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3 years ago

In the figure, the horizontal lines are parallel and AB = BC = CD. If LM = 3 Find JM? A. 12 B. 6 C. 3 D. 9

Mathematics

1 answer:

ziro4ka [17]3 years ago

5 0

A.12 because i had same question

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The circular stream of water from a faucet is observed to taper from a diameter of 20 mm to 10 mm in a distance of 50 cm. Determ

steposvetlana [31]

Solution:

From Bernoulli equation

$\frac{1}{2}$ ρ $V_{1}^{2}$ + ρgh = $\frac{1}{2}$ ρ $V_{2}^{2}$ , where ρ is density of water, h – height difference and $V_{1}$ and $V_{2}$ are the velocities in upper and lower cross sections correspondingly. We take into account that the pressure in both cross-sections is the same and equal to the atmospheric one.

From the continuity and assuming water incompressible:

$\pi r_{1}^{2}$ $V_{1}$ = $\pi r_{2}^{2}$ $V_{2}$ , where $A_{1}$ and $A_{2}$ are the corresponding cross-sections. As the lower diameter is twice as low as the upper one, we can conclude that $V_{1} = \frac{V_{2}}{4}$

Inserting it back into Bernoulli equations produces:

$V_{1} = \sqrt{\frac{2}{15}gh} = 0.26m/s$ and the flow rate is

$\pi r_{1}^{2}V_{1} = \pi r_{2}^{2}V_{2} = 8.10^{-5} \frac{m^{3} }{s}$

6 0

3 years ago

-5x + 11 = -8(4 + 6x) What are the steps?

Bad White [126]

Answer:

$x = - 1$

Step-by-step explanation:

$- 5x + 11 = - 8(6x + 4)$

$= > - 5x + 11 = - 48x - 32$

Lets keep the variable terms in L.H.S. and the constant terms in R.H.S.

$= > 48x - 5x = - 32 - 11$

$= > 43x = - 43$

Lets divide 43 on both the sides.

$= > \frac{43x}{43} = \frac{ - 43}{43}$

$= > x = - 1$

5 0

3 years ago

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what is the solution to -sqrt(75) to the nearest integer I will give braniest

NISA [10]

Sqrt(75) is 8.660254038 and so on

the nearest integer would be 9

So the solution to sqrt(75) is 9

Hope that helps u!

4 0

3 years ago

Mr. Smith tells you that a right triangle has a hypotenuse of 19 and a leg of 10. He asks you to find the other leg of the trian

ad-work [718]

Answer: Since it is not a perfect square my answer is the square root of 261 or 16.16 which is rounded to the nearest hundredth.

Step-by-step explanation:

10^2 + b^2 = 19^2

100 + b^2 = 361

-100 -100

b^2 = 261

b= $\sqrt{261}$

3 0

3 years ago

Helppp!!!! please!!!

postnew [5]

Answer:

256m^2.

Step by step:

Well now let’s find the area of a square which is 8*8 = 64.
And now let’s find the area of a triangle using the formula 12*8 / 2 = 48.
And since there is 4 sides we multiply 48 by 4 which is 192.
so 192 + 64 is 256m^2.

8 0

3 years ago

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