]2 years ago

8 0

True, because (x) times one is always going to be (x).

So, this will be
1.2(1) + 3.6(1) =4.8

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Ben mowed 5/6 of his lawn in one hour. John mowed 4/6 of his lawn in one hour. Who mowed less of his lawn in one hour

Anika [276]

Answer:

John mowed less of his lawn in one hour because 4 is less then 5.

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3 years ago

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A group of 8 friends (5 girls and 3 boys) plans to watch a movie, but they have only 5 tickets. If they randomly decide who will

Eddi Din [679]

Answer:

D. 0.821

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The combinations formula is important to solve this question:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes

The order is not important. For example, Elisa, Laura and Roze is the same outcome as Roze, Elisa and Laura. This is why we use the combinations formula.

At least 3 girls.

3 girls

3 girls from a set of 5 and 2 boys from a set of 3. So

$C_{5,3}*C_{3,2} = 30$

4 girls

4 girls from a set of 5 and 1 boy from a set of 3. So

$C_{5,4}*C_{3,1} = 15$

5 girls

5 girls from a set of 5

$C_{5,5} = 1$

$D = 30+15+1 = 46$

Total outcomes

5 from a set of 8. So

$T = C_{8,5} = 56$

Probability

$P = \frac{D}{T} = \frac{46}{56} = 0.821$

So the correct answer is:

D. 0.821

6 0

2 years ago

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HELP QUICK PLEASE! THANKS

Helen [10]

Seven more than a number

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3 years ago

A laptop computer is purchased for $2000. After each year, the resale value decreases by 25%. What will the resale value be afte

wel

Answer:

2000? ... assume $2000

Resale Value = $2000*(1 - 0.25)t/yr

where: t = number of year after purchase

at t = 3 yr

Resale Value = $2000*(1 - 0.25)3 = $843.75

checking: at t = 0 $2000 (purchase price)

at t = 1 yr $2000 - 0.25*$2000 = $2000 - $500 = $1500

at t = 2 yr $1500 - 0.25*$1500 = $1500 - $375 = $1125

at t = 3 yr $1125 - 0.25*$1125 = $1125 - $281.25 = $843.75

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3 years ago

What is the answer to 7y 5y-5y?

Katena32 [7]

-17 would be the answer to this problem

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3 years ago