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xeze [42]
3 years ago
10

The zeros of f(x)= 3x^3+16x^2+18x-4

Mathematics
1 answer:
Otrada [13]3 years ago
4 0

After trial and error, you discover that - 2 works.

-2 || 3   16    18   -4

           -6   -20    4

====================================

      3    10  - 2    0

What you have left is a quadratic

3x^2 + 10x - 2 You can just use the quadratic formula to solve for the other 2 roots.

x1 =  [ - 10 +/- sqrt(10^2 - 4*3*(-2) ) ] / 6

x1 =  [ -10 +/- sqrt (100 + 24) ) /6

x1 =  [ - 10 +/- sqrt(124) ) / 6

x1 = [ - 10 +/- 11.14 ] / 6 = 0.1893

x2 = [ - 21.14 ] / 6 = - 3.522

Answer

x1 = - 2

x2 = 0.1893

x3 = - 3.522

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Answer:

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Step-by-step explanation:

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V=\pi r^2 h

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h is the height of the cylinder

In this problem we have:

h = 96 mm is the height of the can

d = 66 mm is the diameter of the can

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7 0
3 years ago
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Jonah recorded the points his team scored during its last nine basketball

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2 years ago
Point E is drawn on the graph so that the line EF is parallel to line CD
hoa [83]
What is the question though?? and what are the answer choices?? 
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You deposit $2000 each year into an account earning 3% interest compounded annually. How much will you have in the account in 25
kozerog [31]

This is what I get.  Total will be 4187.56 with  Interest 2187.56.   By using the formula: To find amount : A=p (1+r/n)^n×t Where P=2000,r=3%,n=1,t=25 So plug in and solve  A=2000(1+0.03/1)^1×25   To find interest you use formula  A=p+I A=4187.56, p=2000,i= we need to find. 4187.56=2000+I 4187.56-2000=I 2187.56=i

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3 years ago
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ololo11 [35]

Answer:

  a.  segment DE and segment EF are congruent to each other but not to segment DF, and their slopes are not related.

Step-by-step explanation:

In order for a triangle to be isosceles, two of the line segments must be congruent. (eliminates choices C and D)

If the slopes of the congruent segments are negative reciprocals of each other, the triangle is a right triangle, not an acute triangle. (eliminates choice B)

With choices B, C, D eliminated, we are left with choice A.

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However, <em>that necessary description is not sufficient</em> to constrain the triangle to be an acute triangle. In order for the triangle to be acute, the third side must be less than √2 times the length of either of the congruent sides.

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3 years ago
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