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olganol [36]
3 years ago
10

Can anyone help me with this problem? Thanks

Mathematics
1 answer:
Sindrei [870]3 years ago
3 0

Answer:

NO lmbo

Step-by-step explanation:

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Divide -2x^3-4x^2+3x+2 by x-3
dimaraw [331]
Use the factor method and step by step

7 0
4 years ago
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1.<br>Prove that the roots of x^2 + (1 - k).x+k-3 = 0 are real for all real values of k​
hammer [34]

Step-by-step explanation:

{x}^{2}  + (1 - k)x + k - 3 = 0

{x}^{2}    + x - 3 = 0

Use the discramnt formula.

{ {b}^{2} - 4ac }

4 0
3 years ago
3 1/4 - 2 1/3 what is the answer please explain
anastassius [24]

Answer:

it is 0.91<u>6 (</u>the six is repeated. a line under a number means repeated in this case)

Step-by-step explanation:

First you take 3 1/4 and turn it into 13/4 and turn 2 1/3 into 7/3 and transform those into decimals 13/4 = 3.25 and 7/3 = 2.<u>3</u> and subtract which is 0.95 plus the fact that the three is repeated which gets your answer of 0.91<u>6</u> however you should say that if they want you to simplify it to two/three decimals, it is 0.95 but if they want it exact it is 0.91<u>6</u> with the six being repeated

7 0
3 years ago
Clothing sizes are not standardized across brands. Suppose that a large study of women's size 14 jeans revealed that the mean hi
kenny6666 [7]

Using the z-distribution, we have that:

  • The mean hip measurement for the random sample of 15 pairs of women's size 16 jeans is of 44.1 inches.
  • The <u>margin of error</u> is of 0.8 in.
  • The interpretation is: Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.

The first step to solve this question, before building the confidence interval, is finding the sample mean, which is the <u>sum of all observations divided by the number of observations</u>. Hence:

\overline{x} = \frac{44.5+43.0+46.6+42.9+43.7+43.9+42.4+43.2+43.1+44.4+46.1+44.7+44.4+43.9+44.7}{15} = 44.1

The margin of error of a z-confidence interval is given by:

M = z\frac{\sigma}{\sqrt{n}}

In which:

  • z is the critical value.
  • \sigma is the population standard deviation.
  • n is the sample size.

We have to find the critical value, which is z with a p-value of \frac{1 + \alpha}{2}, in which \alpha is the confidence level.

In this problem, \alpha = 0.99, thus, z with a p-value of \frac{1 + 0.99}{2} = 0.995, which means that it is z = 2.575.

Then, the margin of error is:

M = z\frac{\sigma}{\sqrt{n}}

M = 2.575\frac{1.2}{\sqrt{15}}

M = 0.8

The <u>margin of error</u> is of 0.8 in.

The interval is:

\overline{x} \pm M

\overline{x} - M = 44.1 - 0.8 = 43.3

\overline{x} + M = 44.1 + 0.8 = 44.9

The interpretation is:

Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.

A similar problem is given at brainly.com/question/25300297

6 0
3 years ago
Liana started to evaluate the function f(x) = 2x2 – 3x + 7 for the input value 2.
IrinaVladis [17]

Answer: 9

Step-by-step explanation:

4(2) - 3(2) +7=

8 - 6 +7=

2+7=

9

8 0
4 years ago
Read 2 more answers
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