Critical Thinking/Math

9,736 results, page 40
1. Statistics

In the population of typical college students, _ 5 75 on a statistics final exam _X 5 6.42 . For 25 students who studied statistics using a new technique, X 5 72.1. Using two tails of the sampling distribution and the .05 criterion: (a) What is the
2. English

I am writing an essay about James Baldwin's Go Tell It on the Mountain, but the essay prompt asks me to disagree or agree with the interpretation of an critical essay we read about this book. For my essay, do I state whether I agree with the article and
3. calc

Average daily temp,y, is y=45-23cos(2pi(x-32)/365), where x is time in days, x=1, corresponds to Jan 1 and y is temp in degrees F. Determine the period of the function. Determine critical numbers, over one period. Determine relative extrema, what does
4. production and operations management

All of the following statements about ABC analysis are true except: A. Inventory may be categorized by measures other than dollar volume B. It categorizes on-hand inventory into 3 groups based on dollar volume C. It states that all items require the same
5. statistics.. URGENT!! PLZ!!

The margin of error is: a. the difference between the point estimate and the true value of the population parameter b. the critical value times the standard error of the estimator c. the smallest possible sampling error d. none of the above Complete the

The High School Step Team Karla’s cousin Jade urged her to join the step team. “This afternoon you should definitely try out!” Jade suggested after the final bell rang. “I know she wants the best for me,” Karla thought to herself, “but I’m
7. Physics

A physics student of mass mm = 100 kg gets a summer job painting houses. On his first project, he builds a platform using large pine board with a mass of mb = 60 kg The board has an overall length of L = 8.5 meters and set on two 1 meter tall saw horses so
8. algebra

Read the article about Body Mass Index (BMI) on page 151 of Elementary and Intermediate Algebra. Use the formula given using pounds and inches for finding the BMI at the end of the first paragraph in order to find the four intervals the article mentions:
9. Health

What type of drugs are artificially prepared in pharmaceutical laboratories? A. Scheduled drugs B. Controlled substances C. Synthetic drugs D. Mineral-Based steriods im thinking D what do you guys think?
10. Science

Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element? I will be happy to critique your thinking on this.

3. Determine the t-critical value for a two-sided confidence interval in each of the following situations. a. Confidence level = 95%, df = 15 b. Confidence level = 99%, n = 5. c. Confidence level = 95%, n = 15 d. Significance level = 0.01, df = 37
12. math

In a random sample of 80 ears of corn, farmer Carl finds that 11 of them have worms. Carl claims that less than 20% of all his corn has worms. Test this claim at the 0.05 significance level. (a) What is the test statistic? zp̂ = (b) What is the P-value of
13. sssc

Suppose we test H0 : p = .3 versus Ha : p ≠ .3 and that a random sample of n = 100 gives a sample proportion p = .20. a: Test H0 versus Ha at the .01 level of significance by using critical values. What do you conclude? b: Find the p-value for this test.
14. Science

Q12: A light ray is travelling from a medium with a larger index of refraction to a medium with a smaller index of refraction. Describe what happens as the angle of incidence gets larger and larger. Include the concept of the critical angle in your
15. celebrating Diversity

Understanding culture is critical for anyone who works with young children because A. the children in our care most often have the same cultural beliefs as we do. B. our cultural beliefs effect every interaction that we have. C. we want children to
16. math

What is the basic principle that can be used to simplify a polynomial? Possibly these sites will be helpful. I searched Google under the key words "simplify polynomial" to get these possible sources:
17. statistics

Will is convinced that there is a relationship between a woman's age and how old she acts. In order to test this , I asked the women in my family their ages and then gave them an age acting test. Check to see if wills hypothesis is true using p value 0.5.
18. Plz help @Reed

Which statement is best supported by the fact that Mercy Otis Warren wrote plays critical of the British? Warren was one of the most popular playwrights of her day. Colonial women were interested in and informed about politics.*** Patriot women believed
19. physiology

anaerobic respiration is triggered when the ratio of ________falls below a critical level. a.carbon dioxide supply to oxygen need b.oxygen supply to glucose need c.glucose supply to glucose need d.oxygen supply to oxygen need the electron transport chain
20. math

Help!!I need to understand how to estimate the sum or difference for fractions..2 and 2 thirds plus 3 fourths,1 and 7 eighths minus 1 and a half,and 3 and 9 tenths minus 1 and 2 fifths,please help,not good with math
21. algebra

