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3 years ago

Simplify 3x3+27×2-15x÷3x

2 answers:

8 0

$\bf 3x^3+27x^2-15x\div 3x\implies \cfrac{3x^3+27x^2-15x}{3x}\implies \stackrel{\textit{distributing the denominator}}{\cfrac{3x^3}{3x}+\cfrac{27x^2}{3x}-\cfrac{15x}{3x}} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill x^2+9x-5~\hfill$

DochEvi [55]3 years ago

7 0

63-5x

So you do PEMDAS

There aren’t any parenthesis

There aren’t any exponents

So you multiply 3*3 and get 9

Multiply 27 by 2 and get 54

And divide 15x by 3x

Now moving on to addition/subtraction

The equation is now 9+54-5x

9+54 is 63

So the answer is 63+5x

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3 years ago

One fifth of sum of two angles is 24 and their diffetence is 14 find the two angles

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Answer:

Angles are $67^0,53^0$

Step-by-step explanation:

Let the angles be $x,y$

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3 years ago

9 Find the sum of (x + 5), (-4x – 2), and (2x – 1).

s344n2d4d5 [400]

Answer: -x + 2

Step-by-step explanation:

So I assume that the question would be set up like this if you are finding the sum of all 3 terms:

(x + 5) + (-4x - 2) + (2x - 1)

1) Take out parentheses

x + 5 - 4x - 2 + 2x - 1

2) Add like terms

For the x terms:

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For the other terms:

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3 years ago

Mario has $14.35 left it as wallet.

konstantin123 [22]

Answer:

Approximately $255

Step-by-step explanation:

If we need to find how much money Mario had before he spent money, we would have to add the prices that he spent to 14.35.

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Mario should of started out with $254.83 in his wallet.

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3 years ago