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klemol [59]
3 years ago
13

At what points are the equations y=x2 and y=1/x+2 equal?

Mathematics
2 answers:
Novay_Z [31]3 years ago
8 0
Try this:
1) If y=x² and y=(2x+1)/x, then 
x^2= \frac{2x+1}{x}; \ \ \textless \ =\ \textgreater \  \ x^3-2x-1=0; \ (x \neq 0) <=>   (x+1)(x^2-x-1)=0; \ (x \neq 0)\ \ \textless \ =\ \textgreater \    \left[\begin{array}{ccc}x=-1\\x= \frac{1+ \sqrt{5} }{2} \\x= \frac{1- \sqrt{5}}{2} \end{array}\right
2) after 'x' are found it need to calculate 'y':
Answer: (-1;1), (-0.618;0.382), (1.618;2.618)
Marta_Voda [28]3 years ago
5 0

Answer:

(-1,1),(-0.618,0.382), (1.618,2.618)

Step-by-step explanation:

we have

y=x^{2} ----> equation A

y=\frac{1}{x} +2 -----> equation B

we know that

The intersection points both graphs are the points where both equations have the same value

so

Using a graphing tool

The intersection points are (-1,1),(-0.618,0.382), (1.618,2.618)

see the attached figure


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Please help answer this question!! 20 points!!!!
Naily [24]

Answer:

Relative to such interrogate proposed, the answer is identified as 5520, if quantities ‘a’ and ‘b’ were to subject to define, given such conditions.

Step-by-step explanation:

Understood:

- Such quantity is a four (4) digit number, as explicitly stated.

- The value must be divisible by three (3). Thus, once the digits are summed, such quantity must be able to divide, and distribute evenly, into three (3).

- Likewise, such number is obligated to be divisible by five (5). Thus, the last digit of such quantity must end in either a ‘5’ or a ‘0’.

We were given the mathematical expression: 5a2b

5 + 2 = 7 + x = a number that is divisible by three, as stated in the problem.

X could be a list of differentiated number(s), although for a simplicity, x could be equated to as 5 to produce 12 (which is a factor of three, hence, divisible by three).

Now that ‘a’ has been substituted, ‘b’ must be substituted, similarly:

With ‘b’, we could appoint any number, so long that is either a 5 or 0 in the last digit, hence producing a value divisible my five.

For simplicity, which choosing either 5 or 0 does not make a difference, I will choose zero.

Thus, the rectified answer to such an interrogate is 5520. The difference between the largest of such number and the smallest is their abilities to become divisible by a certain constant ‘a’ and ‘b’.

*I hope this helps.

7 0
3 years ago
Nathaly is fixing up an apartment she just bought. She goes to Home Depot and spends $140.00 on plumbing and tiling supplies for
iogann1982 [59]

Answer:

138.60

Step-by-step explanation:

140.00 - 10%= 14.00 off

140.00 - 14.00 = 126.00

126.00 + 10% tax = 138.60

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3 years ago
Quadrilaterals ABCD and WXYZ are congruent.
horrorfan [7]

Answer:

Only sequence A

Step-by-step explanation:

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3 years ago
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swat32
40 problems

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If C = t - 5 and B = t^2 + 2, find an expression that equals 2C + 2B in standard<br> form.
adell [148]

Answer:

t² + t - 3 = 0

Step-by-step explanation:

C = t - 5

B = t² - 2

2C + 2B

= 2(t - 5) + 2(t² + 2)

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2 years ago
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