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3 years ago

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Mathematics

1 answer:

stellarik [79]3 years ago

6 0

Step-by-step explanation:

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How I can solve this integral ∫ dx / akar 25 - 16x^2 ? I really need your help, thank you.

GREYUIT [131]

T ∫ 1/√(1 - x²) dx = arcsin(x)

 ∫ 1/√(1 - x²/a) dx = √a arcsin(x/√a) 

So pull a factor of 5 out of the square root to get 
1/5 ∫ 1/√(1 - 16 x²/25) dx 
= 1/4 arcsin(4 x/5)

4 0

4 years ago

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Mrs. Kato has 6 bags of dried beans and a 2-pound bag of rice in one shopping bag. In another shopping bag she has a 5-pound bag

Serjik [45]

Given:

Mrs. Kato has 6 bags of dried beans and a 2-pound bag of rice in one shopping bag.

In another shopping bag she has a 5-pound bag of flour.

The two shopping bags weigh the same amount.

To find:

The weight of each bag of dried beans.

Solution:

Let x be the weight of each bag of dried beans.

So, weight of 6 bags of dried beans = 6x.

According to the question,

Weight of first bag = (6x + 2) pounds

Weight of second bag = 5 pounds

The two shopping bags weigh the same amount. So,

$6x+2=5$

$6x=5-2$

$6x=3$

Divide both sides by 6.

$x=\dfrac{3}{6}$

$x=0.5$

Therefore, the weight of each bag of dried beans is 0.5 pounds.

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3 years ago

What is 4.738rounded to the nearest thousandth? (Points : 1) 4.73 4.74 4.738 4.739

Ugo [173]

The answer is 4.74 because 9 is the thousands place and the one in front of it the hundredths goes up 5 and up or 4 and below hope this helps

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3 years ago

Factor completely 49x^2 - 81 (7x+9)^2 (7x-9)^2 (7x+9)(7x-9) 7x-9

AURORKA [14]

Answer:

Step-by-step explanation:

$x^{2} -y^{2} =(x+y)(x-y)\\49x^{2}-81=(7{x})^2-{9}^2=(7x+9)(7x-9)$

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4 years ago

2 1/3 times 3 1/2 As a mixed number

Sedbober [7]

Answer:

8 1/6

Step-by-step explanation:

8 1/6 is the answer. Hope this helps!

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3 years ago

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