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Alina [70]
2 years ago
6

Which sum is equal to 3 1/4+1 2/5?

Mathematics
2 answers:
AlexFokin [52]2 years ago
7 0

Answer:

\huge\boxed{\bf\: \frac{93}{20}=4.65}

Step-by-step explanation:

3 \frac { 1 } { 4 } + 1 \frac { 2 } { 5 }

Now,

3 \frac { 1 } { 4 } \\= \frac{4 * 3+1}{4}\\= \frac{13}{4}

Then,

1 \frac { 2 } { 5 }\\= \frac{1* 5+2}{5} \\= \frac{7}{5}

So,

3 \frac { 1 } { 4 } + 1 \frac { 2 } { 5 }\\= \frac{13}{4}+\frac{7}{5}\\ \\\mathrm{LCM = 20}\\\\= \frac{65}{20}+\frac{28}{20} \\=\boxed{\bf\: \frac{93}{20}=4.65}

\rule{150pt}{2pt}

Oksi-84 [34.3K]2 years ago
6 0

Answer:

5 3/20

Step-by-step explanation:

hope this helps

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Which Statement is true ?
elena55 [62]
F(-4)=G(-4) because when the two lines cross over the f line is at the -4 and same with G
7 0
2 years ago
The taxi and takeoff time for commercial jets is a random variable x with a mean of 8.4 minutes and a standard deviation of 3.5
Lorico [155]

Answer:

0.6672 is the required probability.            

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8.4 minutes

Standard Deviation, σ = 3.5 minutes

We are given that the distribution of distribution of taxi and takeoff times is a bell shaped distribution that is a normal distribution.

According to central limit theorem the sum measurement of n is normal with mean \mu and standard deviation \sigma\sqrt{n}

Sample size, n = 37

Standard Deviation =

=\sigma\times \sqrt{n} = 3.5\times \sqrt{37}=21.28

P(taxi and takeoff time will be less than 320 minutes)

P( \sum x < 320) = P( z < \displaystyle\frac{320 - 37(8.4)}{21.28}) = P(z < 0.4323)

Calculation the value from standard normal z table, we have,  

P(\sum x < 320) =0.6672 = 66.72\%

0.6672 is the probability  that for 37 jets on a given runway, total taxi and takeoff time will be less than 320 minutes.

7 0
3 years ago
Help please help me please help please please help me please
GarryVolchara [31]
The answer is no. the first equation is not right
8 0
3 years ago
Read 2 more answers
Solve 7x/3&lt;2<br> {X I X&lt;6/7}<br> {X I X&gt;6/7}<br> {X I X&lt;-14/3}<br> {X I X&gt;-14/3}
Vladimir79 [104]

Answer:

x<6/7

Step-by-step explanation:

7 0
2 years ago
Solve the equation. 2(3x – 5) = 8
stiks02 [169]

You would distibute first distribute

6x-10=8

add 10 on both sides

6x=18

Then you divide 6 on both sides to get x by itself so

x=3

4 0
3 years ago
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