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cupoosta [38]
3 years ago
11

Evaluate: 23 + x/8 for x = 8

Mathematics
2 answers:
sveta [45]3 years ago
8 0
23 + x/8

substitute 8 in x

23 + 8/8

23 + 1 = 24
Ulleksa [173]3 years ago
8 0
Evaluate: 23 + x/8 for x = 823 + 8/8= 24
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Suppose the graph of a cubic polynomial function has the same zeroes and passes through the coordinate (0, -5). Write the equati
amid [387]
In this we know all three zeros and one point from which the graph pass.
So we will let specific cubic polynomial function of the form
f(x) = a(x - x_1)(x-x_2)(x-x_3)

As we know zeros are that point where we will get value of function equal to zero. So it is basically in form (x_n , 0)

SO in given question zeros are (2 , 0) , (3, 0) and (5,0)
So we can say x_1 = 2 , x_2 = 3 , x_3 = 5

So required equation is
f(x) = a (x-2)(x-3)(x-5)
              = a[(x^2 - 2x - 3x + 6)(x-5)]
              = a[(x^2 - 5x+6)(x-5)]
              = a(x^3 - 5x^2 + 6x- 5x^2 + 25x - 30)
              = a(x^3 - 10x^2+31x-30)
Now we have one point (0 , -5) from which graph passes.
So we say at x = 0 , f(x) = -5
-5= a (0-0+0 - 30)
-5 = -30a
a =  \frac{-5}{-30} =  \frac{1}{6}
So required equation of cubic polynomial is
f(x) =  \frac{1}{6}(x^3 -10x^2+31x-30)

For finding y - intercept we simply plugin x = 0 in given equation.
As we know at x = 0 , value of function is -5.
So y - intercept is -5.
4 0
3 years ago
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5m - 4n, when m=5 and n = 3.
tiny-mole [99]

Answer:

5m - 4n

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= 13

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Answer is: 1.6 m3 of sand
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The answer is: A

A decagon is a 10-sided polygon, with 10 interior angles, and 10 vertices which is where the sides meet. A regular decagon has 10 equal-length sides and equal-measure interior angles. Each angle measures 144°
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3 years ago
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6x&gt;42 see do steps<br> pls help me
Marina CMI [18]

Answer:x>7

Step-by-step explanation:

1. 6x>42

2. 6x/6>42/6

3. x>7

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