<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B40%7D%7B3%3F%7D%20%20%5Cdiv%20160" id="TexFormula1" title=" \frac{40}{3?} \div 1

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quester [9]

3 years ago

60" alt=" \frac{40}{3?} \div 160" align="absmiddle" class="latex-formula">

Mathematics

1 answer:

Alexxx [7]3 years ago

7 0

You’re answer would be 1/12 I think that’s what I got but I’m not exactly sure

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What’s the product (5r+2)(3r-4)

Marrrta [24]

$(5r+2)(3r-4) =15r^2-20r+6r-8=15r^2-14r-8$

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Select the positive or negative integer for the situation.

prisoha [69]

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1500

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Assume that the radius r of a sphere is expanding at a rate of 40 cm/min. The volume of a sphere is V = 4 3 πr3 and its surface

Scrat [10]

Answer:

The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.

Step-by-step explanation:

The area of a sphere is given by the following formula:

$A = 4\pi r^{2}$

In which A is the area, measured in cm², and r is the radius, measured in cm.

Assume that the radius r of a sphere is expanding at a rate of 40 cm/min.

This means that $\frac{dr}{dt} = 40$

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$A = 4\pi r^{2}$

Applying implicit differentiation.

We have two variables, A and r, so:

$\frac{dA}{dt} = 8r\pi \frac{dr}{dt}$

$\frac{dA}{dt} = 8*20\pi*40$

$\frac{dA}{dt} = 20106.19$

The rate of change in surface area when r = 20 cm is 20,106.19 cm²/min.

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3 years ago

Calvin bought 20 pencils at 0.45 each how many change did he get from a 10 dollar bill

ehidna [41]

To get the answer, multiple 20 by 0.45= $9 than subtract 9$ from $10 which equals $1.

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3 years ago

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.. pls help me....!!!!! Determine whether the point (-2,4) satisfy y<3x+5,y=3x+5 or y >3x+5..

nasty-shy [4]

Answer:

$y > 3\cdot x + 5$

Step-by-step explanation:

Let $A(x,y) = (-2,4)$ and $y = 3\cdot x + 5$ . Now we evaluate the given function at $x = -2$ :

$y = 3\cdot x + 5$ (1)

$y = 3\cdot (-2)+5$

$y = -6 +5$

$y = -1$

Which means that $y$ is less than the y-component of A. Therefore, the right answer is $y > 3\cdot x + 5$ .

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3 years ago