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WINSTONCH [101]
3 years ago
6

What is 3(x+2) +4y +9x -5

Mathematics
1 answer:
nevsk [136]3 years ago
8 0
You distribute the 3 and get 3x + 6 + 4y + 9x - 5 and from here you would combine like terms. so you should get 12x + 4y + 1
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49/4 yd^3 is the volume


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One x-intercept for a parabola is at the point (4,0). Find the other x-intercept for the parabola defined by this equation y=x^2
yanalaym [24]
Probably the easiest way to do this is to use synthetic division.  We already know one of the zeros of the quadratic so we can use that number to find the other zero.  If the point is (4, 0), then when y = 0, x = 4.  Thus, 4 is a zero.  Put 4 outside the "box" and put the coefficients from the quadratic inside, like this: 4   (1   -1   -12).  Draw a line and bring down the first one under it.  Multiply that 1 by the 4 to get 4.  Put that 4 up under the -1 and add to get 3.  Multiply 3 by 4 to get 12.  Put that 12 up under the -12 and add to get 0.  The numbers left under the line are the coefficients for the next polynomial, called the depressed polynomial, and this polyomial is one degree less than the one we started with.  Those coefficients are 1 and 3.  Therefore, the polynomial is x + 3 = 0.  That means that the other zero, or x-intercept, is x = -3.

6 0
4 years ago
Which is true about the polynomial ?
lisov135 [29]

Answer:

Step-by-step explanation:

 y^2 - 3y + 12

It has 3 terms (y^2) and (-3y) and (12)...therefore, it is a trinomial.

The degree of a polynomial with 1 variable is the highest exponent...so it has a degree of 2. But if it had more then 1 variable, it would be different.

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3 0
3 years ago
How do I solve this?
vodomira [7]
I’m assuming what you’re asking here is how to *factor* this expression. For that, let’s rearrange the expression into a more familiar form:

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From here, we’ll factor out a -1 so that we have:

-(c^2+4c-21)

Let’s focus on the quadratic expression inside the parentheses. To find our factors (c + x)(c + y), we’ll need to find two terms x and y that multiply together to make -21 and add together to make 4. It turns out that the numbers -3 and 7 work out perfectly for that purpose (-3 x 7 = -21 and 7 + (-3) = 4), so substituting them in for x and y, we have:

(c + (-3))(c + 7)
(c - 3)(c + 7)

And adding back on the negative from a few steps earlier:

-(c - 3)(c + 7)
7 0
3 years ago
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