Critical Thinking/Math

143,199 results, page 70

Math

Of the first graders who were asked, 1/6 like math best, 2/3 liked reading best, and 12 liked science best. How many were asked their favorite subject?

Math

Of the first graders who were asked, 1/6 like math best, 2/3 liked reading best, and 12 liked science best. How many were asked their favorite subject?

statistics

suppose that 70% of all college students love math. in a random sample of 8 college students, let x be the number of students who love math.find p(x=6)

Physics

A sled weighing 60 N is pulled horizontally across snow so that the coefficient of kinetic friction between the sled and the snow is 0.100. A penguin weighing 70 N rides on the sled. If the coefficient of static friction between the penguin and the sled is 0.700, find the ...

SAT Math?

I'm working on a couple of SAT math programs for school, and I have trouble figuring some out. 1. Joe is 3 years younger than Kate. If n represents Nora's age now, what was Kevin's age 4 years ago, in terms of n? A. N + 7 B. N + 1 C. N - 1 D. N - 4 E. N - 7 2. If (x + y)^2 - (...

Math

Consider the weighted voting system [75: 31, 29, 23, 16, 8, 7]. Find each: a. The total number of players b. The total number of votes c. The weight of P3 d. The minimum percentage of the votes needed to pass a motion 9rounded to the next whole percent) This is for my general ...

Math

What is 5/8 + 4/7 -1 ? I can't understand this math problem.... Please help me.... ------------------ Problem: In a boys' school, 5/8 of the boys play football and 4/7 play rugby. If every boy plays at least one of the two games, find the fraction of the boys who play both I ...

Re: Physics/Math

A single force acts on a 5.0 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.0t - 4.0t 2 + 1.0t 3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to t = 2.0 s. For ...

Chemistry

Complete the following table for aqueous solutions of caffeine, C8H10O2N4. a) molality b) mass percent solvent c) Ppm solute All we're given is Mole fraction solvent= .900. How do I solve for the other parts with only this?? It XH2O = 0.9, then Xcaffeine=0.1. Suppose we have 0...

math

I'm not good at math! I need help with finding a decimal from a fraction. like 1/3, 13/15, 19/32 I can't figure out how to turn it into a decimal! Just divide the numerator by the denominator. Use long division or a pocket calculator. can u help mme because i get f,s all the ...

Math - is this correct?

1. Estimate a 15% tip on a taxi ride that costs $23.25. I will first round the cost to the nearest dollar. $23.25 ≈ $23.00 I will now use mental math to find 10% of the cost. $23.00 x 0.1= 2.3 5% is 1/2 of 10%, so it would be $1.15. Finally, I will add the values to get ...

Math

Lesson 8: Solving Inequalities Unit Test CE 2015 Algebra 1 Unit 4: Solving Inequalities i need answers im 9 lessons behind in math and my mom just had surgery and the house is a mess if anyone understands please help!!!! ): i just dont have time

Math

A 6.4 ton military fighter must land on a flight strip. If the plane lands at a speed of 368 mph, and the coefficient of kinetic friction is 0.72 between the wheels and the ground. If the runway must be at least 150% as long as the shortest possible landing distance of the ...

Statistics - can someone check me

Frank has a 65% chance of receiving an A grade in geology, a 60% chance of receiving an A grade in mathematics, and a 77% chance of receiving an A grade in geology or mathematics (or both). Find the probability that he receives A grades in both geology and mathematics. P(geo ...

Math

You and a friend both take a math examination. You score a 98 out of 100 points and your friend scores 96 out of 100 points. Who scored better? Explain

Math

Elliot finished studying at 4:45 p.m. He spent 30 minutes reading a social studies chapter. he spent 45 minutes on his math homework. At what time did Elliot begin studying?

calculus

v(t)= Ce^(k(square root(t)) Suppose that the dealer, who is 25 years old, decides to sell the card at time , sometime in the next 40 years: 0< or equal to t < or equal to 40. At that time , he’ll invest the money he gets for the sale of the card in a bank account that ...

