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9966 [12]
3 years ago
14

There are 12 books on a shelf 5 of these books are new the rest are used what is the ratio of new books to used books

Mathematics
2 answers:
stich3 [128]3 years ago
8 0

Answer:

2.4

Step-by-step explanation:

also known as 12/5

the ratio of new books to be use is 12/5

tiny-mole [99]3 years ago
5 0

Answer:

5:7

Step-by-step explanation:

Basically you first find the amount of the books are the shelf knowing that you have 5 new books, you subtract the amount of new books from total books. And 5:7 can't be simplified any further making 5:7 the answer.

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suppose 5 men and 7 women are on a crowded elevator. at the next floor, four people get off the elevator. find the probability t
lubasha [3.4K]
The total number of arrangements for all of them to be women is:
C(7, 4) because the order does not matter; we'd still have the same arrangements.

Now, we can simplify this:
C(7, 4) = \frac{7!}{4!(7 - 4)!}
= \frac{5040}{4!3!}
= \frac{5040}{24 \cdot 6}
= \frac{5040}{144} = 35

Now, the total number of arrangements, without restriction, is simply: C(12, 4) because we don't care who we pick.

\text{P(4 women): } \frac{35}{495} = \frac{7}{99}
3 0
3 years ago
Doreen bought 2 liters of lemonade. How many millimeters of lemonade did Doreen buy? ​
MatroZZZ [7]

Answer:

Mr. Perkins changed the oil in his car. He bought. 6 liters of oil. He put 4,500 ml in his car.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Using the equation y = 3x – 5, what would the output be for an input of 2
Licemer1 [7]

Answer:

Step-by-step explanation:

y = 3x - 5.....input values are x and output values are y

so if ur input (x) is 2.....sub 2 in for x and find ur output (y)

y = 3x - 5

y = 3(2) - 5

y = 6 - 5

y = 1 <=== ur output value

3 0
3 years ago
Pauty went to the shopping mall at 11:30 A.M.
natka813 [3]
It’s 12:35, if you add 40+25 it equals 65, 60 minutes is an hour, subtract 65-60 and you’ll get 5. The hour brings you to 12:30 and then you add the remaining time (5 minutes), which will give you 12:35.
7 0
3 years ago
Solve the equation.<br> √x-4=8<br> The solution isx =
Black_prince [1.1K]

Answer:

x = 68

Step-by-step explanation:

Square both sides of the equation. This gives us:

x - 4 = 64

Then add 4 on both sides. This gives us:

x = 68

3 0
3 years ago
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