Please help if you know how to do this, thanks

Please Help If You Know How To Do This, Thanks
Please Help If You Know How To Do This, Thanks
Please Help If You Know How To Do This, Thanks

Answers

Answer 1

Answer:

  6) see https://brainly.com/question/18513777

  7) y = 0x^2 +3x -7; (A, B, C) = (0, 3, -7); a linear equation

  8) p ≈ -0.213312t^2 +2.08483t +22.9624; p(11) ≈ 20.08; between 20,000 and 20500

Step-by-step explanation:

7) The result of using a graphing calculator to find a quadratic model for the given points is shown in the first attachment. The equation is ...

  y = 0x^2 +3x -7 . . . . . A, B, C = 0, 3, -7

The A coefficient of 0 tells you this is a linear equation.

__

8) The quadratic regression model* found by my graphing calculator is ...

  p ≈ -0.213312t^2 +2.08483t +22.9624

The "work" is shown in the second attachment. (Apparently, you have a regression tool you're supposed to use.)

Evaluating this equation for t=11 (corresponding to 11 years after 1996), we find ...

  p = (-0.213312·11 +2.08483)·11 +22.9624 = -0.261602·11 +22.9624

  p ≈ 20.084778 ≈ 20.08 . . . . thousands

The population in 2007 is between 20,000 and 20,500.

_____

* We're not sure exactly what is supposed to be rounded to 2 decimal places. Error tends to creep up if the quadratic coefficients are rounded to 2 decimal places, but you may be expected to enter your answer that way.

The population in thousands is "between 20 and 21" when rounded to 2 decimal places. It makes no sense to compute the population (in people) as 20,084.78, rounded to 2 decimal places. We have chosen 20,000-20,500 as the answer to the question about population in 2007, because the question doesn't ask for thousands.

Please Help If You Know How To Do This, Thanks
Please Help If You Know How To Do This, Thanks

Related Questions

what is the value of ÷ 2 1/3

Answers

Answer:

6÷2 1/3

Step-by-step explanation:

What is the x intercept?
Look at the picture.​

Answers

Answer:

-2

Step-by-step explanation:

the x-intercept is where the line of the slope crosses the x-axis

hope this helps :3

if it did pls mark brainliest

Which table represents a linear function?
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2.
3
4
y
3
7
11
15
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1
2.
3
4
у
3
8
15
21
х
1
2.
3
4
y
3
9
3
9
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1
2
3
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3
9
27

Answers

Answer: D

I believe :0

The table which represents a linear function is table 4.

What is a function?

Function is a type of relation, or rule, that maps one input to specific single output.

In mathematics, a function is an expression, rule, or law that describes the relationship between one variable (the independent variable) and another variable (the dependent variable) (the dependent variable). In mathematics and the physical sciences, functions are indispensable for formulating physical relationships.

Linear function is a function whose graph is a straight line

We are given that;

The tables in the question

Now,

The table that represents a linear function is:

X   Y

1   3

2   7

3   11

4   15

The reason this is a linear function is that for each increase in the input value of X by 1, the output value of Y increases by a constant amount of 4. In other words, the rate of change of Y with respect to X is constant at 4, indicating a linear relationship between the two variables.

Therefore, the answer of the function will be table 4.

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Carlos buys a phone that costs $250. He pays a monthly rate of $75. Write a function f(×) for the total amount that Carlos pays for using the phone for x month

Answers

F(x)=250+75x. Hope this helped

-x + 2 = x+4
help please!

Answers

Answer:

x=-2

Step-by-step explanation:

hope this helps

follow me

Answer:

-1

Step-by-step explanation:

-x + 2 = x+4

-x-x = 4-2

-2x = 2

x= 2/-2

x= -1

hope it will help......

I need to find the value of x

Answers

Answer:

I think I already gave the answers to you on your previous question to find the value of y. I gave the x and y answers.

Step-by-step explanation:

x = 98

313 multiplied by t is equal to 180

Answers

Answer:

t= 180/313 or 0.57507987

please help me!!! I will make you brainiest!!!

Answers

The answer is C. thx again for helping me with my paragraph :))))

Answer:

C

Step-by-step explanation:

y-intercept is 3 down and slope is the same

Solve for equation x by graphing -4^x+1=3x-4

Answers

Answer:The answer is B

x=0.75

I’m not sure though

Step-by-step explanation:

You can factor a quadratic function using the completing the square method for any coefficient of the a term. True or false

Answers

Answer:

Step-by-step explanation:

75bdivided by 230 need this answer to

Answers

Answer:

                                   0.32608696

Step-by-step explanation:

Which expression is equivalent to s - 0.78s +0.28s?
0.58
1.5s

O 1-0.55
s – 0.5

Answers

Answer:

0.5s

Step-by-step explanation:

Find the minimum or maximum value of the function y = -x– 4x - 2. Describe the domain and range of the function, and
where the function is increasing and decreasing.