Can someone please help me with this math problem? Thanks. Let g(x)=x^2-5 and h(x)=3x+2. Perform the function operation. -2g(x)+h(x) That would be -2x^2 +10 + 3x +2 = -2x^2 + 3x +12. oh, thanks! I understand. I have another problem I'm unsure of. g(x)*h(x)
22. English

Wolunteering at an orphanage. I have worked at an orphanage. There were a lot of work to do. I talked with children there and helped them with math. I taught them English, too. I was happy because I could help others. (Would you check the passage above?)

It is the beginning of a new year and you just received the landlord’s building expense pass through reconciliation for the previous year. Assuming the math is correct, what are the two most important things to look for?
24. Math

I am having in my fifth grade math class. We are learning Number and Operations Base Ten. How can I solve this question? I have 13 hundreds, 1 tens, 7 ones, 5 tenths, and 19 hundredths. What number am I?
25. Math

Could someone please help me with this math problem? Solve using the multiplication principle. Give the answer in set-builder notation. -4/5 less than or equal to -8x. I want to say that I multiply both sides by 5 but I'm not sure. I'm confused with this
26. math

If a stone is dropped from rest and falls under gravity with an acceleration of 10m/s2, how long will it take before the stone is travelling at 25m/s? Can you show me how to work this out with math rules. I do not get it. Thanks
27. Math 7

Today I told my math teacher about this site and I use it a lot whenever I need help with my homework, and she said that it's good and she is very proud of me . :) :) :) I love this site it's very helpful. This help me got into the Honor Roll and my other
28. Math

I missied school Friday and am not sure how to do my math homework. here is one problem. If someone will help me figure this out and explain it I would be able to figure the rest out. ** Write two values of x for which the i nequality is true 4.5
29. math literacy, all sciencez

I'm a student doing grade 12 my subjects are math literacy, geography, life sciences,physical sciences,L.o ,xitsonga and English and would really want to know the best career path or choice for me.
30. algebra

Hey I am trying to help my son in math. The question is, The scale of a district map is 1 over 10000. Find the distance on the map, in centimeters, for each of the following distances. a) 800m b) 5 km I need to see how this is worked out.
31. Math- consecutive intigers

A student opens a math book to two consecutive pages with a sum of 1640. What are the two pages? I would need one odd number and one even. 819 and 820 are as close as I can come. What am I missing?
32. phomolong secondary school

i am a grade 11 learne,i cant choose the that is good for me from the following subject history,geography,life science,sepedi,life orientation,english,math literacy.
33. Statistics

If many random samples of 64 students who took the second midterm examination in Math 10 are taken, what is the 95th percentile of the average time to completion for these samples? Explain what this number means.
34. Elementary Math

This is going to seem like a simple question but how do i solve this without dividing.. 5th grade math mom Question: Lester's car can go 15.4 miles on 1 gallon of gas. How far can he go on 0.7 gallons? Thanks
35. TIP MATH!

Explain how mental math can be used to estimate a 15% tip on a taxi ride that costs \$23.25. PLZ HELP! BE VERY Descriptive on how you did this! I'm Sick Today So I've Barely Have Brains To Do This Today, So HELP!!!
36. math analysis

(1/a)+(2/a^2)=0 Solved for zero I'm unsure about the process to solve this, when I do it like my teacher says, it doesn't work. This is for an online advanced math class in which you get three tries to solve the problem. I have already used two. Any help
37. math

Rebecca walked 0.25 mile on Tuesday and 1.6 miles on Wednesday. How many miles did she walk altogether? Write a vertical math sentence to solve the problem
38. math

ms.joliet gave a math quiz to see how her small group was doing. what score would make the median 90, the mode 85, and the range 20 if she had the numbers listed below 85,85,90,?,100,85,80,100,90
39. algebra 1

find the complement and the supplement ofeach angle measure 1)130 2) 11 3) x,(x+20) http://www.wtamu.edu/academic/anns/mps/math/mathlab/beg_algebra/beg_alg_tut33_geom_ans.htm 72+27a+a2
40. Calculus

So I have a math problem that says that a free-falling body near the surface of the earth accelerates downward at a constant of 32 ft/sec^2. so for the graph a(t) it would just be a straight line across 32 no matter what time, or in other words a(t)=32.
41. Algebra

