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Vedmedyk [2.9K]
2 years ago
15

Your bookcase contains 3 history book, 5 psychology books, 2 mystery novels and 5 sci-fi books. Assuming each book has an equal

chance of getting chosen, what is the probability of selecting a psychology book at random
Mathematics
1 answer:
dlinn [17]2 years ago
8 0

5/15

Step-by-step explanation:

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A toy previously sold for $10.00 now sells for 75 cents. Calculate the decrease in the value of the toy
kramer
The decrease in the value of the toy is $9.25 if you subtract $ 0.75 from $10.00 then you get $9.25 so it's $9.25 cheaper
7 0
3 years ago
ANSWER THIS PLZZZZZZ
Citrus2011 [14]
I would say it’s B because out of ten it makes the mean 1 point higher
6 0
3 years ago
A standard American Eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. Assuming the weights of sta
lions [1.4K]

Answer:

Approximately 24–36 pounds

Step-by-step explanation:

Given:

Weight of standard American Eskimo dog has mean= 30 pounds

A standard deviation= 2 pounds

For 99.7% of the dogs according to normal distribution would lie between 3 standard deviations on either side of the mean.

i.e. lower bound= Mean- 3 (standard deviation)

= 30-3(2)

=30-6

=24

Upper bound = Mean +3 (standard deviation)

= 30+3(2)

=30+6

=36

Hence the range of weights : 24-36 pounds

correct answer Approximately 24–36 pounds!

4 0
3 years ago
Solve for and in the following simultaneous equations below; 5x−4y=8 and 2x+y=11.
lorasvet [3.4K]

Answer:

x=4 and y=3

Step-by-step explanation:

put one of the equations in slope form and solve

7 0
3 years ago
Read 2 more answers
Which equation represents this sentence? 1/3 times the difference of a number and 4 is 1/6. 1/3x−4=16 1/3(x−4)=1/6 4−1/3x=1/6 1/
pychu [463]

Answer:

(1/3)(n - 4) = 1/6

Step-by-step explanation:

Let the number be n.  Then the given phrase can be written symbolically as (1/3)(n - 4) = 1/6. This is the second answer choice.

8 0
2 years ago
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