2 years ago

4 times a number is decreased by 9, the result is the same as when 15 is added to twice the number. find the number

Mathematics

1 answer:

igor_vitrenko [27]2 years ago

5 0

Answer:

Step-by-step explanation:

4*x-9=2x+15

4x-9=2x+15

-2x -2x

2x-9=15

2x=24

x=12

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Answer:

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Step-by-step explanation:

Assuming you require to simplify the expression.

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplifying the radicals

$\sqrt{72}$ = $\sqrt{36(2)}$ = $\sqrt{36}$ × $\sqrt{2}$ = 6 $\sqrt{2}$

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Then

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It’s initial temperature can be calculated as at the time when x = 0

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This is because the exponent part equals 1 since anything raised in to the power of zero is one.

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4 times a number is decreased by 9, the result is the same as when 15 is added to twice the number. find the number￼

4 times a number is decreased by 9, the result is the same as when 15 is added to twice the number. find the number