Answers

Answer:  How can this function have a max/min if it’s not a parabola?

When you graph this it’s a line.

According to the Bureau of Labor Statistics, citizens remain unemployed for an average of 15.9 weeks before finding their next job (June, 2008). Suppose you want to show that Louisiana has been effective in getting their unemployed back to work sooner. You take a random sample of 50 citizens who were unemployed six months earlier and ask them to report the duration. You find that the average time spent unemployed was 13.4 weeks. Which of the following statements is the correct alternative hypothesis?
a. -2.64
b. -2.32
c. -2.11
d. -1.28
e. none of these are correct

Answers

Complete Question

According to the Bureau of Labor Statistics, citizens remain unemployed for an average of 15.9 weeks before finding their next job (June, 2008). Suppose you want to show that Louisiana has been effective in getting their unemployed back to work sooner. You take a random sample of 50 citizens who were unemployed six months earlier and ask them to report the duration. You find that the average time spent unemployed was 13.4 weeks with a sample standard deviation of the time unemployed is 6.7 weeks.

1 Which of the following statements is the correct alternative hypothesis?

2 The test statistic for testing the hypothesis is

a. -2.64

b. -2.32

c. -2.11

d. -1.28

e. none of these are correct

Answer:

1  

 The  alternative hypothesis  [tex]H_a  :  \mu < 15.9[/tex]

2

The  test statistics [tex]z =  -2.64 [/tex]  

Step-by-step explanation:

From the question we are told that

     The population  mean value for time  citizens remain unemployed is  [tex]\mu  =  15.9 \  weeks[/tex]

     The  sample size is  n =  50

     The  sample standard deviation is  6.7 weeks.

      The  sample mean value for time  citizens remain unemployed is  [tex]\mu  =  15.9 \  weeks[/tex]

       

     The  null hypothesis is  [tex]H_o  :  \mu \ge 15.9[/tex]

      The  alternative hypothesis  [tex]H_a  :  \mu < 15.9[/tex]

Generally test statistics is mathematically represented as

       [tex]z =  \frac{ \= x  - \mu }{ \frac{s}{\sqrt{n} } }[/tex]  

=>    [tex] z =  \frac{13.4 - 15.9}{\frac{6.7}{\sqrt{50}}}[/tex]

=>     [tex]z =  -2.64 [/tex]  

   

Ken and Leo weighed the same and their total weight was above 130 kg. After a year, Ken has lost 8 kg and is below 60 kg now. How heavy was Ken one year ago?

Answers

Answer:

68 kg

Step-by-step explanation:

PLEASE HURRY 100 POINTS!

Graph x > 2.

Answers

Answer:

see below

Step-by-step explanation:

We know that x > 2  that means the line at x = 2 is dotted since there is no equals sign

We shade to the right since x is greater

Answer:

sea below

Step-by-step explanation:

Analyze the biconditional statement below and complete the instructions that follow.

A polygon is a pentagon if and only if it has five sides.

Express the given biconditional as the conjunction of two conditionals.

A.
If it is a pentagon, then it has five sides. If it is a polygon, then it is a pentagon.
B.
If it is a pentagon, then it is a polygon. If it is a polygon, then it is a pentagon.
C.
If it is a pentagon, then it is a polygon. If it is a polygon, then it has five sides.
D.
If it is a pentagon, then it has five sides. If the polygon has five sides, then it is a pentagon

Answers

Answer:

A polygon is a pentagon if and only if it has five sides.&quot;If this statement is true, then which of the follow… Get the ... The given statement is of the form

Step-by-step explanation:

hope it helps you

Answer:

D.  If it is a pentagon, then it has five sides. If the polygon has five sides, then it is a pentagon

Step-by-step explanation:

Given statements;

      A polygon is a pentagon if and only if it has five sides.

From the statement we see that a pentagon has 5 sides. A body of this structure with 5 sides can be classified as a polygon.

Therefore, this bi-conditional statement is premised on two "if"s,

    If it is a pentagon then we are dealing with a body with 5 sides.

   And if such body has five sides, it is a polygon called pentagon

The correct option is D

Choice A, B and C are logically flawed.

