# Critical Thinking/Math

145,717 results, page 68

1. ### math

lilly made a 75 on her history test and an3 on her math test. the mean grade on the history test was 72 with a standard deviation of 5. the average grade on the math test was 81 with a standard deviation of 4. which test did lilly do better?
2. ### Math

What is a good math website which'll help kids aged 5-6 learn? I want a website that shows you how to solve problems step by step. Problems such as addition and, subtraction. Thank you in advance.
3. ### math math

Given the linear equation , find the y-coordinates of the points (-6, ), (-3, ), and (3, ). Please show all of your work. Plot those points and graph the linear equation.
4. ### math math

Given the linear equation y=2/3x+1, find the y-coordinates of the points (-6, ), (-3, ), and (3, ). Please show all of your work. Plot those points and graph the linear equation
5. ### Math kindergarten

The question in the math kindergarten homework is : Have children count the birds in the picture and then draw the correct number of counters to show how many. How do you draw counters? Thanks.
6. ### 6 grade math

Can you help me with my new math homework? Regroup each mixed number by regrouping a 1 from the whole number. 1 1/4. 8 5/12. 4 5/9. 2 1/3 Can you please explain each one of this problem for me please step by step.thank you!
7. ### Math

The math question is "in a piggy bank there is a total of \$15.75. If the ratio of dimes to quarters is 5:7, find the total amount in quarters. My question is, what formula would I use to solve this?
8. ### Math - Help! ASAP

8. a) Estimate 51% of 162. First, we can multiply. So, 162 x 51% = 82.62. We round it, which will be 83. b) Use mental math to calculate 51% of 162. If we round 51%, it is close to 50%. So, in that case, 50% of 162 is 81. Did I do this right? Please help me! Thanks!
9. ### Math

Determine whether the equation defines y as a linear function of x. If so, write it in the form y = mx + b. Can someone please break this down to someone who's terrible in math. 6x-9y^2+8=0 a. y=6x+8 b. y=6/9x-8 c. y=6x-8 d. y=6/9x+8 e. y is not a linear function on x.
10. ### Math

Hello. I'm not a native English speaker. I have a math assignment and I need to explain the process of this equation. y=14.2x+19.3 542 = 14.2x+19.3 542-19.3 = 14.2x 522.7 = 14.2x x = 36.8… I don't know how to explain this in English, can anyone please help me? ;(
11. ### English (Summer Reading Essay)

Hi! As a note to reader before you start reading: Here's what I've been given to work with... "In a five-paragraph essay, discuss which author was more successful in creating a good piece of literature. Use examples from both books to explain your thinking." And the rubric... ...

Out of 42 kids in a class twice as many failed Ela as math,4 failed both. If 7 failed neither, find how many failed each subject. Please help and show work it would be great thanks i really need help thanks
13. ### 3rd math

okay Math genius! Help me out here. I am a number greater than 99 and less than 1,000. Two of my digits that aren't next to each other are the same. My tens digit could not be greater and it is 1 more than my hundreds digit. What number am I?
14. ### Math

Jeremy got scores of 93,82,91, and 88 on his first four math test. What score must he get on the fifth test to have an average test grade of 90 for the five test ? Can someone explain step by step. Please
15. ### math

I have a math question.two fielda ats state park are 1000 meters from each other.on a map,the two fields are 8 centimeters apart.What scale is the map using?is it the metric scale??
16. ### math

I can't figure this one. At a math contest,12 problems were given. Five points were awarded for each correct answer,and two points were deducted for each incorrect answer. Matt's score was 39.How many correct answers did he have.5-2(12-5)=39,5-24+2=39,7=63,9
17. ### math

Downtown Mathville is laid out as a square grid of 9 North-South streets and 9 East-West streets (See diagram). Your apartment is located at the Southwest corner of downtown Mathville. (See point T.) Your math classroom is located in a building that is 6 blocks East and five ...
18. ### Fluid Mechanics HELPPPPP!!!!!

