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Inessa [10]
2 years ago
11

When a number is subtracted from 11, the result is 6 more than the number. Find the number.

Mathematics
2 answers:
Aleks04 [339]2 years ago
7 0

Answer:

2.5

Step-by-step explanation:

11-x=x+6

5-x=x

5=2x

2.5=x

Annette [7]2 years ago
3 0

Answer:

5 = 2x

Step-by-step explanation:

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Find the value of x² - x+1 when x=√3 -1, in the form a+b√3 where a and b are integers​
lidiya [134]

Answer:

6-3\sqrt{3}

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Step-by-step explanation:

We are given x=\sqrt{3}-1 and we are asked to find the value of x^2-x+1.

So we will need to find x^2.

x=\sqrt{3}-1

Square both sides:

x^2=(\sqrt{3}-1)^2

Expand using identity: (x-a)^2=x^2-2ax+a^2.

x^2=(\sqrt{3})^2-2(\sqrt{3})(1)+1^2

x^2=3-2\sqrt{3}+1

x^2=4-2\sqrt{3}

Let's go back to the full x^2-x+1.

x^2-x+1

(4-2\sqrt{3})-(\sqrt{3}-1)+1

4-2\sqrt{3}-\sqrt{3}+1+1

6-3\sqrt{3}

If you compare this to a+b\sqrt{3}, then a=6 and b=-3.

5 0
3 years ago
one of the comers of a cube is sliced off the resulting cross section will have a minimum of ? Sides ?
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2 years ago
Which operations flips the graph of a function over the x-axis
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The y function
hope this helps

7 0
3 years ago
Read 2 more answers
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