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Natasha2012 [34]
3 years ago
7

Help me pls help ..........

Mathematics
1 answer:
harkovskaia [24]3 years ago
7 0

Answer:

4

Step-by-step explanation:

(x)^2+(1/x)^2=18

(x-1/x)^2+2x.1/x=18

(x-1/x)^2+2=18

(x-1/x)^2=16

(x-1/x)^2=4^2

x-1/x=4

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Complete the square to rewrite y = x2 + 6x + 3 in vertex form. Then state whether the vertex is a maximum or a minimum and give
masha68 [24]

y = x² + 6x + 3

y = x² + 6x + 9 - 6

y = (x + 3)² - 6

since the coefficient of x² is positive, then min at (-3,-6). the answer is C.

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3 years ago
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Give the equation of the circle centered at the origin and<br> passing through the point (4,0)
zimovet [89]

Answer:

x² + y² = 4²

Step-by-step explanation:

The standard equation of a circle centered at the origin and with radius r is

x² + y² = r²

Note that the point (4, 0) is 4 units horizontally and to the right of the center (0, 0).  Thus, we know immediately that the radius is 4.

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3 years ago
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slava [35]

Answer:

The correct answer is m∠2 = 120°

Step-by-step explanation:

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Which category do all of these shapes belong to
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squares

Step-by-step explanation:

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3 years ago
Please add this problem 4 5/6 + 6/7=
sweet [91]
Convert to a mixed number:
239/42

Divide 239 by 42:
4 | 2 | 2 | 3 | 9

42 goes into 239 at most 5 times:
 | | | | 5
4 | 2 | 2 | 3 | 9
 | - | 2 | 1 | 0
 | | | 2 | 9

Read off the results. The quotient is the number at the top and the remainder is the number at the bottom:
 | | | | 5 | (quotient)
4 | 2 | 2 | 3 | 9 | 
 | - | 2 | 1 | 0 | 
 | | | 2 | 9 | (remainder)


The quotient of 239/42 is 5 with remainder 29, so:

Answer: 5 29/42
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3 years ago
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