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Zanzabum
2 years ago
13

PLEASE HELP WITH THIS QUESTION!!!!

Physics
2 answers:
Troyanec [42]2 years ago
8 0

The combined weight of all the samples can simply be calculated by the arithmetic sum of all the individual weights of each sample.

The total <em><u>combined weight</u></em><em> </em>of all the samples is "114.22 lb".

Adding the individual weights of each sample we get:

Combined weight = Weight of sample 1 + Weight of sample 2 + Weight of sample 3

Combined Weight = 31.2 lb + 38.02 lb + 45 lb

<u>Combined Weight = 114.22 lb</u>

<u />

The attached picture shows weight addition.

Learn more about combined weight here:

brainly.com/question/22890217?referrer=searchResults

solniwko [45]2 years ago
3 0

Answer:

31,2 + 38,02 + 45 = 114.22lbs

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Answer:

\dfrac{dz}{dt}=0.65\ ft/s

Explanation:

Given that

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By differentiating with respect to time t

2z\dfrac{dz}{dt}= 2x\dfrac{dx}{dt}+2y\dfrac{dy}{dt}

z\dfrac{dz}{dt}= x\dfrac{dx}{dt}+y\dfrac{dy}{dt}

Here x is constant that is why

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Now by putting the values in the above equation we get

150.74\times \dfrac{dz}{dt}=14\times 7

\dfrac{dz}{dt}=\dfrac{14\times 7}{150.74}\ ft/s

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Therefore the distance between balloon and observer increasing with 0.65 ft/s.

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