Hi, I have a deadLine untill Thursday to find out the solutions to the following Questions. Can Anyone Help me??? please?? 1) A cylinder with Relative Density=0.5 and height=10m is holding vertical with the bottom base touching the surface of water. If we leave the cylinder to...
19. ### Chemistry

I have a series of questions: What describes the arrangement of elements which repeat similar properties? Isn't the answer periodic table. next question who is the father of modern day periodic based on x-ray diffraction? Isn't the answer Dmitri Mendleev next question when the...
20. ### Math

Could someone simplify this? (3a)(3a)^3 The "^" is an exponent, so it means "cubed" or "to the third power" in this case. its means to the third power I know that. -_- I need to simplify that monomial. (3a)(3a)^3 (3a)(3a)^3 = (3a)^4 = (3^4)*(a)^4 = 81a^4 could you help me get ...
21. ### English

can someone help me turn this into a personal narrative? The Lost Dog I didn’t feel like helping my sister wash my dad’s car. After our dog left this morning we were both sad, we didn’t feel like doing anything but to just search for him. “It was your fault, all your ...
22. ### Damon/BobPursley/Physicstutor/whichoneisright

Q11.The table below shows how the braking distance x for a car depends on its initial speed u. | u / ms-1 | 5 | 10 | 20 | 40 | | X / M | 2 | 8 | 32 | 128 | The relationship between x and u is: doubling speed increases distance by a factor of 4. i)The reaction time of a driver ...
23. ### Math Probability

A math class has 20 students who choose a topic from a list for an essay. How big pool is necessary for the probability of at least one duplicate to drop below fifty percent? I understand it is like the birthday problem, I just do not understand how to solve it still.
24. ### Math Models

The scores on a standardized test are normally distributed with the mean of 750 and standard deviation 70. Find the probability that a score is more than 890. This is from my Math Models class. I am not taking Statistics. Please someone show me how to do answer this-I don't ...
25. ### 4 grade math

i have a question on a math problem, please#1 explain why 7*8 is not a number sentence. Next question is write two true number sentence. thank you!
26. ### Math

A math teacher drove by a playground that was full of boys and dogs.The teacher notice there were a total of 40 heads and 100 feet. Hom many boys and how many dogs were there?
27. ### math

my math homework tells me to find the area of a circle using it's circumference. the circumference given was 6π yd. (6 pi yard). can someone explain to me how to find the area?
28. ### math

There are 28 students in Ms. Rainbow's Math class. The number of girls is 10 less than the number of boys. If there are b boys in the class, write an equation to correctly model the situation.
29. ### Math

I need help solving the problem below. Chris answered 19 out of 25 questions correctly on a math test. What percent of the questions did she answer correctly? Is the answer 76% 19/25= 0.76
30. ### math

In a math contest of 20 problems, 5 points were given for each correct answer. If Janelle answered all 20 problems and scored 72 points how many correct answers did he have?
31. ### Math

I need help here I suck at math, I need help with lesson 8 solving equations with fractions unit 6 adding and subtracting fractions unit test for connexus

H2(g) + CO2(g)<-> H20(g) + CO(g) When H2(g) is mixed with CO2(g) at 2,000K, equilibrium is achieved according to the equation above. In one experiment, the following equilibrium concentrations were measured: [H2]=0.20 M [CO2]=0.30 M [H2O]=[CO]=0.55M a) What is the mole ...
33. ### math

for math homework it is algebra and we have to use a ti-83 plus calculator to convert things, that's the one our teacher told us. but i do not have one. so i was wondering if anybody knew of a website that i could use a free calcutar online?
34. ### math exam tommrow review

the mean score on a math test taken by 15 students was 82%. one more student takes the test late and earns 93%. what is the new mean score? please show work
35. ### Math

This is a continuation of a math problem I posted earlier. I'm a little confused by this question. From your equation, when during the day would the temperature be 30C? (2 marks) The equation I obtained was: T(t) = 5.9 sin( πt/12 + 7π/6 ) + 27 Any help would be ...
36. ### Math And Science for Young Children

Concepts can be characterized as: A. the building blocks of knowledge. B. thoughts that are incomplete until adulthood. C. ideas that young children do not yet have. D. basic to math but not to science. Is D the correct answer
37. ### Math math

the arch of a concrete bridge is a semi ellipse having a span of 60 ft and a central height of 20 ft. if the roadway is 25 ft above the base. find at 10 ft intervals the distance from the arch to the roadway. ( im completely lost which to solve/find)
38. ### statistics

SAT Exam Scores – A school administrator wonders if students whose first language is not English score differently on the math portion of the SAT exam than students whose first language is English. The mean SAT math score of students whose first language is English is 516, ...
39. ### biology

On a television talk show, a guest claims that people who exercise vigorously for 15 minutes or more every day are able to solve math problems more rapidly than people who have no vigorous exercise in their daily routine. Describe a controlled experiment that could be ...
40. ### math