I am great at math but for some reason can not wrap my brain around Algebra for the world! Please Help!! Im stumped! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -3x –
42. math-11

okay this is the frst day of grd 11 math and i am doing review and i don't remember anything what do they mean when they say " determine the velue of the three primary trigonometric ratios for

Please help me, my son struggles in the 6th grade. I am afraid that he might have to repeat again. He has low grades in reading and math.I have spoken with his teachers, and they say lack of motivation. How do i help him so he can do what he needs to. I
44. Physics HELP

an object 3.00 cm high is placed 20.0cm from a convex mirror with a focal length of magnitude 8.00 cm. Find the position of the image. (Im using 1over20.00 + 1overQ = 1over-8.00) and the answer is q= -5.71cm. can someone tell how to do the math.. I suck at
45. geometry

i need help with this geometry prblem my math book is online on this site: w w w . k e y m a t h . com / D G 3 the class passcode is: 1574-4c524 The chapter is 0 Lesson 0.2 pg. 9 problem number 6 REMEMBER 4-FOLD SYMMENTRY IS NEEDED !!! URGENT !!!
46. Math

Using the terms factor,divisor,multiple,product,and divisible write as many statements about 6x8=48. My son is in learning support and has this problem and I don't know how to help him I am not good at math. Thank you for any assistance. Tyrone's mom

Ashley, Jonathan, Sarah, Carlos, and Tanya all made the finals of the National Math Fair Competition last year. Before the final round began each one had to shake hands with all the others. How many handshakes were there? I am not really sure but the
48. geometry

i need help with this geometry prblem my math book is online on this site: w w w . k e y m a t h . com / D G 3 the class passcode is: 1574-4c524 The chapter is 0 Lesson 0.2 pg. 9 problem number 6 REMEMBER 4-FOLD SYMMENTRY IS NEEDED !!! URGENT !!!
49. MATH HELP ASAP

Find the area for the circle (use 3.14 for pi). Show your work. Round to the nearest tenth.the radius is 23yd I really need help i'm treble at this type of math and i'm gonna fail if I don't have this question rigT!! THANKS EVERY ONEEEE!!!!

USE MENTAL MATH TO ADD OR SUBSTRACT: USING COMPATIBLE NUMBERS 1. 80+79+20 2. 308+95+5 3. 480+255+20 4.365+289 5. 523-198 6. 537+180 7. 325+239+75 8. 87+38+62 9. 4500-280
51. Chemistry II

Here is information that you will need to help me solve my poblem: C. (Given the values for m,p,and n caculate the rate constant k for each mixtureby simply substituting those orders, the initial concentrations, and the observed rate from the table....)so
52. Calculus

1. Use the Mean Value Theorem to find an x-value where the instantaneous slope=average slope over the given interval: f(x)=(9-x^2)^(1/2) on [-3,2] I have done three chapters of Calculus already and I never have had to check for extraneous roots. So, my
53. physics

A hunter finds his target standing on top of a frozen lake. He shoots with his rifle but in doing so, he too was thrown back over the lake and injured himself. Why did this happen? I'm thinking Newton's 3rd law but aside from that don't really know how to
54. chemistry

At ph of 12 what charged groups would be present on glycine I said a NH2+ and coo- because a base accepts protons. Thank you I am not an organic chemist; however, I wonder, at a pH of 12, how there would be sufficient H^+ to form the NH2^+ ion? I can see
55. CHEM (DrBob222)

I had posted the question to that previous chem question, regarding Mo & V...they said that it should have been correct. What I am thinking that I was missing...must have been that I did not include 4s & then just not fill it. I had excluded it from my
56. science

1) How do decomposers increase the fertility of soil? A) By storing moisture in the soil. B) By breaking down and digesting the remains of dead organisms. C) By making spaces for air and water. D) By burrowing deep below topsoil. I am thinking is is either
57. Maths (Calculus)

A current i = 50sin 100πt mA flows in an electrical circuit. Determine, using integral calculus, its a) Mean Value b) RMS Value each correct to 2 decimal places over the range t = 0 to t = 10 ms I need to do this two way so I was thinking of using the
58. science asap

1) How do decomposers increase the fertility of soil? A) By storing moisture in the soil. B) By breaking down and digesting the remains of dead organisms. C) By making spaces for air and water. D) By burrowing deep below topsoil. I am thinking is is either
59. english

Using a single formatting _____ helps to make reading researched information easier;it lets the reader know what to expect.  A. Citation  B. Text  C. Style  D. Website  My answer was b it was wrong so I'm thinking the answer is c
60. Psychology

Change your thinking(Title of my reseach paper) How do I plan to support my thesis with compelling arguments and counterarguments. My thesis statement is," Even though we experince situation that demonstrate this simple principle- the way we think
61. Economics.

