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motikmotik
3 years ago
8

Please help with this question ​

Mathematics
1 answer:
zalisa [80]3 years ago
6 0

Answer:

4cm^2

Step-by-step explanation:

First we need to find the length of the height of the triangle using Pythagoras:

a^2+b^2=c^2 (Substitute in what we have)

a^2+3√2(^2)=2√5(^2)   =   a^2 + 18 = 20 -> 20-18=2 √2=BD

Now we can find the area:

AD+DC= 3√2 + √2 = 4√2 x √2 = 8/2 = 4

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Question is based on Fraction
Genrish500 [490]

9514 1404 393

Answer:

  12,00,000 rupees

Step-by-step explanation:

The fraction originally intended for each son was ...

  (1/3)(1 -2/5) = 1/3(3/5) = 1/5

The fraction each son actually received was ...

  (1 -1/6)(1/5) = (5/6)(1/5) = 1/6

The difference in these amounts as a fraction of the original distribution is ...

  1/5 - 1/6 = (6/30) -(5/30) = 1/30

Then the original distribution is 30 times this difference:

  30×40000 rupees = 12,00,000 rupees

_____

<em>Additional comment</em>

Originally-intended distribution (rupees):

  • wife: 4,80,000
  • each son: 2,40,000

Actual distribution:

  • brother: 2,00,000
  • wife: 4,00,000
  • each son: 2,00,000

1,00,000 = 1 lakh

6 0
3 years ago
Lin is reading a 47 page book . She read the first 20 pages in 35 minutes. If she keeps reading at the same pace, how long will
Damm [24]

Answer:

It will take her 1 hour, 22 minutes, and 15 seconds.

Step-by-step explanation:

We can find how long it takes her to read one page if we take 35 divided by 20.

35/20 equals 1.75, which means it takes Lin 1.75 minutes to read 1 page.

If we multiple 1.75 times the 47 pages of the book, we get 82.25.

But, this does not mean that it takes Lin 82 minutes and 25 seconds to read the book. Since there are only 60 seconds in one minute, we must convert the .25 to seconds.

.25 is equivalent to 1/4, and 1/4 of 60 seconds is 15 seconds.

It would also look like this  \frac{1}{4} *\frac{60}{1} = \frac{60}{4} = 15

So it took Lin 82 minutes and 15 seconds to read the book.

Or it took her 1 hour, 22 minutes, and 15 seconds to read the book.

6 0
2 years ago
During a catered lunch, an average of 4 cups of tea are poured per minute. The lunch will last 2 hours. How many gallons of tea
Greeley [361]

Answer:

Step-by-step explanation:

4 cups of tea per minute.......lunch lasts 2 hrs.....there are 120 minutes in 2 hrs...so in 2 hrs, there will be (4 * 120) = 480 cups

and if there is 16 cups in 1 gallon, the caterer needs to bring :

480 / 16 = 30 gallons <==

6 0
3 years ago
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The most expensive type of life insurance
natta225 [31]
Whole life insurance
6 0
2 years ago
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Is 2/3(3/4x-3/2) equal to 1/2x -1
ziro4ka [17]

Answer:

Step-by-step explanation:

that would be the anwer

6 0
3 years ago
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