Solve x2 - 4x + 1 = 0.
x= 2 + 2i15
x = 4+ V3
x = 2/3
x= -2-3

Answer:

[tex]y = \frac{1}{4}x +\frac{7}{4}[/tex]

Step-by-step explanation:

Given

[tex]f(-3) = 1[/tex]

[tex]f(13) = 5[/tex]

Required

Determine the linear function

A function is of the form:

[tex]y = f(x)[/tex]

Writing the given parameters in (x,y) format, we have:

[tex]f(-3) = 1[/tex] implies (-3,1)

[tex]f(13) = 5[/tex] implies (13,5)

So, the x and y values are:

(-3,1) and (13,5)

i.e.

[tex](x_1,y_1) = (-3,1)[/tex]

[tex](x_2,y_2) = (13,5)[/tex]

First, we need to determine the slope using:

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

[tex]m = \frac{5 - 1}{13 - -(3)}[/tex]

[tex]m = \frac{4}{13 +3}[/tex]

[tex]m = \frac{4}{16}[/tex]

[tex]m = \frac{1}{4}[/tex]

The equation is calculated as thus:

[tex]y - y_1 = m(x - x_1)[/tex]

Where

[tex](x_1,y_1) = (-3,1)[/tex]

[tex]m = \frac{1}{4}[/tex]

[tex]y - 1 = \frac{1}{4}(x - (-3))[/tex]

[tex]y - 1 = \frac{1}{4}(x +3)[/tex]

[tex]y = \frac{1}{4}(x +3) + 1[/tex]

[tex]y = \frac{1}{4}x +\frac{3}{4} + 1[/tex]

[tex]y = \frac{1}{4}x +\frac{3+4}{4}[/tex]

[tex]y = \frac{1}{4}x +\frac{7}{4}[/tex]

Step-by-step explanation

x=-1

x=4

f(x)= x^3+5x^2

Answer:

75  14  12,600  781  128  399  26.13  40.80    12,750

Step-by-step explanation:

Hope this helps

Answer:

7. 100

8. 14

9. 12600

10. 639

11. 128

12. 399

13. Discount price= 12.87 Sale price= 26.13

14. 40.80

15. 12,750

I'm not 100% on #15 but the rest are good.

Step-by-step explanation: When you multiply the percent by the other number that gives you the difference. So then get the original number and either add or subtract the difference from the original number to get your answer. Add if increase Subtract if decrease.

So 7-11 you just have to multiply the percent by the other number.

7. 25*300% or 25*3 = 75  25 + 75 = 100

8. 56*.75 = 42  56-42= 14

9. 12000*.05 = 600 (since it is an increase add 600 to 12000) = 12600

10. 710*.10= 71 (71 is the difference so do this) 710-71= 639

11. 160*.20 = 32 (decrease) 160-32= 128

12. 380*.05=19 (increase) 380+19 = 399

13. 39*.33= 12.87 (decrease)

Discount price = 12.87

Sale price= 39-12.87= 26.13

14. 48*.15 = 7.20 (decrease) 48-7.20= 40.80

15. 3,000*3.25 = 9750 (increase) 9750 + 3000= 12,750

Answer:

a

  [tex]P(a | e') =  0.22[/tex]

  [tex]P(b | e') =  0.28[/tex]

  [tex]P(c | e') =  0.33[/tex]

b

  [tex]P(a | e' , d' , b') = 0.57  [/tex]

Step-by-step explanation:

From the question we are told that

   The probabilities are

Supplier  chosen            A                     B                    C            

Probability                P(a) = 0.20       P(b) =  0.25   P(c) =  0.15      

                                       D                      E

                                P(d) =  0.30     P(e) = 0.10

Generally the new probability of companies A being chosen as the sole supplier this year given that supplier E goes out of business is mathematically represented as below according to Bayes theorem

[tex]P(a | e') =  \frac{P (a \  and \  e')}{P(e')}[/tex]

      [tex]P(a | e') =  \frac{P (a)}{P(e')}[/tex]

     [tex]P(a | e') =  \frac{P (a)}{1- P(e)}[/tex]

=>   [tex]P(a | e') =  \frac{ 0.20}{1- 0.10}[/tex]

=>   [tex]P(a | e') =  0.22[/tex]

Generally the new probability of companies B  being chosen as the sole supplier this year given that supplier E goes out of business is mathematically represented as below according to Bayes theorem

[tex]P(b | e') =  \frac{P (b \  and \  e')}{P(e')}[/tex]

      [tex]P(b | e') =  \frac{P (b)}{P(e')}[/tex]

     [tex]P(b | e') =  \frac{P (b)}{1- P(e)}[/tex]

=>   [tex]P(b | e') =  \frac{ 0.25}{1- 0.10}[/tex]

=>   [tex]P(b | e') =  0.28[/tex]

Generally the new probability of companies C  being chosen as the sole supplier this year given that supplier E goes out of business is mathematically represented as below according to Bayes theorem

[tex]P(c | e') =  \frac{P (c \  and \  e')}{P(e')}[/tex]

