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2 years ago

No spams :))))))))))))

Mathematics

2 answers:

tatuchka [14]2 years ago

7 0

Answer:

Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. As I said, Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. I will reapeat once again, Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. As I said, Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. I will reapeat once again, Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. As I said, Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. I will reapeat once again, Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. As I said, Brainly is made for friendly students helping each other on a website called brainly, due to your question it must be reported brainly is not a website for asking about films, please delete your question. Thank you.

thank you my dear

Step-by-step explanation:

thank you my dear

Alexandra [31]2 years ago

3 0

A. Youre getting anyone willing to answer the survey, most of them might be in a rush so maybe they’ll decline so i think A is the safesy

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A trough has ends shaped like isosceles triangles, with width 5 m and height 7 m, and the trough is 12 m long. Water is being pu

Svet_ta [14]

Answer:

$\dfrac{dh}{dt}=21 \text{m/min}$

the rate of change of height when the water is 1 meter deep is 21 m/min

Step-by-step explanation:

First we need to find the volume of the trough given its dimensions and shape: (it has a prism shape so we can directly use that formula OR we can multiply the area of its triangular face with the length of the trough)

$V = \dfrac{1}{2}(bh)\times L$

here L is a constant since that won't change as the water is being filled in the trough, however 'b' and 'h' will be changing. The equation has two independent variables and we need to convert this equation so it is only dependent on 'h' (the height of the water).

As its an isosceles triangle we can find a relationship between b and h. the ratio between the b and h will be always be the same:

$\dfrac{b}{h} = \dfrac{5}{7}$

$b=\dfrac{5}{7}h$ this can be substituted back in the volume equation

$V = \dfrac{5}{14}h^2L$

the rate of the water flowing in is:

$\dfrac{dV}{dt} = 6$

The question is asking for the rate of change of height (m/min) hence that can be denoted as: $\frac{dh}{dt}$

Using the chainrule:

$\dfrac{dh}{dt}=\dfrac{dh}{dV}\times \dfrac{dV}{dt}$

the only thing missing in this equation is dh/dV which can be easily obtained by differentiating the volume equation with respect to h

$V = \dfrac{5}{14}h^2L$

$\dfrac{dV}{dh} = \dfrac{5}{7}hL$

reciprocating

$\dfrac{dh}{dV} = \dfrac{7}{5hL}$

plugging everything in the chain rule equation:

$\dfrac{dh}{dt}=\dfrac{dh}{dV}\times \dfrac{dV}{dt}$

$\dfrac{dh}{dt}=\dfrac{7}{5hL}\times 6$

$\dfrac{dh}{dt}=\dfrac{42}{5hL}$

L = 12, and h = 1 (when the water is 1m deep)

$\dfrac{dh}{dt}=\dfrac{42}{5(1)(12)}$

$\dfrac{dh}{dt}=21 \text{m/min}$

the rate of change of height when the water is 1 meter deep is 21 m/min

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MAXImum [283]

Answer:

Antwanun waters his lawn 3 times a week, he watered his lawn 24 . So what you will need to do is divide 3 in 24 to find how many weeks he has been watering his lawn, You get 8. Mr. Antwanun has been watering for 8 weeks. Equation- Antuwantun waters his lawn 3 times a week so if he watered his lawn 24 times, 3 times a week he would have been watering his lawn for 8 weeks.

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zhuklara [117]

Answer:

It's c im taking the same test lol

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6th-grade math, fill out the table! :)