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OlgaM077 [116]
3 years ago
8

If f(x)=x^2and g(x)=6x+4,for which value of x does (f+g) =0

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
6 0

Step-by-step explanation:

When (f + g)(x) = 0,

f(x) + g(x) = x² + 6x + 4 = 0.

Therefore (x + 3)² - 5 = 0, we have

x = sqrt5 - 3 or x = -sqrt5 - 3.

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The length of a rectangle is three more than twice its width the perimeter of a rectangle is 42 cm what is the length of the rec
Maurinko [17]

Answer:

The length of the rectangle is 15 cm.

Step-by-step explanation:

breadth(b)=?

length(l)= 3+2b

perimeter(P)= 42 cm

Now,

  P = 2 ( l+b )

or, 42= 2 ( 3+2b+b)

or, 42 = 2 ( 3+3b)

or, \frac{42}{2} = 3+3b

or, 21 = 3+3b

or, 21-3 =3b

or, 18 = 3b

or, \frac{18}{3} = b

or, 6 = b

Here, Breadth(b)= 6 cm

Length (l) = 3 + 2*6

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5 0
3 years ago
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Answer:

$15

Step-by-step explanation:

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5 0
3 years ago
Two identical square pyramids were joined at their bases to form the composite figure below.
gulaghasi [49]
The answer is A!

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3 0
3 years ago
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Suppose that y varies inversely with x. Write a function that models the inverse function. X= 15 when y= 2
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Which phrase describes the linear relationship between the x and y values shown in the table?
kompoz [17]

9514 1404 393

Answer:

  C. y is 6 less than x

Step-by-step explanation:

It is not hard to check.

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  D. 6 more than 8 is 14, not 2

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The relation described in C matches the table.

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