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3 years ago

7

porfavor ayudenme dare corona a quien responda bien con procedimiento una sustancia tiene un volumen de 20 ml y una densidad de

4g /mlg ¿cual es la masa de esta sustancia?

1 answer:

valentina_108 [34]3 years ago

6 0

Answer:

si

Step-by-step explanation:

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You are designing a rectangular garden. the garden will be enclosed by fencing on three sides and by a house on the fourth side.

RUDIKE [14]

Suppose the dimensions of the rectangle is x by y and let the side enclosed by a house be one of the sides measuring x, then the sides that is to be enclosed are two sides measuring y and one side measuring x.

Thus, the length of fencing needed is given by

P = x + 2y

The area of the rectangle is given by xy,

i.e.

$xy = 288 \\ \\ \\ \\ \Rightarrow y= \frac{288}{x}$

Substituting for y into the equation for the length of fencing needed, we have

$P=x+2\left( \frac{288}{x} \right)=x+ \frac{576}{x}$

For the amount of fencing to be minimum, then

$\frac{dP}{dx} =0 \\ \\ \Rightarrow1- \frac{576}{x^2} =0 \\ \\ \Rightarrow \frac{576}{x^2} =1 \\ \\ \Rightarrow x^2=576 \\ \\ \Rightarrow x=\sqrt{576}=24$

Now, recall that

$y= \frac{288}{x} = \frac{288}{24} =12$

Thus, the length of fencing needed is given by

P = x + 2y = 24 + 2(12) = 24 + 24 = 48.

Therefore, 48 feets of fencing is needed to enclose the garden.

8 0

3 years ago

What is this equation factored<br>49x²-1

Natali [406]

The answer should be (7x+1)(7x-1)

5 0

3 years ago

Can someone answer this for me please.

nataly862011 [7]

I’m pretty sure the answer would be “C” I’m not sure though

4 0

3 years ago

(9-2x)+(6x+4) find the sum

aliya0001 [1]

Answer:

4x+13

Step-by-step explanation:

combine like terms -2x and 6x to get 4 then combine 9 and 4 to get 13

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3 years ago

Compute $14A6_{12} - 5B9_{12}$. Give your answer as a base $12$ integer.

avanturin [10]

Answer:

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3 years ago