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3 years ago

9

Estimate the answer by rounding the divisor to the nearest whole number. 196,900÷4.084

2 answers:

Daniel [21]3 years ago

6 0

9514 1404 393

Answer:

49,000

Step-by-step explanation:

The divisor is 4.084. When it is rounded to the nearest whole number, it is 4.

Then the division problem becomes ...

196,900/4 ≈ 49,000 . . . . . . showing just 2 significant digits for the estimate

__

The point of an estimate is to obtain an approximate answer that is within a few percent of the actual answer. Here, rounding 4.084 to 4.000 gives an error on the order of .084/4 ≈ 2.1%. Because we're using a smaller divisor, the value we obtain for our estimate will be too large by about that amount.

Often, an estimate that has 1 or 2 significant digits is "close enough" for the purpose. Because a change in our estimated value of 1 in the least significant digit is a change of about 2%, we judge this estimate to be "close enough", given the rounding we did to start. Keeping 3 significant digits in our estimate would claim an accuracy that it does not have.

Ket [755]3 years ago

3 0

Answer:

48,213

Step-by-step explanation:

The full answer is 48,212.5367, but because there is a 5 in the tenths place you round the whole number up

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denis-greek [22]

Answer:

<u>______________________________________________________</u>

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For any right angled triangle with one angle α ,

$\cos (90 - \alpha ) = \sin \alpha$ or $\sin(90 - \alpha ) = \cos\alpha$

$cosec \: (90 - \alpha ) = \sec\alpha$ or $\sec(90 - \alpha ) = cosec\:\alpha$

<u>SOME GENERAL TRIGNOMETRIC FORMULAS :-</u>

<u></u> $\sin \alpha = \frac{1}{cosec \: \alpha }$ or $cosec \: \alpha = \frac{1}{\sin \alpha }$

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<u>______________________________________________________</u>

Now , lets come to the question.

In a right angled triangle , let one angle be α (in place of theta) .

So , lets solve L.H.S.

$\cos (90 - \alpha ) \times cosec(90 - \alpha )$

$=> sin\alpha \times \sec\alpha$

$=> \sin\alpha \times \frac{1}{\cos\alpha }$

$=> \frac{\sin\alpha }{\cos\alpha }$

$=> \tan\alpha$ = R.H.S.

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3 years ago

Solve for t. 19=1/2gt2

inysia [295]

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Multiply each side by 2 :

38 = g t²

Divide each side by ' g ' :

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Square root each side :

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4 years ago

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kolezko [41]

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Vesnalui [34]

Answer:

Step-by-step explanation:

Now sum of infinite series is

a

1

−

r

and if first three term are removed, fourth term becomes the first term i.e. first term becomes

a

r

3

and

sum of infinite series becomes

a

r

3

1

−

r

As

a

1

−

r

=

27

×

a

r

3

1

−

r

27

r

3

=

1

or

r

3

=

1

27

and

r

=

1

3

and hence

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1

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3 years ago

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shepuryov [24]

Answer:

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I'm not sure if this is what you're looking for, but it's what I got.

Step-by-step explanation:

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