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

The emboldened part we do not know.

B.  If it is a pentagon, then it is a polygon. If it is a polygon, then it is a pentagon

 The emboldened part is flawed.

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

We do not know if all pentagons have 5 sides.

We want to decide whether to employ a human operator or buy a machine to paint steel beams with a rust inhibitor. Steel beams are produced at a constant rate of one every 14 minutes. A skilled human operator takes an average time of 700 seconds to paint a steel beam, with a standard deviation of 300 seconds. An automatic painter takes on average 40 seconds more than the human painter to paint a beam, but with a standard deviation of only 150 seconds. Estimate the expected waiting time in queue of a steel beam for each of the operators, as well as the expected number of steel beams waiting in queue in each of the two cases. Comment on the effect of variability in service time.

Answers

Answer:

Manual painter, expected waiting time = 0.085

Automatic painter expected waiting time = 0.031

Step-by-step explanation:

See attachment

Guadalupe Fue a la mercería a comprar 15.5 m de encaje blanco que necesitaba para la clase de costura. Si cada metro cuesta $5.60, ¿cuanto pago por todo el encaje que necesitaba?

Answers

Answer:

Costo total= $86.6

Step-by-step explanation:

Dada la siguiente información:

Guadalupe Fue a la mercería a comprar 15.5 m de encaje blanco que necesitaba para la clase de costura. Cada metro cuesta $5.60.

Si y= costo total, y x= cost por metro, entonces:

y= 5.6x

Para 15.5 metros:

y= 5.6*15.5= $86.8

Question Details
What is the slope of a line that passes through the
points (-2, 12) and (-6, 8)?

Answers

Answer:

m = 1

Step-by-step explanation:

Use the given points to solve the slope formula.

(-2, 12) (-6, 8)

[tex]m=\frac{y2-y1}{x2-x1}[/tex]

m is the slope, x is the first number in the given point, and y is the second. (It doesn't matter which point you choose to be x1,y1 or x2,y2)

[tex]m=\frac{8-12}{-6-(-2)}[/tex]  (subtracting negative cancels out and becomes adding a positive)

[tex]m=\frac{-4}{-4}[/tex] (the negatives cancel out and become positive)

m = 1

Juan is paid a salary of $2400 biweekly. Find the Juan's earnings per year.

Answers

He earns $124,800 yearly

Answer:

2,400x26=62,400

Step-by-step explanation:

you times it by 26 because he gets paid biweekly

Divide x²-14× +45 by X-9​

Answers

X=15/7 I think this is the right answer if not I’m sorry

what is 6 feet below sea level

Answers

Answer:

-6

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

sea level is 0 and below sea level would have to be a negative and you would takr the number of feet below sea level and that would be your answer in this case its -6

If m∠MNP = 107°, what is m∠MQP?

Answers

Answer:

180 - 107 = 73

Step-by-step explanation:

The median starting salary for new law school graduates is determined by

log(salary) = B0 + B1 LSAT + B2 GPA + B3 log(libvol) + b4 log(cost) + B5 rank + u,

where LSAT is the median LSAT score for the graduating class, GPA is the median college. GPA for the class, libvol is the number of volumes in the law school library, cost is the annual cost of attending law school, and rank is a law school ranking (with rank = 1 being the best).

i. Explain why we expect b5 < 0.
ii. What signs do you expect for the other slope parameters? Justify your answers.
iii. Using the data in LAWSCH85.RAW, the estimated equation is log(salary ) = 8.34 + .0047 * LSAT + .248 GPA + .095 log(libvol) + .038 log(cost) - .0033 rank n = 136, R^2 = .842

What is the predicted ceteris paribus difference in salary for schools with a median GPA different by one point? (Report your answer as a percentage.)

iv. Interpret the coefficient on the variable log(libvol).
v. Would you say it is better to attend a higher ranked law school? How much is a difference in ranking of 20 worth in terms of predicted starting salary?.

Answers

Step-by-step explanation:

1) we would have the expectation that b₅ < 0 because b₅ shows how salary responds to law school ranking. As the rank of law school increases then median starting salary for new law school graduates declines. there is an inverse relation between salary and rank, Coefficient of rank, b5 will be negative since it is less than 0

ii) B₁ is going to be positive because as median LSAT score for the graduating class goes up, so does the salary of graduates. we have B1 >0

B₂ will be positive as college median GPA rises, so does graduate salary.

