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2 years ago

How can you represent a proportional relationship with an equation? PLS help me with an explanation.

Mathematics

2 answers:

earnstyle [38]2 years ago

8 0

Answer:

A proportional relationship between a quantity y and a quantity x that has a constant of proportionality k is represented by the equation y = kx.

Step-by-step explanation:

hope this explains well, good luck !

qwelly [4]2 years ago

4 0

Help me please I am so me if this is wrong I am so sorry my apologies One before enough I just need the points you knowAnd I need to take more letters to make the sand should go through so it’s up

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Calculate the velocity of a moving train with a mass 10,000kg and 150,000J of energy.

Viefleur [7K]

Kinetic energy possessed by moving train is $E_k = 150000J$ .

And mass $m = 10000kg$ .

The formula for kinetic energy is $E_k = \frac{m\times v^2}{2}$ .

Solve for velocity:

$E_k = \frac{m\times v^2}{2}\implies 2E_k = m\times v^2$

$v^2=\frac{2E_k}{m}\implies \underline{v = \sqrt{\frac{2E_k}{m}}}$

Now put in the data:

$v = \sqrt{\frac{2\times150000J}{10000kg}}\approx5.48\frac{m}{s}$

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2 years ago

The population is approximately 280,000 in 2006. The population grows at a rate of 7% per year. What was the population in 1990?

KonstantinChe [14]

Answer:

586,455 people

Step-by-step explanation:

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2 years ago

Are 9/21 and 6/14 equivalent fractions

sesenic [268]

Answer:

Yes

Step-by-step explanation:

9/21 SIMPLIFIED= 3/7

6/14 SIMPLIFIED= 3/7

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2 years ago

Read 2 more answers

2cos2ysin2y<br>simplify

murzikaleks [220]

Reorder 2 cos (2y) and sin (2y)

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Apply the sine double-angle identity

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Now multiply 2 by 2

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3 years ago

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faltersainse [42]

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