1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
guajiro [1.7K]
3 years ago
6

What is the sum of 1 2/5 and 5 3/4​

Mathematics
2 answers:
Marizza181 [45]3 years ago
6 0

Answer:

<h2>\boxed{7 \frac{3}{20} }</h2>

Step-by-step explanation:

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

Add the whole numbers and fractional parts of the mixed numbers separately

\mathrm{ = (1 + 5) + ( \frac{2}{5}  +  \frac{3}{4} })

Add the numbers

\mathrm{=6 + ( \frac{2}{5}  +  \frac{3}{4} )}

Add the fractions

\mathrm{=6 +  (\frac{2 \times 4 + 3 - 5}{20} )}

\mathrm{=6 +  \frac{23}{20} }

Convert the improper fractions into a mixed number

\mathrm{=6 + 1 \frac{3}{20} }

Write the mixed number as a sum of the whole number and the fractional part

\mathrm {= 6 + 1 +  \frac{3}{20} }

Add the numbers

\mathrm{ = 7 +  \frac{3}{20} }

Write the sum of the whole number and the fraction as a mixed number

\mathrm{ = 7 \frac{3}{20} }

Hope I helped

Best regards!

Art [367]3 years ago
4 0

Answer:

7\frac{3}{20}

Step-by-step explanation:

<em>Hey there!</em>

Well to add this we need to pu it in improper form.

7/5 + 23/4

Now we need to find the LCM.

5 - 5, 10, 15, 20, 25, 30

4 - 4, 8, 12, 16, 20, 24, 28

So the LCD is 20.

Now we need to change the 5 and 4 to 20.

5*4 = 20

7*4 = 28

<u>28/20</u>

4*5=20

23*5=115

<u>115/20</u>

Now we can add 28 and 115,

= 143/20

Simplified

7 3/20

<em>Hope this helps :)</em>

You might be interested in
About 16 % of the population of a large country is allergic to pollen. If two people are randomly selected, what is the probabil
Vinvika [58]

Answer:

(a) 0.0256

(b) 0.2944

Step-by-step explanation:

For solving this exercise we can apply the binomial distribution. The equation that give as the probability is:

P(x,n,p)=(nCx)*p^{x} *(1-p)^{n-x}

Where n is the number of identical events, p is the probability that the event has a success and x is the number of success in the n identical events.

Additionally, nCx is calculated as:

nCx=\frac{n!}{x!(n-x)!}

So, in this case we have 2 identical events because we are going to select two people randomly and the probability p of success is the probability that the person is allergic to pollen and this probability is 16%.

Then, for the first case, x is 2 because their are asking for the probability that both are allergic to pollen. Replacing the values of x, n and p we get:

P(2,2,0.16)=(2C2)*0.16^{2} *(1-0.16)^{2-2}

P(2,2,0.16)=0.0256

For the second case, their are asking for the probability that at least one is allergic to pollen, that means that we need to sum the probability that both are allergic to pollen with the probability that just one is allergic to pollen.

Using the same equation to calculate P(1,2,0.16) we get:

P(1,2,0.16)=(2C1)*0.16^{1} *(1-0.16)^{2-1}

P(1,2,0.16)=0.2688

So, the probability that at least one person is allergic to pollen is 0.2944 and it is calculated as:

0.0256 + 0.2688 = 0.2944

7 0
3 years ago
If QT is 9 and TP is 8 Find the length of the following:<br><br>RP<br>RT<br>RS​
anyanavicka [17]

Answer:

i. RP = 17

ii. RT = 15

iii. RS = 30

Step-by-step explanation:

Given that; QT = 9 and TP = 8.

From the diagram, join R to P. Thus RP = QP (radius of the circle)

                        RP = QT + TP

                             = 9 + 8

                         RP = 17

Applying Pythagoras theorem to triangle TRP;

             RT = \sqrt{(RP)^{2} - (TP)^{2} }

                  = \sqrt{17^{2} - 8^{2} }

                 = \sqrt{225}

                 = 15

∴           RT = 15

But, RT = TS = 15.

So that;

       RS = 15 + 15

             = 30

        RS = 30

Therefore;  RP = 17, RT = 15 and RS = 30.

6 0
3 years ago
Choose the two triangles that are similar
levacccp [35]

Answer:triangles 20 12 28 and15 9 21

Step-by-step explanation:

6 0
3 years ago
It’s all yours point and brainlist just get it right
ser-zykov [4K]
The answer has to be 144 since it is the only one smaller than 180
4 0
2 years ago
Read 2 more answers
Barbara wants to buy some glittery heart-shaped beads to make friendship bracelets. The beads she wants come in a small pack wit
AleksAgata [21]

Answer:

I feel u

Step-by-step explanation:u need help too

5 0
3 years ago
Other questions:
  • Students in 7th and 8th grade were asked the types of movies they prefer. The results of the survey are shown in the two-way tab
    6·2 answers
  • Evaluate the expression(1/3+9)×(8-3)
    12·2 answers
  • What is a rule that relates days to the amount earned? It's not Multiply by 9 because I put that and I got it wrong. So it's eit
    9·1 answer
  • What is the GCF of 12 and 48​
    7·2 answers
  • If AB = 2x+7 and BC = 5x-4 and B is the midpoint of AC, what is the length of AC?
    10·1 answer
  • HELP WILL GIVE BRAINLIEST!!!!<br><br> How many 1/2 cups are in 3/4 cups?
    9·1 answer
  • Briana has 4 1/2 cups of oats. She uses 2 1/4 cups of oats to make oatmeal- raisins cookies, then borrow 1 cup of oats from her
    12·1 answer
  • PLZ HELP I NEED TO TURN THIS IN IN 10 mins
    15·2 answers
  • A satellite is in an approximately circular orbit 36,000 kilometers from Earth’s surface. The radius of Earth is about 6400 kilo
    7·1 answer
  • -6×4-64÷(-3.3+1.7)<br>Please help​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!