2 years ago

When is the substitution method a better method than graphing for solving a system of linear equations?

Mathematics

1 answer:

Allisa [31]2 years ago

7 0

Vasgr dgwqaesf asgeqhqethqe asgqeh

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A glass bottle filled with oil weighs 590 grams. After Sophia uses 200 milliliters of oil, the bottle weighs 400 grams. The weig

iris [78.8K]

Answer: The answer is $M=590-\dfrac{19}{20}V.$

Step-by-step explanation: Given that a glass bottle is filled with oil weighs 590 grams. After that, Sophia uses 200 millilitres of oil and then the bottle weighs 400 grams.

Therefore, the weight of the oil that Sophia uses = 590 - 400 = 190 grams.

That is, 190 grams = 200 millilitres, so

$1~\textup{ ml}=\dfrac{190}{200}~\textup{grams},\\\\\textup{V ml}=\dfrac{19}{20}\textup{V}~\textup{grams}.$

So, the relation between the weight 'M' of the bottle of oil, in grams, is a function of 'V', the volume of oil Sophia used is given by

$\textup{M}=590-\dfrac{19}{20}\textup{V}.$

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2 years ago

If h(x) = x - 7 and g(x) = x2, which expression is equivalent to (g0h)(5)?

notsponge [240]

Answer:

Step-by-step explanation:

I honestly couldn't tell you how to do this, I don't understand it. I just took the test and got this question correct. The answer is A, (5-7)^2.

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Please tell me how can i find x without calculator ?

gtnhenbr [62]

I hope this helps you

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3 years ago

Josh is hiking Glacier National Park. He has now hiked a total of 17 km and is 2 km short of being 1/2 half of the way done his

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What is the question? If it is how long is the total hike, then 17+2=19 (that’s half way).

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