Unless we have the specifics of the problem, we are unable to provide help. Please repost with more details. I hope this helps a little. Thanks for asking. where else can I get help to figure out a math cross puzzle. I can get some the equations to equal on one side but not on...
41. ### Math

I'm stumped on this problem. My math teacher stated to write multiplication tables from 1 to 6 and then solve. I'm not even sure where to start after I finished writing the tables. At the same time, Marisol rolls 2 number cubes that each have sides labeled 1 to 6. What is the ...
42. ### Math

Matt Miller, age 28, takes out \$50,000 of straight-life insurance. His annual premium is \$418.20. Using the tables in the Business Math Handbook that accompanies the course textbook, determine the cash value of his policy at the end of 20 years. A. \$13,250 B. \$26,500 C. \$30,...
43. ### english

1. Which of the following sentences is correctly punctuated? A. The local police asked the F.B.I. to assist with the case. (B). Mr. Jones visited the YMCA before becoming a member. C. Mary remembered to buy milk didn't she? D. The company held it's annual party at the ...
44. ### Math

Hi everyone, I would like some help with Math.. And I would like help but if you have time.... My question is: (8x101)+3x101+(7x101010)= I don't really know the answer to this, but while i have this posted I will try to find a way to figure it out. Thanks!!!!
45. ### math

please check my answers 1.which is smallest 5/8,3/4,9/16,7/8 =9/16 2.subtract 6 3/10-4 11/15=1 17/30 3.estimate 6 1/8* 7 4/5=48 4.lcm of 20,32=160 jon spent 1/3 of his study time doing math and 2/7 preparing for history exam. what fraction of his study time remains? = 8/21 5....
46. ### math

you have 3 hours to do your homework. you spend 45 min on math. you want to divide the time remaining equally along 4 subjects. write and solve the inequality to find the # of minutes you can spend on each subject. I know the answer is 33.75 but can you tell me how to write ...
47. ### MATH plz help

In a math question, Magda correctly answered a question that asked for a typical measure of orange juice in a full family-size jug. Which was her answer? A. 2 cups B. 1 gallon C. 10 gallon D. 10 fl oz I think its A or D plz check
48. ### Math

There a re 30 students in a math class. Twelve belong to the computer club, and eight belong to the photography club. Three belong to both clubs. How many belong to neither?
49. ### math

9. In Mr.chin's math class there were g girls and b boys. The number pf girls was 5 less than twice the number of boys. What is the value of g in terms of b? this is what I have so far: 2n-5
50. ### Math (7th grade math)

A real estate agent earns a weekly salary of \$200. This week, the agent sold a home for \$120,000 and was paid a 5.5% commission. Find the agent’s earnings for the week. A) \$661.10 B) \$6,611 C) \$6,800 D) \$860
51. ### Math

I have a table and need the math rule but can't figure it out. If the table is: X and Y 2 3 4 4 6 5 8 6 What is the rule??
52. ### Math

There are 30 sultry dents in the class. 20% of the students received an A on the last math test. How many students received an A?
53. ### math

jennifer must complete any 10 of the 25 math problems on a test what percent must she complete
54. ### Science Check Please Dr.Bob222

I am sorry would..Hopefully this would make it easier 1. Your ____ is your first line of defense against pathogens. brain heart large intestine skin * 2. Blood vessels help regulate your body's temperature. When it's cold, your blood vessels ____ to decrease blood flow and ...
55. ### 5th math

what is the least common multiple (LCM)for 15 and 45? There are 16 girls in a class of 36 student. which expression could be used to determine the number of boys (b) in the class? please! help i think this too hard for 5th grade math. this suppose to be for 10th or college ...
56. ### Math

My 7th grade daughter has the following math problem and gets zero help from her "language arts" teacher who gave out this problem: WANT X BE ________ CAREER Each letter in this question stands for a 1-digit #. No 2 letters may stand for the same #. Find the value for each ...
57. ### math

Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24 students,the teacher picks...
58. ### math

Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24 students,the teacher picks...
59. ### Math

Which survey question is biased? Which is your favorite, pizza or spaghetti? Which subject is your favorite, math, which is easy, or English, which is difficult? ••• Who do you live with: both parents, mother only, father only, or another guardian? Should children be ...

