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2 years ago

Can someone help me please

Mathematics

1 answer:

Margaret [11]2 years ago

3 0

Answer:

-3x

Step-by-step explanation:

-3 is the coefficient and x is the variable.

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Reika [66]

I think it would be 88 square inches

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2 years ago

The table displays the number of students in each grade at Richmond High School who will or will not be attending the amusement

Pani-rosa [81]

Answer:

$P( eleventh\: \: |\: \: FT)= 0.2453 \\\\P( eleventh\: \: |\: \: FT)= 24.53\% \\\\$

Step-by-step explanation:

We are given a joint probability table.

There are four different graders in a school

1. Grade Ninth

2. Grade Tenth

3. Grade Eleventh

4. Grade Twelfth

Field trip refers to the students who will attending the amusement park field trip.

No field trip refers to the students who will not be attending the amusement park field trip.

We want to find out the probability that the selected student is an eleventh grader given that the student is going on a field trip.

$P( eleventh\: \: |\: \: FT)= \frac{P( eleventh\: \: and \: \: FT)}{P(FT)}$

Where P(eleventh and FT) is the probability of students who are in eleventh grade and will be going to field trip

$P(eleventh\: and \: FT) = \frac{13}{92} \\\\P(eleventh \: and \: FT) = 0.1413$

Where P(FT) is the probability of students who will be going to field trip

$P(FT) = \frac{12}{92} + \frac{9}{92} + \frac{13}{92} + \frac{19}{92}\\\\P(FT) = 0.1304 + 0.0978 + 0.1413 + 0.2065\\\\P(FT) = 0.576 \\\\$

So the required probability is

$P( eleventh\: \: |\: \: FT)= \frac{P( eleventh\: \: and \: \: FT)}{P(FT)} \\\\P( eleventh\: \: |\: \: FT)= \frac{0.1413}{0.576} \\\\P( eleventh\: \: |\: \: FT)= 0.2453 \\\\P( eleventh\: \: |\: \: FT)= 24.53\% \\\\$

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2 years ago

Which expression is equivalent to 2x - 10y + 9y - 11x ?

elena-s [515]

Answer:

-9x - y

Step-by-step explanation:

Combine like terms. That is, combine all the x terms and then, separately, combine all the y terms.

2x - 10y + 9y - 11x = -9x - y (answer)

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2 years ago

How many minutes would you have to exercise each day to have a resting heart rate of 60 beats per minute?

Svetradugi [14.3K]

Answer:

i think 2-3 min.

Step-by-step explanation: i wish it's help u

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2 years ago

What is the length of RT?

svetoff [14.1K]

10/15 x X/24 cross multiply and the answer is 16

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2 years ago

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Can someone help me please ​

Can someone help me please