B₃ will be positive because if the more volumes of book in library, the greater possibility of getting higher salary, so B₃ >0.

B₄ >0 as if annual cost is high , then there would be indictaes more facilities of learning for students, leading to more chances of high salaries , hence B4 >0.

B5<0 this has been explained in 1.

iii) predicted ceteris paribus difference in salary for schools with a median GPA different by one point

= coefficient of GPA

=0.248

= this 24.8% in percentages B₂ tells us that when other factors are held constant,increasing median gpa by 1 would cause 24.8 percent increase in salary predicted.

iv)holding other variable factors constant, increasing the volume in the law library would bring about predicted salary increase by 0.095%

v) due to the inverse relationship between rank of law school and salary, it is better to attend a law school with lower rank than that with higher rank

difference in ranking of 20 = 20*(-0.0033)

= -0.066  x 100

= -6.6%

if rank is lower by 20 units , then we will have salary to be 6.6% higher

A ship travels 200 miles due west, then adjusts its course 30° north of west. The ship continues on this course for 30 miles. Approximately how far is the ship from where it began?

Answers

Answer:

The answers D on Edg

Step-by-step explanation:

Just finished the test

The distance of the ship from the beginning  is 226.48 miles far apart.

What is a triangle?

A triangle is a flat geometric figure that has three sides and three angles. The sum of the interior angles of a triangle is equal to 180°. The exterior angles sum up to 360°.

For the given situation,

The diagram below shows the travelling of ship from A to C.

Let sides a = 30 miles, c = 200 miles,

The measure of angle B is [tex]\angle CBA = 180-30[/tex]   [∵ Supplementary angle]

⇒ [tex]\angle CBA = 150[/tex]

Here two sides and one angle of triangle are provided.

The other side of the triangle, that is the distance traveled by the ship can be found by using the law of cosines.

The formula of law of cosines,

[tex]b = \sqrt{a^{2}+c^{2}-2ac (cosB ) }[/tex]

On substituting the values,

⇒ [tex]b = \sqrt{30^{2}+200^{2}-2(30)(200) (cos150 ) }[/tex]

⇒ [tex]b = \sqrt{900+40000-12000(-0.8660 ) }[/tex]

⇒ [tex]b = \sqrt{40900+10392 }[/tex]

⇒ [tex]b = \sqrt{51292}[/tex]

⇒ [tex]b=226.477[/tex] ≈ [tex]226.48[/tex]

Hence we can conclude that the distance of the ship from the beginning  is 226.48 miles far apart.

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Jill counted 20 pigs and chickens in the farm. Jack counted a total of 54 legs for the animals. How many chickens were there in the farm?​

Answers

Answer:

Let the number of chickens in the farm = x

Let the number of pigs in the farm = y

Number of legs of chickens = 2*x (since chickens have 2 legs)

Number of legs of pigs = 4*y (since pigs have 4 legs)

We are given that there are a total of 20 animals (pigs + chickens)

so, number of chickens + number of pigs = 20

x + y = 20

We are given that there is a total of 54 legs in the farm

so, legs of chickens + legs of pigs = 54

2x + 4y = 54

Solving for number of chickens and pigs:

from the question, we have deduced that:

x + y = 20

2x + 4y = 54

taking the value of x from the first equation and using it in the second equation

x = 20 - y

2(20-y) + 4y = 54

40 - 2y + 4y = 54

40 + 2y = 54

2y = 14

y = 7

Using this value of y in the first equation:

x + y  = 20

x + (7) = 20

x = 13

Therefore, there are 13 chickens and 7 pigs in the farm

5/8 + (-7/8) how do i get the answer

Answers

Answer:

-0.25 = -1/4

Step-by-step explanation:

The answer ( depending on what you're asking ) either fraction or decimal is this:

Decimal: -0.25

Fraction: -1/4

Hope this helps! <3

Answer:

Your answer is - 1/4

Step-by-step explanation:

I'm the best at math my grade is 100 so believe me

The ratio of people who prefer chocolate chip cookies to oatmeal cookies is 5:2. If there were a total of 56 people surveyed, how many people prefer chocolate chip cookies?

Answers

Answer:

40

Step-by-step explanation:

5 + 2 = 7

56 ÷ 7 = 8

8 × 5 = 40

Which statement must always be true?
4
13
Choose the correct answer below.
O A. If Z1 Z2, then gl|h.
OB. If 21-23, then gl|h.
O C. If Z2 = 24, then jl|k.
OD. If Z3 Z4, then illk.

Answers

the statement c will always be true in the end
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