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3 years ago

PROBABILITY QUESTION!!! PLEASE HELP

Mathematics

1 answer:

Flura [38]3 years ago

6 0

Answer:

Step-by-step explanation:

the probability that at least one envelope is a yellow envelope is 16/21

Step-by-step explanation:

The probability that at least one envelope is a yellow envelope is P(Y);

P(Y) = 1 - P(Y)'

P(Y)' is the probability that no envelope is a yellow envelope.

Given;

red envelope = 1

blue envelopes = 3

green envelopes = 2

yellow envelopes = 3

Total = 9

Number of non-yellow envelope = 9 -3 = 6(6 envelope are not yellow)

P(Y)' = P1 × P2 × P3

there is no replacement;

P(Y)' = 6/9 × 5/8 × 4/7

P(Y)' = 5/21

From equation 1;

P(Y) = 1 - 5/21

P(Y) = 16/21

the probability that at least one envelope is a yellow envelope is 16/21.

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What is the sign of s^67/t^9 when s < 0 and t > 0?

Sphinxa [80]

Answer:

negative

Step-by-step explanation:

The sign of a product or quotient cannot be determined by the positive number (t), so we can ignore it. The sign of the expression will be negative if and only if there are an odd number of negative factors.

Here, there are 67 (an odd number) negative factors, so the expression will be negative.

4 0

1 year ago

Read 2 more answers

W much

Bezzdna [24]

Jerome bought C. $4\frac{7}{8}$ pounds of candy.

Step-by-step explanation:

Step 1:

First, we must convert the mixed fractions into improper fractions. To do that we multiply the whole number with the denominator and add with it the numerator while the denominator remains the same.

To convert this fraction $1\frac{1}{2} = \frac{(1)(2)+1}{2} =\frac{3}{2} .$

To convert this fraction $2\frac{3}{4} = \frac{(2)(4)+3}{4} =\frac{11}{4} .$

So Jerome bought $\frac{3}{2}$ pounds of jelly beans, $\frac{5}{8}$ pounds of gumballs and $\frac{11}{4}$ pounds of chocolate.

Step 2:

We add all the values to determine the total candy bought.

$\frac{3}{2} +\frac{5}{8} + \frac{11}{4} = \frac{(4(3)+1(5)+2(11))}{8} .$

$\frac{(4(3)+1(5)+2(11))}{8} = \frac{39}{8} .$

$\frac{39}{8}$ can also be written as $4\frac{7}{8}$ .

So Jerome bought $4\frac{7}{8}$ pounds of candy which is option C.

6 0

4 years ago

Solve for b . -9 b = 27 b =

saul85 [17]

Final Answer: $b = -3$

Steps/Reasons/Explanation:

Question: Solve for $b$ . $-9 b = 27$ . $b$ = ?

Step 1: Divide both sides by $-9$ .

$b = -\frac{27}{9}$

Step 2: Simplify $\frac{27}{9}$ to $3$ .

$b = -3$

~I hope I helped you :)~

5 0

3 years ago

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Graph the six terms of a finite series where a1 = -3 and r = 1.5.

zavuch27 [327]

A1 is the 1st term
r is the difference, they can say "r" or "d" for the difference

1st a1 is the first term = -3
2nd "r" is the difference between each consecutive terms (coming after each other) = 1.5
the rule to get any term of the sequence as we add 1.5 each time is --> a1+(n-1)*d
a1 --> 1st term , n --> order of the term u want whether 2nd, 3rd , 25th
d --> difference
so to get the 2nd--> -3+(2-1)*1.5= -1.5
to get the 3rd --> -3 +(3-1)*1.5 = 0
and so on

4 0

4 years ago

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A photographer will arrange 6 people of 6 different heights for a photograph by placing them in two rows of three so that each p

Svetllana [295]

Answer:5

Step-by-step explanation:

This can be solved by fixing the position of shortest and tallest person in the first and second row respectively .

Rest we have four person remaining and we have to arrange 4 person in 4 positions therefore we can do it in

$^4P_2$ ways out of which we have to exclude the case when both the tall persons is in the first row and short person in second rows

Therefore a total of 6-1 ways is possible

3 0

4 years ago