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3 years ago

What is 3x plus 4 equals 12

Mathematics

1 answer:

____ [38]3 years ago

5 0

Answer:

3x + 4 = 12

Step-by-step explanation:

plus = +

equal = =

but if you were looking for the answer to the equation

3x + 4 = 12

3x = 12 - 4 (the symbol changes bc i switched it to the other side)

3x = 8

x = 8/3

~batmans wife dun dun dun.....

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Answer:

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Step-by-step explanation:

Given as :

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For Kent

Time = $\dfrac{\textrm Distance}{\textrm Speed}$

So, T = $\dfrac{\textrm D miles}{\textrm S miph}$

Or, T = $\dfrac{\textrm 230 miles}{\textrm (s + 4) miph}$

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So, t = T

Or, $\dfrac{\textrm 210 miles}{\textrm s miph}$ = $\dfrac{\textrm 230 miles}{\textrm (s + 4) miph}$

Or, 210 × (s + 4) = 230 × s

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i.e S = 42 + 4

or, S = 46 miph

So, The speed of Kent = S = 46 miles per hour

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