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3 years ago

The sum of two brothers age is 38. One brother is ten years older than the other. How old is the youngest brother?

Mathematics

2 answers:

Firlakuza [10]3 years ago

8 0

The youngest brother is 14 because the older brother would be 24 and 24 plus 14 is 38.

Ira Lisetskai [31]3 years ago

3 0

Answer: 28

Step-by-step explanation:

38 - 10 equals 28

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The answer is the first option: I, II and III.

The explanation is shown below:

1. By definition, there is a joint variation when a variable depends on two or more different variables. Therefore, you can express it as following:

$y=kxz$

Where $x,y$ and $z$ are the variables and $k$ is the constant of proportionality.

As you can see, $y$ is directly proportional to $x$ and $z$ .

2. Keeping the information above, you have:

I) $V=lwh$ ( $V$ varies jointly with $l$ , $w$ and $h$ .

II) $V=\frac{1}{3}r^{2}h\pi$ (If $\frac{\pi}{3}$ is the constant of proportionality, $V$ varies jointly with $r^{2}$ and $h$ ).

III) $V=Bh$ ( $V$ varies jointly with $B$ and $h$ .

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Step-by-step explanation:

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12. The function M(h) = 10e-0.173h can be used to find the number of milligrams M of morphine that is

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Answer:

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Step-by-step explanation:

It is given M(h)= 10 $e^{-0.173h}$

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After 1 hour, plug in h as 1

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Simplify the right side

M(1)=10(0.84113)

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M(4)=10 $e^{-0.173*4}$

M(4)=10(0.50057)

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