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2 years ago

How do I turn mix numbers into Improper fraction

2 answers:

6 0

Ok, lets do an example of how to do one. Lets say you have:

3 12/15.
12 is your numerator and 15 is your denominator (numerator is the number on top, denominator is the number on bottom). If it takes 15/15 pieces to make the number 1, then for the number three, there must be 15 parts for every 1 in the number three, so:

1= 15/15.
15 15 15
1+1+1= ---+--+---
15 15 15
so to make 3 12/15 into a improper fraction we must do:

15 15 15 12
---+--+---+---=?
15 15 15 15

remember when adding fractions, you only add the numerators, so:

15 15 15 12 57
---+--+---+---= ---
15 15 15 15 15

57
--- would be your improper fraction.
15

If you need me to explain anything else or you just simply have any questions, feel free to ask me below. Also please mark this answer as the brainliest if it wouldn't be any trouble :).

Daniel [21]2 years ago

4 0

You multiply the whole number and the denominator ( the bottom number in the fraction) and then add the answer of that to the numerator. Hope that helps! :)

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marta [7]

X=13

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5 0

2 years ago

What is the value of -2/5 / 3/4?

Sveta_85 [38]

Answer:

-8/15

Step-by-step explanation:

7 0

2 years ago

A five-digit number starts with a number between 4-9 in the first position, with no restrictions on the remaining 4 digits. a

Maurinko [17]

Answer:

(a) $Pr = 0.3024$

(b) $Pr = 0.6976$

Step-by-step explanation:

Given

$Start = \{5,6,7,8\}$ i.e. between 4 and 9

$n(Start) =4$

$Digits = 5$

Solving (a): Probability that each of the 5 digit are different

Since there is no restriction;

The total possible selection is as follows:

$First\ digit = 4$ (i.e. any of the 4 start digits)

$Second\ digit = 10\\$ (i.e. any of the 10 digits 0 - 9)

$Third\ digit = 10$ (i.e. any of the 10 digits 0 - 9)

$Fourth\ digit = 10$ (i.e. any of the 10 digits 0 - 9)

$Fifth\ digit = 10$ (i.e. any of the 10 digits 0 - 9)

So, the total is:

$Total = 4 * 10 * 10 * 10 * 10$

$Total = 40000$

For selection that all digits are different, the selection is:

$First\ digit = 4$ (i.e. any of the 4 start digits)

$Second\ digit = 9$ (i.e. any of the remaining 9)

$Third\ digit = 8$ (i.e. any of the remaining 8)

$Fourth\ digit = 7$ (i.e. any of the remaining 7)

$Fifth\ digit = 6$ (i.e. any of the remaining 6)

So:

$Selection =4 * 9 * 8 * 7 * 6$

$Selection =12096$

So, the probability is:

$Pr = \frac{Selection}{Total}$

$Pr = \frac{12096}{40000}$

$Pr = 0.3024$

Solving (b): At least 1 repeated digit

The probability calculated in (a) is the all digits are different i.e. P(None)

So, using laws of complement

We have:

$P(At\ least\ 1) = 1 - P(None)$

So, we have:

$Pr= 1 - 0.3024$

$Pr = 0.6976$

Solving (c): An expression to model the probability.

Using (a) as a point of reference, we have;

$Pr = \frac{Selection}{Total}$

Where

$Selection =4 * 9 * 8 * 7 * 6$ ---- for selection of 5 i.e. n = 5

$Total = 4 * 10 * 10 * 10 * 10$

$Selection =4 * 9 * 8 * 7 * 6$

This can be rewritten as:

$Selection = 4 * ^9P_4$

4 can be expressed as: 5 - 1

So, we have:

$Selection = (5-1) *^9P_{5-1}$

Substitute n for 5

$Selection = (n-1) *^9P_{n-1}$

$Selection = (n-1)^9P_{n-1}$

$Total = 4 * 10 * 10 * 10 * 10$

This can be rewritten as:

$Total = 4 * 10^4$

$Total = (5-1) * 10^{5-1}$

$Total = (n-1) * 10^{n-1}$

$Total = (n-1) 10^{n-1}$

So, the expression is:

$Pr = \frac{(n-1)^9P_{n-1}}{(n-1)10^{n-1}}$

$Pr = \frac{^9P_{n-1}}{10^{n-1}}$

Where n represents the digit number

5 0

3 years ago

A ski area has a high-speed lift that can move 2,400 skiers to the top of the mountain each hour.

jeyben [28]

Answer:

a. h2400 b.33600 c.1.5

Step-by-step explanation:

2400 skiers per hour

then in h hours h x 2400 skiers

in 14 hours 14x2400=33600 skiers

to move 3600 skiers we need 3600/2400=1.5 hours

4 0

3 years ago

..Urgent.. 600 students attend Ridgewood Junior High School. 10% of students bring their lunch to school everyday. How many stud

zysi [14]

Answer:

Number of student bring their lunch = 60

Step-by-step explanation:

Given:

Total number of student = 600

Student bring their lunch = 10%

Find:

Number of student bring their lunch

Computation:

Number of student bring their lunch = Total number of student x Student bring their lunch

Number of student bring their lunch = 600 x 10%

Number of student bring their lunch = 60

3 0

2 years ago