Can this linear system be solved by subtracting one of the original equations from the other? Why or why not

Mathematics

1 answer:

Citrus2011 [14]3 years ago

6 0

Can you show the information?

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E = MV^2 ÷ 2 + mgh, Make V Subject of the formula

Stels [109]

Answer:

$\red{ \bold{ V = \sqrt{\frac{2(E - mgh)}{M}}}}$

Step-by-step explanation:

$E = MV^2 ÷ 2 + mgh \\ \\ E - mgh = MV^2 ÷ 2 \\ \\ 2(E - mgh)= MV^2 \\ \\ \frac{2(E - mgh)}{M}=V^2 \\ \\ \sqrt{\frac{2(E - mgh)}{M}} = V \\ \\ \red{ \bold{ V = \sqrt{\frac{2(E - mgh)}{M}}}}$

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3 years ago

Given: △KLM, LM=20 3

egoroff_w [7]

Split the triangle into a 30-60-90 triangle. Since you have LM from that triangle, you can figure out the other sides. Then, using the leg from that triangle, the one next to it is a 45-45-90 triangle, meaning it's isosceles.

KM = 30 + 10√3

KL = 10√6

(sorry i'm not too sure if my "reasons" for statement/reason is correct)

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3 years ago

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allochka39001 [22]

X=9.3 is the answer to the question

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3 years ago

What is the company’s quick Ratio?

ArbitrLikvidat [17]

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Step-by-step explanation:

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3 years ago

A graph is made by a straight line that intersects the y axis at the point (0,12). Why isn't that graph a proportional relations

bogdanovich [222]

Answer:

The table of values and their graph show above a straight line that passes through the origin. This indicates that the relationship between the two currencies is in direct proportion. Think about what this means in real terms – if you have ten times more dollars than another person, when you both exchange your money, you will still have ten times more money. Notice also that the graph passes through the origin; this makes sense as if you have no dollars you will get no pounds!

We can express these relationships algebraically as well as graphically.

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3 years ago