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Irina18 [472]
2 years ago
9

What is the value of the rational expression 2x- 1 x+5 when x = 0?

Mathematics
1 answer:
nikitadnepr [17]2 years ago
7 0

Answer:

5

Step-by-step explanation

becasue 2x0=0 and 1x0=0

and when you add 5 to 0 you get five

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Rearrange y =1/2x+1to make x the subject.
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y =  \frac{1}{2} x + 1 \\

Multiply sides by 2

2 \times y = 2 \times ( \frac{1}{2} x + 1) \\

2y =( 2 \times  \frac{1}{2} x) + (2 \times 1) \\

2y = x + 2

x + 2 = 2y

Subtract sides 2

x + 2 - 2 = 2y - 2

x = 2y - 2

Done...

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3 0
3 years ago
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X:y=5:3 and x+y=56<br> work out he value of x-y
Alex

Answer:14

Step-by-step explanation:

x+y=56

x:y=5:3

Sum of ratio=5+3

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x=5/8x56

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x=280 ➗ 8

x=35

y=3/8x56

y=(3x56) ➗ 8

y=168 ➗ 8

y=21

x-y

35-21=14

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3 years ago
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Please prove the following trigonometric identity.<br><br>​
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Step-by-step explanation:

solution:- from LHS 1-cos²x/sinx

∵ 1-cos²x = sin²x

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Answer:

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Step-by-step explanation:

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(5).  <em>(a)</em>  Domain is [ - 4, 2] and Range is [ - 4, 4]

or

domain: - 4 ≤ x ≤ 2 , range: - 4 ≤ y ≤ 4

6 0
3 years ago
Please help quick! 4 3/5 - 2 4/5
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Answer:

\frac{9}{5} \\ \\ OR\\ \\ 1\frac{4}{5}

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