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4 years ago

What is the solution of x in the equation below ? -5(3-x)+4=5x-11

Mathematics

1 answer:

forsale [732]4 years ago

6 0

All real numbers.
Explanation: any non imaginary number will work.

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Answer me please now

Anna35 [415]

Answer:

1. $8.

2. 48 counters.

Step-by-step explanation:

1. A pair of socks cost 20 - 2(6)

= $8.

2. let the number of counters in Box A and Box be be x.

Then the number of counters in Box B after the transfer is x + 1/2 x.

x + 1/2 x = 72

1.5 x = 72

x = 72 / 1.5

= 48.

4 0

3 years ago

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The polynomial x^2+3x-1 is a factor of x^4+3x^3-2x^2-3x+1 true or false?

pashok25 [27]

Answer:

Yes, it is true that $x^2+3x-1$ is a factor of $x^4+3x^3-2x^2-3x+1$ .

Step-by-step explanation:

Let us try to factorize $x^4+3x^3-2x^2-3x+1$

$x^4+3x^3-2x^2-3x+1\\\Rightarrow x^4-2x^2+1-3x+3x^3$

Let us try to make a whole square of the given terms:

$\Rightarrow (x^2)^2-2\times x^2 \times 1+1^2+3x^3-3x\\\Rightarrow (x^2-1)^2+3x^3-3x\\$

--------------

Formula used above:

$a^{2} -2 \times a \times b +b^{2} = (a-b)^2$

In the above equation, we had $a = x, b = 1$ .

--------------

Further solving the above equation, taking $3x$ common out of $3x^3-3x$

$\Rightarrow (x^2-1)^2+3x(x^2-1)\\$

Taking $(x^{2} -1)$ common out of the above term:

$\Rightarrow (x^2-1)((x^2-1)+3x)\\\Rightarrow (x^2-1)(x^2+3x-1)$

So, the two factors are $(x^2-1)\ and\ (x^2+3x-1)$ .

$\therefore$ The statement that $x^2+3x-1$ is a factor of $x^4+3x^3-2x^2-3x+1$ is True.

7 0

3 years ago

How do you simplify 1/5(10x-25)

kozerog [31]

Answer:2x-5

Step-by-step explanation:

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3 years ago

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Expand & simplify (x+1)2

stepan [7]

Answer:

(2x+2)

Step-by-step explanation:

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3 years ago

One day Sally earned £60 She worked for 8 hours Work out Sally’s hourly rate of pay?

Scrat [10]

Answer:

£7.50

Step-by-step explanation:

Hope this helps! If I could have brainliest I'm trying to rank up :)

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3 years ago

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