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2 years ago

10

What is 3/5 + 2/3 in the simplest form

1 answer:

Blizzard [7]2 years ago

5 0

19/15 OR 1 and 4/5
First find a common denominator, which in this case is 15. So put 15 as each of the fractions denominators. Then multiply the numerator by what you multiplied to the denominator.

EXAMPLE

3/5 x 3/3 = 9/15
2/3 x 3/3 = 10/15 Ten plus nine =s 19. Keep the denominator the same. Turn into a mixed number by figuring out how many times 15 goes into 19 (once) and addng what's left. (4/5) You should get 1 and 4/5

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astra-53 [7]

D) is the correct one

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JulsSmile [24]

Answer: The price of each small box is $4.8 and the price of each large box is $10.8.

Step-by-step explanation:

Let x = Price of each small box, y= price of each large box.

As per given,

3x+2y= 36 ...(i)

4x+y= 30 ...(ii)

Multiplying 2 to (ii), we get

8x+2y =60...(iii)

Subtract (i) from (iii), we get

5x= 24

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From (ii)

4(4.8)+y= 30

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y= 10.8

Hence, the price of each small box is $4.8 and the price of each large box is $10.8.

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2 years ago

Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease

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Step-by-step explanation:

Since we have given that

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Rate at which population decreases is given by

$\frac{2}{3}$

Now,

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Second year is given by

$570000\times (\frac{1}{3})$

Third year is given by

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so, there is common ratio ,

it becomes geometric progression, as there is exponential decline.

so,

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$r=\frac{a_2}{a_1}=\frac{1}{3}$

number of terms = 6

Sum of terms will be given by

$S_n=\frac{a(1-r^n)}{(1-r)}$

We'll put this value in this formula,

$S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16$

So, there are approximately 853827 new cases in 6 years.

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Answer:

Step-by-step explanation:

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