      [tex]P(c | e') =  \frac{P (c)}{P(e')}[/tex]

     [tex]P(c | e') =  \frac{P (c)}{1- P(e)}[/tex]

=>   [tex]P(c | e') =  \frac{ 0.15}{1- 0.10}[/tex]

=>   [tex]P(c | e') =  0.17[/tex]

Generally the new probability of companies D  being chosen as the sole supplier this year given that supplier E goes out of business is mathematically represented as below according to Bayes theorem

[tex]P(d | e') =  \frac{P (d \  and \  e')}{P(e')}[/tex]

      [tex]P(d | e') =  \frac{P (d)}{P(e')}[/tex]

     [tex]P(d | e') =  \frac{P (d)}{1- P(e)}[/tex]

=>   [tex]P(d | e') =  \frac{ 0.30}{1- 0.10}[/tex]

=>   [tex]P(c | e') =  0.33[/tex]

Generally the probability that  B, D , E  are not chosen this year is mathematically represented as

      [tex]P(N) =  1 - [P(e) +P(b) + P(d) ][/tex]

=>       [tex]P(N) =  1 - [0.10 +0.25  +0.30 ][/tex]

=>       [tex]P(N) =  0.35[/tex]

Generally the probability that A is chosen given that E , D , B  are rejected this year is mathematically represented  as

      [tex]P(a | e' , d' , b') =  \frac{P(a)}{P(N)}[/tex]

=>     [tex]P(a | e' , d' , b') =  \frac{0.20 }{0.35 }[/tex]    

=>     [tex]P(a | e' , d' , b') = 0.57  [/tex]

Answer:

76

Step-by-step explanation:

22-3=19

19x4=76

Answer:

Hypothesis

Step-by-step explanation:

 a polygon has five sides Conclusion: it is a pentagon If a polygon has five sides, then it is a pentagon.

hope this helps

Answer:

what are the fractions?

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

x-7=18 because x would be the number with "7 less"  being the "-7."

Answer:C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

90

if 15 is 1 6th then yo need 5 more 15s to find out the whole number

Answer:

c  5x -15y =1

Step-by-step explanation:

5x-15y=1

-5x -15y= 1 -5x     change the signs on both sides of the equation

     15y = -1 +5x      divide both sides by 15

         y = -1/15 + 1/3 x    Reorder the terms

         y = 3x-15

              :)

All options are wrong here.

Given equation is  [tex]y=3x-15[/tex].

the equation given here is in form of [tex]y=mx+c[/tex] . The general equation of any straight line where m is the gradient of the line (how steep the line is) and c is the y -intercept (the point in which the line crosses the y -axis) .

We have to write [tex]y=3x-15 \\[/tex] in standard form.

The standard form for linear equations in two variables is Ax+By=C.

Now we convert [tex]y=3x-15[/tex] in standard form.

Here [tex]y=3x-15\\[/tex]

[tex]y-3x=-15\\\\-y+3x=15[/tex]

[tex]3x-y=15[/tex]

But no options match with the above standard form of equation.

Hence all options are wrong here.

For more details on standard form for linear equations follow the link:

https://brainly.com/question/7380540

Answer:

He can buy 8 more apples because 16+6=22-30=8

Step-by-step explanation:

Hope it helps :)

Have a good day/night

Brainliest pls?

Answer:

the answer is 4.98

Step-by-step explanation:

you subtract 0.17 from 5.15 you will get 4.98

Answer:

C

Step-by-step explanation:

 [tex]\bold{Hello!}\\\bold{Your~Answer~Is~Below!}[/tex]

______________________________

 [tex]\bold{Solutions~Steps:}[/tex]

[tex]1.)~Simplify~everything~into~decimal~form:[/tex]

[tex]2.)~Round~to~the~nearest~hundredth :[/tex]

[tex]3.)~Order~them~in~decreasing~order,~(Greatest~to~Least:)[/tex]

______________________________

 [tex]\bold{Answer:}[/tex]

______________________________

 [tex]\bold{Hope~this~helps,}\\\bold{And~best~of~luck!}\\\\\bold{~~~~~-TotallyNotTrillex}[/tex]

Answer:

А. The solution to this system is nonviable because it results in a fractional number of tickets.

Step-by-step explanation:

Let x represent the number of adult tickets, y represent the number of child ticket and z represent the number of senior ticket.

Since the number of purchased ticket is 17, hence:

x + y + z = 17         (1)

The total cost of tickets is $141.50, hence:

10x + 7y + 8.5z = 141.5       (2)

they are purchasing 2 more senior tickets than adult tickets, therefore:

x = z + 2        (3)

Solving equation 1 2 and 3 simultaneously gives:

x =17/3, y = 23/3, z = 11/3

Therefore the solution to this system is nonviable because it results in a fractional number of tickets.

