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2 years ago

Solve the attached question.No spam allowed!

Mathematics

1 answer:

ohaa [14]2 years ago

3 0

Answer:

$= 100$

Step-by-step explanation:

TSA of brick → 2(L×b+b×h+h×l)

$= 2(22.5× 10 + 10 \times 7.5 +7.5 \times 22.5)$

$= 2 (225 +75 + 168.75) cm²$

$=2 ( 468.75) cm ²$

$= 937.5cm²$

$= \frac{937.5 {cm}^{2} }{100 \times 100}$ $=0.09375 m²$

Therefore, Required number of Bricks-

$= \frac{9.375 {cm}^{2} \times 100}{0.09375 \: {cm}^{2} }$

$= 100$

Hence,The required Number of Bricks = 100 respectively.

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An article was sold for Rs 30

katrin [286]

Answer:

Rs. 32.77

Step-by-step explanation:

At a loss of 24% sale price = Rs. 30
At a loss of 17% sale price = ?

----------

Finding cost price:

Sale price = cost - loss

If cost = x:

x - 24% = 30
0.76x = 30
x = 30/0.76
x ≈ 39.48

SP at a loss of 17%:

39.48 - 17% = 39.48*0.83 ≈ 32.77

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2 years ago

When a number is decreased by 47%, the result is 20. What is the original number

Digiron [165]

Answer:

42.553191489361

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2 years ago

The insurance company has determined that in any one year, the probability that George will have a car accident is 0.05 and that

nata0808 [166]

0.65

0.40(will be hospitalized) - 1.0 = 0.60(will not be hospitalized)

car accident + won’t be hospitalized = 0.65
0.05+0.60= 0.65

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2 years ago

Does soil without nitrogen decrease the weight of worms when compared to soil with nitrogen? The weights of 14 randomly selected

zhuklara [117]

It Would be choice B. Hope it helps!

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2 years ago

Let divf = 6(5 − x) and 0 ≤ a, b, c ≤ 12. (a) find the flux of f out of the rectangular solid 0 ≤ x ≤ a, 0 ≤ y ≤ b, and 0 ≤ z ≤

dusya [7]

Continuing from the setup in the question linked above (and using the same symbols/variables), we have

$\displaystyle\iint_{\mathcal S}\mathbf f\cdot\mathrm d\mathbf S=\iiint_{\mathcal R}(\nabla\cdot f)\,\mathrm dV$
$=\displaystyle6\int_{z=0}^{z=c}\int_{y=0}^{y=b}\int_{x=0}^{x=a}(5-x)\,\mathrm dx\,\mathrm dy\,\mathrm dz$
$=\displaystyle6bc\int_0^a(5-x)\,\mathrm dx$
$=6bc\left(5a-\dfrac{a^2}2\right)=3abc(10-a)$

The next part of the question asks to maximize this result - our target function which we'll call $g(a,b,c)=3abc(10-a)$ - subject to $0\le a,b,c\le12$ .

We can see that $g$ is quadratic in $a$ , so let's complete the square.

$g(a,b,c)=-3bc(a^2-10a+25-25)=3bc(25-(a-5)^2)$

Since $b,c$ are non-negative, it stands to reason that the total product will be maximized if $a-5$ vanishes because $25-(a-5)^2$ is a parabola with its vertex (a maximum) at (5, 25). Setting $a=5$ , it's clear that the maximum of $g$ will then be attained when $b,c$ are largest, so the largest flux will be attained at $(a,b,c)=(5,12,12)$ , which gives a flux of 10,800.

7 0

2 years ago

Solve the attached question.No spam allowed!​

Solve the attached question.No spam allowed!