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Step2247 [10]
3 years ago
9

एक कार की गति 92.4 किमी प्रति घंटा है यह 20 मिनट मे कितना दुरी तय करेगी ​

Mathematics
2 answers:
forsale [732]3 years ago
7 0

Answer:

mate I will surely help if nut pls translate it in English as I can barely read hindi

Murljashka [212]3 years ago
3 0

Answer:

distance covered = 30.8 kilometers

Step-by-step explanation:

speed of car = 92.4 km / h

time taken by car

=》 20 min

=》 20 / 60 hour

( since, by dividing by 60 minutes get converted into hour . )

=》1/3 hour

distance covered = speed × time

=》d = 92.4 × (1/3)

=》d = 30.8

hence distance covered = 30.8 km

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A university investigation was conducted to determine whether women and men complete medical school in significantly different a
Rudiy27

Answer:

Following are the responses to the given question:

Step-by-step explanation:

Null \ H_{yp}: \mu_{men} = \mu_{women}\\\\Alt \ Hyp: \mu_{men} \neq \mu_{women}\\\\Std\  Error\ (SE) = \sqrt{(\frac{s_1^2}{n_1}) + (\frac{s_2^2}{n_2})} \\\\

                          = \sqrt{(\frac{0.62}{90}) + (\frac{0.52}{100})} \\\\= 0.08

test\ statistic \ t = \frac{(x_1 - x_2)}{SE} = \frac{(8.4 - 8.5)}{0.08} = -1.25

Degrees of freedom

= \frac{(\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2})^2}{\frac{(\frac{s_1^2}{n_1})^2}{(n_1 - 1)}} + \frac{(\frac{s_2^2}{n_2)^2}}{(n_2 - 1)}  \\\\= 174

Considering a degree of 5% importance

T for df critical value = 174 and sig level = 0.05 is +1.973

Let area of refusal shall be  t < -1.973 or t > +1.973

Because statistical tests weren't in the refusal zone, they may not deny that zero but find that perhaps the argument how both women and men undergo med school is considerably different lengths of time is not significantly supported.

6 0
3 years ago
5. Find the selling Price of an item that originally cost a store $70 was marked up20% and then after no selling for 6 months wa
zavuch27 [327]

Answer:

$75.6

Explanation:

If the original cost was $70 and it was marked up 20%, the price after this is calculated as:

$70 + $70(0.2) = $70 + $14 = $84

Where $70(0.2) = $14 is the amount added to the original when it is marked up 20%.

Then, it was discounted 10%, we get that the selling price is

$84 - $84(0.1) = $84 - $8.4 = $75.6

Where $84(0.1) = $8.4 is the discount made on the initial price.

Therefore, the answer is $75.6

4 0
2 years ago
Find a fundamental set of solutions {<img src="https://tex.z-dn.net/?f=y_%7B1%7D%2Cy_%7B2%7D%20" id="TexFormula1" title="y_{1},y
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Another Cauchy-Euler ODE.

y=x^r
\implies r(r-1)-13r+49=r^2-14r+49=(r-7)^2=0
\implies r=7
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where y_1=x^7 and y_2=x^7\ln x.

To verify that these solutions are linearly independent, check the Wronskian:

W(y_1,y_2)=\begin{vmatrix}x^7&x^7\ln x\\7x^6&x^6(7\ln x+1)\end{vmatrix}=x^{13}

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7 0
3 years ago
A manufacturer of cases for sound equipment requires drilling holes for metal screws. The drill bits wear out and must be replac
Scorpion4ik [409]

Answer:

There seems to be m linear relation between te data.

Negative relationships between variables.

Step-by-step explanation:

Speed(X)

60

60

60

60

80

80

80

80

100

100

100

100

120

120

120

120

140

140

140

140

Lifetime (Y) :

4.6

3.8

4.9

4.5

4.7

5.8

5.5

5.4

5

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3.2

4.8

4.1

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4

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3.4

The linear regression equation obtained by fitting the data using a regression model is :

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From the regression plot, the relationship between the two variables, speed and lifetime is negative, that is an increase in one variable will lead to a corresponding decrease in the other.

4 0
3 years ago
Triangle R T S is sitting on a horizontal line. Line S R extends through point Q to form exterior angle T R Q. Angle R T S is (2
Firlakuza [10]

Answer:

The value of x is 3 ⇒ 2nd answer

Step-by-step explanation:

<u><em>An exterior angle</em></u> is the angle between one side of a triangle and the

extension of an adjacent side

<u><em>The measure of an exterior angle at any vertex of a triangle equal the </em></u>

<u><em>sum of the measures of the two opposite interior angles</em></u>

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- Line S R extends through point Q to form exterior angle T R Q

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* Lets find the value of x

∵ ∠TRQ is an exterior angle of Δ RTS at the vertex R

∵ The opposite interior angles to vertex R are ∠RTS and ∠TSR

∴ m∠TRQ = m∠RTS + m∠TSR ⇒ <u><em>as the rule above</em></u>

∵ m∠TRQ = (45 x)°

∵ m∠RTS = (25 x)°

∵ m∠TSR = (57 + x)°

Substitute these measures in the equation above

∴ 45 x = 25 x + 57 + x

∴ 45 x = 26 x + 57

Subtract 26 x from both sides

∴ 19 x = 57

Divide both sides by 19

∴ x = 3

* The value of x is 3

3 0
4 years ago
Read 2 more answers
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