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kirill [66]
4 years ago
13

What value of k makes the factor (x+3) a factor of the function f(x)=3x^3-2x+k?

Mathematics
1 answer:
4vir4ik [10]4 years ago
5 0
Step by step equation
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What coordinate for F would make triangle ABC and triangle DEF congruent? Triangle ABC is shown. For triangle ABC, A is at 0, 3,
k0ka [10]
Recall that t<span>wo shapes are said to be congruent if the lengths of the sides and the angles are the same.

For triangle A B C to be congruent to triangle D E F, then A B = D E, A C = D F and B C = E F

Also, the triangle D E F is a result of a rigid body translation of the triangle A B C.

Given that A is at point (1, 0) and D is at point (-1, 0), also given that B is at point (-1, 2) and E is at point (1, -2).

</span><span>It can be seen that points D E is a result of refrecting points A B across the y-axis and then the x-axis.

</span><span>Thus, given point C as (2, 3), refrection of point C across the y-axis will result in point (-2, 3) and then reflecting the resulting point across the x-axis will result to point (-2, -3).

</span>Therefore, the coordinate for 'F' that would make triangle A B C and triangle D E F congruent is (-2, -3).
7 0
3 years ago
A manufacturer of paper coffee cups would like to estimate the proportion of cups that are defective (tears, broken seems, etc.)
Maksim231197 [3]

Answer:

a

  The 95% confidence interval is  0.0503  <   p < 0.1297

b

The sample proportion is  \r p =  0.09

c

The critical value is  Z_{\frac{\alpha }{2} } =  1.96

d

 The standard error is  SE   =0.020

Step-by-step explanation:

From the question we are told that

   The  sample size is  n =  200

     The number of defective is  k =  18

The null hypothesis is  H_o  :  p  =  0.08

The  alternative hypothesis is  H_a  :  p > 0.08

Generally the sample proportion is mathematically evaluated as

            \r p =  \frac{18}{200}

            \r p =  0.09

Given that the confidence level is  95% then the level  of significance is mathematically evaluated as

        \alpha  =  100 -  95

        \alpha  =  5\%

        \alpha  =  0.05

Next we obtain the critical value of  \frac{ \alpha }{2} from the normal distribution table, the value is  

        Z_{\frac{\alpha }{2} } =  1.96

Generally the standard of error is mathematically represented as

          SE   =  \sqrt{\frac{\r p (1 -  \r p)}{n} }

substituting values

         SE   =  \sqrt{\frac{0.09  (1 -  0.09)}{200} }

        SE   =0.020

The  margin of error is  

       E =  Z_{\frac{ \alpha }{2} }  * SE

=>    E =  1.96  *  0.020

=>   E =  0.0397

The  95% confidence interval is mathematically represented as

     \r p  -  E  <  \mu <  p <  \r p  + E

=>   0.09 - 0.0397  <  \mu <  p < 0.09 + 0.0397

=>  0.0503  <   p < 0.1297

7 0
3 years ago
Calvin sells real estate. He earns a 5% straight commission on each sale. He recently sold a house for $159,000.
Vanyuwa [196]
Mupliply .5 by 159000 and you get 79,500
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3 years ago
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the lengths of the sides of a triangle are consecutive odd integers.if the perimeter of the triangle is 27 what is are the lengt
Umnica [9.8K]
The lengths of each side are 9
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3 years ago
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Midway through the fundraiser, Mrs Little, the sponsor, discovers a container of buttermilk in the back of the fridge. It has 6
solong [7]

Answer: 6 recipes

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7 0
3 years ago
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