1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leviafan [203]
3 years ago
15

Plz help it is a probability question it is soo hard - I have tried and tried

Mathematics
1 answer:
zalisa [80]3 years ago
3 0
I think there's an easy way and a hard way to do this, and I think that the way
I'm about to describe is the easier way.

Probability = (number of successful outcomes)/(total number of possible outcomes)

<em>How many total pairs can be drawn from 8 total pens ?</em>
-- The first one drawn can be any one of 8 pens. For each of these . . .
-- The second one drawn can be any one of the remaining 7 .
-- Total number of ways of drawing a pair = (8 x 7) = 56 ways.
-- But there aren't 56 different different pairs. Whether you draw A and then B,
or B and then A, you wind up with the same pair.  There are 2 different ways to
draw each pair, so the 56 ways of drawing a pair only produces <u>28</u> different pairs.

<u>How many pairs are two of the same color ?</u>

<em>Possible number of blue pairs:</em>
The reasoning is exactly the same as calculating the TOTAL number of
pairs, as explained above.
With 5 blue pens, you can make <u>10</u> different pairs.
AB, AC, AD, AE, BC, BD, BE, CD, CE, and DE.

<em>Possible number of red pairs:</em>
The reasoning is exactly the same as calculating the TOTAL number of
pairs, as explained above.
With 3 red pens, you can make <u>3</u> different pairs.
AB, AC, and BC.

Total number of possible same-color pairs = 10 + 3 = 13

successes / total possible outcomes = 13/28 = <u>46.4</u>%  (rounded)
You might be interested in
Triangle ABC is an isosceles triangle. Sides AB and BC are congruent.
RideAnS [48]
Here you go! hope this helps!

5 0
3 years ago
What is the slope of the line?
spin [16.1K]

Answer: 2

Step-by-step explanation:

The slope of a line is \frac{rise}{run} (rise over run)

This means for every point you must go up/down to get your next point you divide it by every point you go right/left.

From one point to the next it goes up 2 (rise) and right 1 (run)

\frac{2}{1} = 2 so that is your slope

8 0
2 years ago
What is the value of 9/10÷1/5 ?
Anna35 [415]
The answer of 9/10 divided by 1/5 is 4.5
3 0
3 years ago
Read 2 more answers
HELP PLEASE !!!!!!!!
Paul [167]

Answer:

1. spends $80

2. Each garlic bread costs the same

3. Orders a pizza for 25.50 and two garlic breads

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help! functions operations. explain please
ValentinkaMS [17]

Answer:

a. 40

Step-by-step explanation:

Given

g(x)=2x and h(x)=x^2+4

(h\circ g)(x)=h(g(x))

(h\circ g)(x)=h(2x)

We plug in 2x into  h(x)=x^2+4.

(h\circ g)(x)=(2x)^2+4

(h\circ g)(x)=4x^2+4

We now substitute x=-3.

(h\circ g)(-3)=4(-3)^2+4

(h\circ g)(-3)=36+4=40

The correct choice is A.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A bank loaned out $19,000, part of it at the rate of 6% per year and the rest
    5·1 answer
  • You buy a container of cat litter for $12.25 and a bag of cat food for x dollars. The total purchase is $19.08, which includes 6
    9·1 answer
  • In science class, Sara needed 8 test tubes for 3 different experiments. The first experiment required 2 test tubes and the other
    5·1 answer
  • Determine the value of c that satisfies the given relation. 3c-1/3=c/2
    10·1 answer
  • Please help me solve 9 and 13
    7·1 answer
  • Bobby,Billy, and Barry smith are each one year apart in age. The sum of their ages is greater than the age of their father , who
    5·2 answers
  • What is x over three equals 9
    8·2 answers
  • Nina sold 25 orders of flowers from her shop on Valentine's Day. Of the 25, 14 of them
    6·1 answer
  • How much will he be paid in the first 2 years?
    8·2 answers
  • The Surface Area of a square pyramid is 3600 ft2. The slant height is 80 feet and the base is 20 feet. At most how many 1 foot c
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!