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ratelena [41]
3 years ago
15

Solve: 2x + 27 = 3x - 9

Mathematics
1 answer:
bija089 [108]3 years ago
6 0
  • Answer:

<em>x = 36</em>

  • Step-by-step explanation:

<em>2x + 27 = 3x - 9</em>

<em>27 + 9 = 3x - 2x</em>

<em>x = 36</em>

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Yess yess yess 5.76 si right


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Set 2 Maths has 30 pupils in it.
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The square root of the quotient of a number n and 3 is equal to the square root of 4 less than the number. Which of the followin
Lisa [10]

Answer:

6

Step-by-step explanation: You can set up the equation: \sqrt{\frac{n}{3} } = \sqrt{n-4} You square both sides to cancel out the squares which leaves you with \frac{n}{3} = n - 4. Then you just solve as normal which ends you up with an answer of 6. You can check this by plugging 6 back into the equation and see that you end up with \sqrt{2} on both sides.

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3 years ago
A certain company's main source is a mobile app. The function h models the company's annual profit (in million of dollars) as a
cricket20 [7]

Answer:

At price 3 and 11, the profit will be $0

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

<em> A certain companies main source of income is a mobile app. The companies annual profit (in millions of dollars) as a function of the app’s price (in dollars) is modeled by P(x)=-2(x-3)(x-11) which app prices will result in $0 annual profit?</em>

My answer:

Given:

  • x is the app price
  • P(x) is the profit earned

If we want to find out the app price that will result in $0 annual profit? It means we need to set the function:

P(x)=-2(x-3)(x-11) = 0

<=> (x-3)(x-11)= 0

<=> x - 3 = 0 or x - 11=0

<=> x = 3 or x = 11

So at price 3 and 11, the profit will be $0

Hope it will find you well.

5 0
3 years ago
Read 2 more answers
Select the property that allows m + 0 to be written as m
Elza [17]
Maybe identity property of addition?
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