2 years ago

Factor the expression: 8m - 20n

Mathematics

2 answers:

puteri [66]2 years ago

6 0

Answer: 11

Step-by-step explanation:

erastovalidia [21]2 years ago

6 0

Answer:

this operation is simple the result will be 12n

Step-by-step explanation:

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G(x)=2x -3<br> What is the value of<br> G(2) - g(3)

Stells [14]

Answer:

-2

Step-by-step explanation:

You plug the values in. 2(2)-3=1, and 2(3)-3=3

1-3=-2

Hope I helped!

8 0

2 years ago

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:

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