Two more students like math than science Half the number of students who like science like history. The number of student who like reading equals the number who like math and science combined. Two students like History. How many children (12) like each subject
61. ### 6th grade math

on a farm there is 18 pigs and chickens (all together). There are 52 legs, how many pigs and how many chickens are there? Show how you got your answer. i know there are 10 chickens and 8 pigs, but i did that through trial and error, can you help me figure out the right math to...
62. ### math

I need someone to help explain how this math problem works. I am not sure how to convert this fraction below to arrive at 100.8 degress. 7/25 .360 degrees=100.8 degrees How did this answer of 100.8 degrees come about in this equation?
63. ### math

Good 1 Steve so I sux at math but your here :) Heres another: X = [students playing football], Y = [students playing baseball], and Z = [students playing rugby]. Draw a Venn diagram of Z – (X U Y), and write a sentence describing what the set represents:
64. ### Elementary Statistics

SAT math test scores for all students taking the test are approximately normally distributed with mean score of 514 and std. deviation of 118. What is the probability that a randomly chosen student will earn a score above 600 on their SAT math test? There's 19 students, ...
65. ### IS ANYONE IN THIS WEBSITE? I NEED HELP MATH H.W.

NIMI HAS 59 CANDIES.SHE GIVES HER FRIENDS SOME CANDIES. SHE GAVE 10 CANDIES TO HER FRIEND SARA AND 15 CANDIES TO HER FRIEND ANITA.HOW MUCH DOES SHE HAVE LEFT? COMMENTS: I AM IN SECOND GRADE. PLEASE HELP ME WITH MY MATH HOMEWORK. THANK YOU! 59 -10 -15 = (you answer)
66. ### math - discrete math

A vending machine dispensing books of stamps accepts only one-dollar coins, \$1 bills, and \$5 bills. How many ways are there to deposit \$10 for a book of stamps? Note: I have the answer but do not know how to solve for it. Answer: 1,217
67. ### Math

This math problem is somewhat tricky. It says to write a pair of decimal division expressions, so that when you estimate and compare the quotients, you get 9>3. The below is what I thought of: 18.2/2 and 30.3 divided by 10 18.2 is rounded to 18 so then 18/2=9 30.3 is ...
68. ### Math

This math problem is somewhat tricky. It says to write a pair of decimal division expressions, so that when you estimate and compare the quotients, you get 9>3. The below is what I thought of: 18.2/2 and 30.3 divided by 10 18.2 is rounded to 18 so then 18/2=9 30.3 is ...
69. ### Math

An industrial dishwasher takes 4.8 litres of water to wash a full load of dishes. If you were to wash full loads, how much water would you use? I am very confused on how to begin figuring this math problem out. Can you assist?
70. ### math check question

Subtract and Simplify: 4a^2/(a-b)-(4b^2-8ab)/(b-a) I have the answer as 4(a+b)^2/(a-b) or should it be 4(a-b)^2/(a-b) Responses Math problem check - bobpursley, Sunday, October 12, 2008 at 4:23pm just the numerator.. 4a^2-8ab + 4b^2, right? 4(a-b)^2 Now does that reduce with ...
71. ### math

Short math quadractic equation word problem*best answer? josh buys concert tickets worth \$180, he then keeps 2 of the tickets and sells the rest for 9 dollars more, he make a total profit of \$36, after selling all the tickets. what was the original ticket price?
72. ### LA Help

"The Rider" A boy told me if he rollerskated fast enough his loneliness couldn't catch up to him. the best reason I ever heard for trying to be a champion. What I wonder tonight pedaling hard down King William Street is if it translates to bicycles. A victory! To leave your ...
73. ### English

1. My math exam is tomorrow. 2. Tomorrow is my math exam. 3. Tomorrow I have a math exam. 4. I take a math exam tomorrow. (Are all the same and grammatical?) 5. What did you do over the summer vacation? 6. What did you do during the summer vacation? 7. What did you do on the ...
74. ### math

4 numbers are placed in a bag. two are removed and total 2.4. The numbers are returned to the bag and the process is repeated 4 more times. The totals are 2.4 2.5 2.6 2.7 and 2.8. What are the 4 numbers in the bag? please let me know how you arrived at the answer. I was good ...
75. ### Internatinal Relations

Five of the most serious international problems facing the world today are: 1) the proliferation of WMD 2) international terrorism 3) economic development in impoverished countries 4) international financial stability 5) climate change In which of these five areas do you ...
76. ### math

In a class of 40 students, 27 like math and 25 like Filipino. At most how many students do not like at least one of these subjects?
77. ### Algebra

In a class of 60 students, 4/5 are members of Math Club. Among the members, 3/5 are girls. How many boys are members of Math Club?
78. ### dumb math

