Jason, Erik, and Jamie are friends in art class. The teacher randomly chooses 2 of the 21 students in the class to work together on a project. What is the probability that two of these three friends will be chosen?

Answers

Answer 1

Answer: Now THAT's a problem !
Lemme at it ! Outa my way !

The probability of picking two of the friends to work together is

   (the number of pairs of friends there are)
divided by
   (the total number of pairs that can be pulled out of 21 students).

The number of pairs of friends there are is (3 x 2) / 2 = 3 pairs.

The total number of pairs that can be selected out of 21 students is

   (21 x 20) / 2 = 210 pairs.

The probability that the pair selected will be two of the friends is

   3 / 210 = 1/70 = about 1.43 % (rounded)

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What is standard deviation?

Answers

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jamal finished 5/6 of his homework. Margaret finished 3/4 of her homework, and Steve finished 10/12 of his homework. Which two students finished the same amount of homework?

Answers

Answer:

Jamal and Steve

Step-by-step explanation:

we have that

Jamal finished $(5)/(6)$ of his homework

Margaret finished $(3)/(4)$ of his homework

Steve finished $(10)/(12)$ of his homework

Simplify Steve's homework ------> $(10)/(12)$

Divide by $2$ both numerator and denominator

$(10)/(12)=((10/2))/((12/2))=(5)/(6)$

therefore

Steve's homework=Jamal's homework

Solve |3x + 9| + 6 = 6

Answers

Answer:

x = -3

Step-by-step explanation:

|3x + 9| + 6 = 6

|3x + 9| = 6 - 6

|3x + 9| = 0

3x + 9 = 0

3x = - 9

x = -3

How do you convert an imprperfraction into a mixed number.

Answers

Just divide the two numbers, find the quotient, put it as the whole number part, than use the remainder and put it over the original denominator, and that will be your fraction part.

ex. 17/4 --> 17/4 = 4 remainder 1. Your answer is 4 1/4

you divide the numerator by the denominator and then you keep the left tover fraction with the whole number. There now u know how to change an improperfaction to a mixed number

Can u please answer my question

Answers

1st Step:We should first change them all to have a common denominator.
2nd Step:We should find the least common multiple
4×1=4 8×1=8 16×1=16
4×2=8 8×2=16
4×3=12
4×4=16
LCM is 16

$(1*4)/(4*4)$ + $(1*2)/(8*2)$ + $(1)/(16)$
$(4)/(16)$ + $(2)/(16)$ + $(1)/(16)$
$(7)/(16)$

$(7)/(16)$ is the fraction of the page that is used in total.

turn the denominators into the same number by multipling them
same to top as to bottom so
1/4 =4/16
1/8= 2/16
1/16 stays the same

add together to get 7/16

Is 3 to the 100th power divided by 3 to the 99th power greater than, less than, or equal to 3?

Answers

$(3^(100) )/(3^(99) )$ ? 3

whenever you divide 2 numbers that are the same and they both have exponent, you basically subract the 2 exponents from each other.

$( 3^(100))/( 3^(99)) = 3^(100-99) = 3^(1) =3$

the answer is $( 3^(100))/( 3^(99))=3$

I dont think I would know that one. Lol It did not make much sense.

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