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3 years ago

Can someone help me understand how you add fractions? Like step by step like for an a example 3 3/5 + 2 1/4=?

Mathematics

1 answer:

Vikentia [17]3 years ago

6 0

Answer:

Step-by-step explanation: Alright adding fractions here we go.

3 3/5 + 2 1/4

First add up the whole numbers. 3+2=5

Then adding the mix numbers, what you need to do is find a common demoninator. What do 5 and 4 both go into? Well 20, so we multiply each demoinator to get 20.

3/5+1/4

12/20 + 5/20

17/20

Answer is 5 17/20.

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Using the following set of data, calculate the lower quartile, the upper quartile, and the interquartile range.20, 22, 25, 28, 2

madreJ [45]

Answer:

The lower quartile is 23.5

The upper quartile is 32.5

The interquartile range is 9

Step-by-step explanation:

The given data set is 20, 22, 25, 28, 29, 30, 32, 33, 34.

The data set is already sorted in ascending order.

The middle number of this data set is called the median.

Therefore the median is 29.

The median divides the data set into two halves.

The lower half is

20, 22, 25, 28

The median of the lower half is the lower quartile.

$Q_1 = \frac{22 + 25}{2} = \frac{47}{2} = 23.5$

The upper half is 30, 32, 33, 34

The median of the upper half is the upper quartile.

$Q_3= \frac{33 + 32}{2} = 32.5$

The interquartile range is given by

$IQR=Q_3-Q_1 \\ IQR=32.5 - 23.5 = 9$

7 0

4 years ago

Cynthia invested $12,000 in a savings account. If the interest rate is 6%, how much will be in the account in 10 years by compou

sattari [20]

Answer:

In 10 years she'll have approximately $21865.4 in her account.

Step-by-step explanation:

When an amount is compounded continuously its value over time is given by the following expression:

$v(t) = v(0)*e^{rt}$

Applying data from the problem gives us:

$v(10) = 12000*e^{(0.06*10)}\\v(10) = 12000*e^{0.6}\\v(10) = 21865.4$

In 10 years she'll have approximately $21865.4 in her account.

6 0

3 years ago

Read 2 more answers

What are the factors of x^2+3x-4

Sveta_85 [38]

Answer:

(x-1) (x+4)

Step-by-step explanation:

x^2 +3x-4

What 2 terms multiply to -4 and add to 3

-1*4 = -4

-1+4 = 3

(x-1) (x+4)

5 0

3 years ago

Wholesome Pizza surveyed a random sample of 404040 Trinity Food Festival attendees about their favorite type of pizza. Of the at

ale4655 [162]

For this case the first thing we should do is find the percentage of people surveyed who said that pizza pizza was their favorite type of pizza.
We have then:
$x = (21/40) * (100)

x = 52.5%$
We are now looking for 52.5% of 1600 people.
For this, we make the following rule of three:
1600 ----------> 100%
x ---------------> 52.5%
Clearing the value of x we have:
$x = (52.5 / 100) * (1600)

x = 840$
Answer:
the most reasonable estimate for the number of Trinity Food Festival attendees whose favorite type of pizza is sausage pizza is:
x = 840

6 0

3 years ago

Read 2 more answers

A customer buys 17.01 in gas and requests one five dollar [$5] lottery ticket, two one dollar [$1] lottery tickets, and one [$3]

Alik [6]

17.01+5+2+3= 27.01 (total expense)
100-27.01= 72.99 (change)
5+2= 7 (total winnings)
72.99+7.00= 79.99 (total change).

4 0

4 years ago