9+9=w w= 18...right? ............18......dumb...math 9+9=18, you dumbos.
79. ### math pls help Ms Sue

could you pls check my math 6< s +7 -1<s -8.7<y + (-12.4) 21.1<y x + 17 > 10 -7 > x 11 > j + (-19) 30>j 24.3 > g- (-14.4) 38.7> g f + (-20) > -7 f > 30
80. ### math

I don't understand how to do my math homework. 7 over 6. (-18 over 35)
81. ### math

can someone explain y we have 2 have math???
82. ### Math

c-d / d-c I know the answer is -1, but what is the math that I have to show to get to that answer? Thanks!
83. ### Programming

Understanding object-oriented methodologies is often difficult. You already understand that object-oriented analysis and design emulates the way human beings tend to think and conceptualize problems. As an example, consider a typical house in which there are several bedrooms, ...
84. ### Dr.Bob (thx) Check my work for this one pls

What is the molar solubility of Sr3(AsO4)2 and the concentration of Sr^2+ and AsO4^-3 in a saturated solution at 25 deg Celsius? The Ksp is 1.3E-18. Show the balanced reaction. Below, I write M.S. (molecular solubility) 1)Sr3(AsO4)2<---> 3Sr^2+ + 2AsO4^-3 M.S. xmol/L 3x ...
85. ### ENGLISH

I need help finding real life examples for the scarlet letter themes? Do the ones I have fit the themes? Are they correct? 1. Guilt can destroy a person, body, and soul. I was thinking soldiers who fight overseas in countries and having to kill innocent people. 2.True ...
86. ### math

math ? FIND THE VALUE OF 5 - 35,791 a. five hundred b. five thousand c. five thousandths d. not given I selected - b. five thousand correct? or not?
87. ### math

If the word,"if," in math mean multiply and,"is," means equal, what does the word,"was'" mean??? EX: Four times a number was 22 greater than twice the number.
88. ### math

my math homework tells me to find the area of a circle using it's circumference. the circumference given was. can someone explain to me how to find the area?
89. ### math literacy life science, history,tourism

Can I do medical orthotic and prosthetic while doing math literacy and life science. CAn I QUALlifY?
90. ### 2 NDT grade math

Ok math smarties: Billy has 2 more green marbles than blue marbles. In all, he has 15 marbles. How many blue marbles does he have?
91. ### Finite Math Help Please!!!

Finite Math Help Please!!! Can someone help me ? I am confused about this Problem? Median Quartile 1 (Q1) Quartile 3 (Q3) for boxplot 9 10 11 12 13 14 15 16 17 18 19 20 Data
92. ### Math

Please explain how to figure out the following 7th grade math problem: If a rubber ball bounces exactly 1/2 the height from which it is dropped; and it is dropped from the top of a building that is 64 meters tall, how high will the ball bounce on its eighth bounce?
93. ### math

Posted by mota on Saturday, March 1, 2008 at 3:34am. THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------------- math - drwls 1000. ----------------------------- explain please i want to ...
94. ### Math

Hello! I am here because I have a question. In math we are starting a new unit: Probability. One of the questions on my homework are "A number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a complement of 4." I have no idea what a complement is. ...
95. ### Stupid Math School Math

Two cars are 750 miles apart and start moving towards each other. One car moves with the average speed of 40 mph and the other is 10 mph faster. When will the cars meet if they started to move at 11:00 a.m.?
96. ### Math

There is a graph and on the right hand side it has numbers going up from 0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70 these numbers represent Time (days) on the bottom it has 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 which represents Time (weeks) The math question is what is a real life ...
97. ### Math

Can someone check my answers for a couple questions in my test I can't get help because my dad isnt here and my mom can't do math. 3.Write the ratio as a percent In the seventh Grade class, 19/25 students voted in favor of having a class picnic. A.76% -- B.66% C.81% D.44% 4....
98. ### math!

hi im lauren and i have a big math test tomorrow(7th grade) and i need 2 know wht interval means. And i need the expalnation 2 be so simple that a little kid can understand it. lol. Can someone answer like in the next 10 mins plz! thx!! hurry peeps!!lol
99. ### Math: Geometry

I am having trouble with a problem from my online math class. I tried using the basic angle properties of circles, but didn't get anywhere: Let ABCD be a cyclic quadrilateral. Let P be the intersection of AD and BC, and let Q be the intersection of AB and CD. Prove that the ...
100. ### Math

Good evening everyone. I have the below math problem. I am a bit confused on exactly what they are asking? Members of a polling organization survey 700 of the 7,453 registered voters in a town by randomly choosing names from a list of all registered voters. Is their sample ...