The buying and selling of government securities to alter the supply of money are: A. a painful necessity. B. Open market operations. C. equalizing the required reserve ration. D. tight money policies. I’m thinking its B.
62. English

Does Hamlet reach enlightenment? I personally think not because he is still unaware that he has become exactly like Claudius and dispute saying things that virtuous and just he is hypocritical in his actions. Also follow up question: What did Hamlet die
63. From Theory to practice

. A very young child takes his sock off. The caregiver puts it back on. This process is repeated over and over. The child is engaging in _______ play.A. constructive B. rule-based C. functional D. dramatic Answer D but I'm thinking about C
64. Physics

A rock is thrown vertically up into the air. It reaches a maximum height 15m above point where it was released. What is its initial velocity? a) 17 m/s b) 26 m/s c) 14 m/s d) 20 m/s I know the answer is a) 17 m/s and I got it wrong thinking it was d) 20
65. physics

A ray of light traveling in air strikes the surface of a liquid. If the angle of incidence is 33.5◦ and the angle of refraction is 19.8◦, ﬁnd the critical angle for light traveling from the liquid back into the air. Answer in units of◦
66. Psy230

How is personality developed? My answer: I believe it is through nature and nurture. Genetics because a good deal of who you are comes from the DNA of both parents. I believe it is already encoded in the way we are suppose to be. Then with the environment
67. english

Hi, I have to compare Crossing Brooklyn Ferry by Walt Whitman to modern day time. The last couple of journal entries I've compared to well known songs and their lyrics. I'm thinking of comparing it to an important event or movie, but I'm not sure what to
68. physics

A 78 kg volleyball player jumps and leaves the ground with a vertical velocity of 3.5 m/s. By thinking about the conservation of energy in a freefalling object, work out how high their centre of mass would reach at the top of their jump and present your
69. Help with introduction

Sorry, about the other post.. I didn't know I wasn't going to be able to put more information in the question. Well the thing is I am doing the VFW essay for my history class. We are suppose to write about "My role in honoring America's veterans" but I'm
70. Grammar

After a few loose 2-0 Vicryl sutures were used, the fifth toe rotation flap was trimmed to fit the base of both the fourth and fifth previous digits. Question: not a run-on- not a comma splice not a complete sentence Answer: Thinking it is a fragment

Hi, I have to compare Crossing Brooklyn Ferry by Walt Whitman to modern day time. The last couple of journal entries I've compared to well known songs and their lyrics. I'm thinking of comparing it to an important event or movie, but I'm not sure what to
72. Calc One

The function C(m) = -.41m^2 + 6.7m - 44/ .7m represents Miles Traveled per lb. of CO 2 released as a function of speed(in MPH) for a hyundai Sontana. the domain of this function is [10,90]. A) calculate C'(m) B)find the critical points of C(m). C)Where
73. Psychology

5. Why is confidentiality critical in counseling? (I chose D) A). Clients often share information that is incriminating. B). In order to build a trusting relationship, the client and the counselor need to share privileged information. C). Clients need to
74. Grammar

Which of the following is a complex sentence? A.After the class, we all went to Alec's house. B.Alec's brother John was home, but his sister Cynthia wasn't. C. Alec suggested we all go to the neighborhood pool. I'm thinking the answer is A, but I'm not too
75. human resources

Hi, What is the most critical factor in setting up a goal based performance appraisal system? A. Choosing the most crical incidents on which to base goals B. Emphasizing short term over long term goals C. Giving emplyees some freedom in their choice
76. English 12 Literature

Critical Reading Identify the letter of the choice that best answers the question. According to Bede, what is true of Ireland? At the end of Morte d’Arthur, the narrator says he is not sure what happened to King Arthur. Some say he was buried by a hermit
77. Chemistry

Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I
78. history

The automobile facilitated the idea of worshipping at the altar of materialism. The development of the automobile helped to change the American culture by allowing individuals another avenue to show wealth and treasure it, two critical elements of the New
79. math

Write the answer to the problem as an algebraic expression. The product of two numbers is 30. One of the numbers is r. What is the other number? Our choices are: a) r/30 b) 30/r c) 30-r d) 30r I believe the answer is b but am thinking it may be c, any
80. Politics

What does an authoritarian system thrive on? I was thinking about something like crisis (economic or social) etc that can help an authoritarian system implement their agenda. I need more definite words, though. Help?
81. To Fay1985 - math

Your post was removed. Please tell us your thinking on the 25 questions you posted. Attempt some answers, and we'll be glad to help you. Also -- I don't believe that you posted complete information for many of the questions.
82. Physics

The displacement of an object in SHM is given by y(t) = (7.1 cm)sin[(1.64 rad/s)t]. What is the frequency of the oscillations in Hz? I'm completely stuck here. I was thinking that frequency = 1/t. I'm stuck with the information given. Please help!

colin is thinking of a group of numbers between 40,000 and 60,000 that rounds to 54,450 .Use an organised list to fing Collins numbers
84. math

2/3 over 10 equals 1.8/r solve for r. (2/3)/10 = 1.8r. First, invert and multiply the denominator; i.e.,10. (2/3)*(1/10) = 1.8/r 2/30 = 1.8/r Now cross multiply. 2r = 30*1.8 2r = 54 Now divide both sides by 2 2r/2 = 54/2 r = 27 check my thinking. check my
85. English

I have to write a wisdom poem for my assignment. It has to be about any kind of wisdom that inspires you. im having trouble thinking of some topics. can you give me 5-6 topics i can use for my essay thank you :)
86. Algebra I

I am tying to determine whether the graph pairs below are parallel. x+12=y and y-x=-8. I have found the slope to x+12=y is 1. But I can't determine the slope for for y-x=-8. I am thinking maybe it is undefined, but I am not sure, since I am really new at
87. Patho - Hyperkalemia and Heart Attacks

Could someone please explain why an increase in potassium would cause a decrease in HR? I need someone to really dumb it down for me so I can fully understand. i was thinking that more Ka+ would increase the HR but in my lesson, it said it would slow down
88. Math

Cerulean City is 20 miles from home. We have gone 15 miles. What fraction of the distance have we gone? We have gone ? of the distance. (My thinking: I'm not sure, but I have a thought that you are supposed to divide 20 divided by 5.)
89. physics - energy

1) What are the 3 basic forms of energy? Since there are so many, I'm thinking of kinetic and potential, but what would be the third? 2)The increase in potential energy of any system is equal to the output ___.
90. chemistry

In the Bohr model, which is the lowest energy state available for an electron? A. nth B. excited state C. first state D. ground state Im thinking the answer is c or d.
91. Statistics

True or False and explain: If the slope of a regression line is large, the correlation between the variables will also be large. I was thinking false but am now second guesing myself. Thanks.
92. Math

The length of a rectangle is 5 cm greater than it width. The perimeter is 58 cm. What are the dimension of the rectangle? I know the formula for Triangle Perimeter is 2(L+W) and the L is +5 more than the W but I can't write the equation for it. This is
93. chem

Benzaldehyde, C6H5CHO}, has a normal boiling point of 179.0 C and a critical point at 422 C and 45.9 atm. Using a phase diagram, estimate its vapor pressure at 125 Degrees I'm directing it up again to Dr. Bob. (or anyone else who can help) **** If the
94. CRJ303-Statistics question

Re-worded from the "Study Questions" part of Chapter 5 from this site: "Student Study Site for Essentials of Social Statistics for a Diverse Society" Please show the steps for each question "When the Scholastic Aptitude Test (SAT) - now known as the
95. Math

Jack is thinking of a number. Here are four facts about his number: a. It is a multiple of 3 b. it had three digits and is a palindrome C. It is odd D. At least one digit is 2 What number(s) satisfy the four properties of jacks number?
96. question

What time of the year is barley bucked, horseshoes played, and there are migrant workers? (this was in the 1930s) I am looking for the TIME OF YEAR, like the season. I was thinking fall.