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2 years ago

Need help on this please

Mathematics

1 answer:

rodikova [14]2 years ago

4 0

Answer: 2√10 - √30

explanation:

ok so they’re asking for the difference between the lengths of the sides of each cube. they have different SA’s (surface areas). all you gotta do is plug in the SA in the given equation to find the length of the side and THEN you subtract the answers and thats how you find the difference between the sides.

given:
s = √(SA/6)
SA1 = 240 m^2
SA2 = 180 m^2

S1 = √(240/6) = 2√10 or 6.32
S2 = √(180/6) = √30 or 5.47

s1 -s2 = 2√10 - √30

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Convert 7 pounds 3 ounces to

svetoff [14.1K]

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Step-by-step explanation:

We need to convert 7 pounds and 3 ounces to kilograms.

We know:

1 lb = 16 oz

and 1 kg = 2.2 lb

where lb stands for pounds and oz stands for ounces and kg stands for kilograms.

$16\,\,oz = 1\,\,pound\\1\,\,oz = \frac{1}{16} \,\,pound\\3\,\,oz = \frac{1}{16} * 3\,\,pounds\\3\,\,oz = 0.1875\,\,pounds$

So, Total pounds = 7+0.1875 = 7.1875

Now, Converting Pounds to kg

$2.2\,\,pounds = 1\,\,kg\\1\,\,pound = \frac{1}{2.2} \,\,kg\\7.1875\,\,pounds = \frac{1}{2.2} * 7.18757.1875\,\,pounds = 3.27\,\,kg$

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Learn more about Converting Pounds to Kgs at:

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3 years ago

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Vladimir79 [104]

Answer:

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3 years ago

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Suppose the function H(t) gives the heart rate of a runner at various points in time (in minutes) during a 5 mile run, which tak

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Answer:

[0, 57.5]

OR

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Step-by-step explanation:

Given the function $H(t)$ which gives the heart rate as per time.

That means Heart rate of the runner changes according to time.

$H(t)$ is a function which takes Time as input as observed by the function's representation. In bracket, there is $t$ .

That also means time $t$ is the input to the function $H(t)$ .

It is also given that during the time as the runner runs, the heart beat will change.

The output of the given function will be Heart beat of the runner.

Time taken to complete the run is given as 57 minutes and 30 seconds.

Domain of a function is the valid inputs that can be given to the function for which the output of the function is defined.

Here, time in minutes is the input to the function.

So, maximum time can be 57.5 minutes.

And as the runner will start from the time = 0 minutes

So, the valid inputs can be from 0 to 57.5 minutes.

Therefore, the domain is [0, 57.5]

OR

0 - 57.5

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3 years ago

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3 years ago

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