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Anna11 [10]
3 years ago
7

I need urgent help with the question. Can someone please give full working out of the attached question

Mathematics
1 answer:
Bumek [7]3 years ago
8 0

Answer:

2x-2

Step-by-step explanation:

Being specifically asked to rationalise the denominator we focus on it as required.

To rationalise a term it has to be multiplied by its inverse.

The inverse of

\sqrt{x}  -  \sqrt{2 - x}

is

\sqrt{x}  +  \sqrt{2 - x}

Multiplying this two vives us a difference of two squares

{( \sqrt{x} })^{2}  -  {( \sqrt{2 - x} )}^{2}

which gives us

x-(2-x)

=2x-2

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Are the ratios 2:1 aand 18:9 equivalent
Norma-Jean [14]
First bring them to common denominator.
4 0
3 years ago
30 + 6p = 7 (p+ 6 ) -5<br> Please answer
melamori03 [73]

Answer: p=-7

Step-by-step explanation:

To solve for p, you want to isolate the variable, get p alone. You would use different algebraic properties to do so.

30+6p=7p+42-5

30+6p=7p+37

-7=p

p=-7

6 0
3 years ago
Read 2 more answers
46.The function f graphed above is the function f(x) = log2(x) + 2 for x &gt; 0. Find a formula for the inverse of this function
pantera1 [17]

Answer:

The inverse for log₂(x) + 2  is - log₂x + 2.

Step-by-step explanation:

Given that

f(x) = log₂(x) + 2

Now to find the inverse of any function we put we replace x by 1/x.

f(x) = log₂(x) + 2

f(1/x) =g(x)= log₂(1/x) + 2

As we know that

log₂(a/b) = log₂a - log₂b

g(x) = log₂1 - log₂x + 2

We know that  log₂1 = 0

g(x) = 0 - log₂x + 2

g(x) =  - log₂x + 2

So the inverse for log₂(x) + 2  is - log₂x + 2.

3 0
4 years ago
A group of people were asked if they had run a red light in the last year. 150 responded "yes", and 185 responded "no". Find the
Softa [21]

Answer:

150/335, or 30/67

Step-by-step explanation:

Probability is expressed as the part against the whole (a fraction). All you have to do is divide how many people ran red lights by the total...and you're done!

Have a great day!

8 0
3 years ago
Someone help work out the mean!!
melamori03 [73]
40/5= 8 is the mean..........
3 0
3 years ago
Read 2 more answers
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