Answer:

А.The solution to this system is nonviable because it results in a fractional number of tickets

Step-by-step explanation:

took the test on edmentum and got it correct

Answer:

4.62 ? if we're not rounding to the nearest tenth

exact:

4.61867098

Answer:

The age of pluto is:

5,560,000,000 years old = 5.56 × 10⁹ years old

x = 5.56

y = power of 9

Step-by-step explanation:

Pluto is 5,560,000,000 years old. Estimate the age of Pluto by writing it in the form of x×10y years, where x and y are single-digit numbers.

We write this in standard form or scientific notation.

5,560,000,000 years old = 5.56 × 10⁹ years old

x = 5.56

y = power of 9

Answer:

The square root of 16=4, 4x2=8, x2=8.

Step-by-step explanation:

Answer:

there is no solution for this equation

Answer:

-1.4

Step-by-step explanation:

opposite of -1.4 = 1.4

opposite of the opposite of -1.4 = the opposite of 1.4 = -1.4

Answer:

Decision rule  is  

Fail to reject the null hypothesis

 The conclusion is  

There is sufficient evidence that indicate that there is a significant difference between the two treatments

Step-by-step explanation:

From the question we are told that  

    The sample size is  n =  12

    The first  mean is  [tex]M_1  =  55[/tex]

    The variance is  [tex]s^2_1 =  8[/tex]

    The second mean is  [tex]M_2  =  52[/tex]

     The second variance is [tex]s^2_2 =  4[/tex]

Let the level of significance be  [tex]\alpha  =  0.05[/tex]

The null hypothesis is  [tex]H_o  :  M_1 = M_2[/tex]

The alternative hypothesis is [tex]H_a  :  M_1 \ne M_2[/tex]

  Generally the test statistics is mathematically

     [tex]t = \frac{M_1 - M_2 }{ \sqrt{\frac{s_1^2}{n_1} +\frac{s_2^2}{n_2}} }[/tex]

=>   [tex]t = \frac{55 - 52 }{ \sqrt{\frac{8}{12} +\frac{4}{12 }} }[/tex]

=>   [tex]t = 1.1619 [/tex]

Generally the degree of freedom is mathematically represented as

      [tex]df = 12 -1[/tex]

=>    [tex]df = 11 [/tex]

Generally  from the t- distriibution table the critical  value  of  [tex]\alpha[/tex] at a degree of freedom of [tex]df = 11 [/tex]  is

    [tex]t_{0.05 , 11} =  2.20098516[/tex]

Here given that the critical value is greater than the t statistics value the

Decision rule  is  

Fail to reject the null hypothesis

 The conclusion is  

There is sufficient evidence that indicate that there is a significant difference between the two treatments

Answer: Amount of water that is turned in a minute is 5.2d. Given the fact that initially was 350 gallons of water everything you pour needs to be added to the initial amount. So the answer is V(x) = 350 + 5.2x   

thank me plz brainliest

Step-by-step explanation:

Answer:

True : It is an example of a continuous variable

Step-by-step explanation:

Numerical variables acn be classed as either being discrete or continuous based on whether the values in the data set are finite and countable or not.

Discrete variables are characterized by possessing a finite number of possible values which are countable and usually do not involve decimal numbers in between successive whole numbers.

On the other hand continuous variables are non finite and usually contains a lot of points in between possible whole numbers such as in the scenario above, the race time for the students take up any number within minutes, seconds and milliseconds. Hence, making the possible Numner of values impossible to predict or state.

The Least Common Denominator of the fractions 5/8, 1/2, and 5/6 is 24.

The smallest number that can serve as a common denominator for a group of fractions is known as the least common denominator (LCD), also known as the lowest common denominator. The "smallest non-zero common number," a multiple of both numbers, is the least common multiple of two numbers.

Here, the given fractions are 5/8, 1/2, and 5/6.

So, we have to find the least common multiple of 8, 2, and 6 [Since they are the denominators of our given fractions].

8 = 2*2*2

2 = 2*1

6 = 2*3

So LCM of 8, 2, and 6 is 2*2*2*3 = 24

Therefore the Least Common Denominator of the fractions 5/8, 1/2, and 5/6 is 24.

Learn more about Least Common Denominator here -

https://brainly.com/question/12839053

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Answer:

d

Step-by-step explanation:

it would be 5 x 4/1 and u would get 20/1

- when dividing with a fraction u have to do keep, change, flip

or just plug it into a calculator :))

Answer:

D. 20

Step-by-step explanation:

5 / (1/4) =20

5/.25=20

Answer:

12 only

Step-by-step explanation:

It means x is zero, and the only point on x=0 is 12 :)

According to the graph the function  f(0) is  12 only .

The x-intercept is the point where a line crosses the x-axis or at y = 0, and the y-intercept is the point where a line crosses the y-axis or at x =0.

According to the question

The graph shows the function in which

f(0) is

i.e

x = 0  or y intercept

Now, according to the graph

at x = 0 , y = 12

Or

f(0) = 12

Hence, The function  f(0) is  12 only .

To know more about intercepts here:

https://brainly.com/question/14180189

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Answer:

hehaw

Step-by-step explanation:

0.19, 91 hundredths, then the equation