Math pleaaaase help

A national math contest consisted of 11 multiple choice questions, each having 11 possible answers. Suppose that 111 students actually wrote the exam, and no two students has more than one answer in common. The highest possible average mark for the students can be expressed as...

math

I need ideas for a grade three math project. A collection of 1000 items that can be fixed to a sheet of bristol board. All and any ideas would be appreciated How about uncooked elbow macaroni? You could even use food coloring to dye them to represent hundreds. In other words...

math

What are the following symbols used in math sequences: a sub i, n, N? ai is the ith element of the sequence n is the value of i in the term you are refering to. For instance, 3,4,5,6 a3 is 5. That term corresponds to n=3 N is the number of terms in the sequence.

math

The math team in addville travled to subtractville for a math compertition. The bus averaged 40 mph from addville to subtractville but adveraged 60 mph during the return trip. What was the adverage speed of the bus for the entire trip? Thats the story problem i have to solve. ...

Quick math help

Can someone please check my math Hw? Thank you!! Solve each system by elimination. 1. 8x+7y=-1 -9x-7y=2 I got (-1,1) 2. 4x+3y=1 -4x-7y=-13 I got (2,-2) 3. -7x-6y=-21 -x-6y=-3 I got (3,0) 4. -2x+3y=-16 -2x-5y=-16 I got (8,0) 5. -7x+2y=13 -14x+4=26 I got (0,0) 6. 15x-8y=14 -5x+...

math,correction&help

Is this right:if it still needs more can someone help me out what else can i say....thanks why are polynomials important? polynomials are important because the are used to determine and solve the unknowns in equations. Many natural processes can be modeled in math equations, ...

Math

Checking my son's homework and want to see if he figured this out correctly .. i am too old to be revisiting this math ... Here is the question ... The perimeter of a rectangle patio is six times the length of the shorter side. If the shorter side is 8 feet, what is the length...

math

a math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the time before the ...

math

a math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the time before the ...

math

math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the time before the professor...

Math 7 - NYS Math Exam Review Help!

19. The circumference of the circle below is 25.12 centimeters ***** There is a circle and then there is a line and written radius C = 2(pi)r Which is the best estimate for the length of the radius of the circle? a) 3 cm b) 4 cm c) 8 cm d) 16 cm please help i tried to solve ...

Math

5. Joe Sullivan invests $9,000 at the end of each year for 20 years. The rate of interest Joe gets is 8% annually. Using the tables in the Business Math Handbook that accompanies the course textbook, determine the final value of Joe's investment at the end of the 20th year on ...

math

I was just wondering, if a series of numbers has 8 digits and the 1st digit is always 3, how many possible combinations of this number could there be. I am certain I once learned this in a math class years ago, but cannot remember how to calculate it. Help would be greatly ...

math

Mike completed 19 math problems before dinner for tonight’s homework, and he completed x problems after dinner. Write an expression to determine the total number of problems he completed.

Math

Samantha has homework in five subjects tonight. She has 15 minutes of science, 20 minutes of math, 30 minutes of reading, 20 minutes of writing, and 15 minutes of geography. If her mom walked in randomly while she was doing her homework, what subject would she most likely see ...

Math

At the beginning of the year last year a math department budget was 15% of the total budget. This year it was 10% of the total budget. What percet did the math department budget decrease from last year?

Psychology Question-DESPERATE FOR HELP!!!

People typically adjust to a group's social norms by: 1.paying attention to the negative consequences that result when someone violates one of those norms. 2.noticing the differences among group members' behaviors. 3.asking a group leader to explain why they think and behave ...

math

the mass of 3 dictionaries and 2 textbook is 8 kg and the mass of 3 dictionaries and 3 textbook is 9 kg. find the mass of 5 textbooks? math - Steve, Monday, September 19, 2016 at 5:17am 3d+2t = 8 3d+3t = 9 clearly, t=1 i cant understand it math - Steve, Monday, September 19, ...

Math repost for Justin

Math - justin, Wednesday, October 10, 2007 at 9:04pm what is the answer to the dot thing were you have three rows of there dots and you have to connect them all with four straight lines and no diagnals plez write back befor october 13 2007

Math

How can you order three whole numbers with different numbers of digits without comparing the digits? Give an example. I think that I can use the same number with different place numbers like: 4, 44, 444; I don't have to compare numbers. Is this right? If not please help me.( ...

math

HELP heres a math problem ; give me a formula for it please;;; a carpenter has several boards of equal length. he cuts 3/5 of each board.after cutting the boards , he notices that he has enough pieces left over to make up the same length as 4 of the origional boards. how many ...

Math/solving two-step equatios(distributive proper

Good morning! I am trying to help my nephew who because of seizures when he was younger has a hard time understanding math. I need step-by-step (written in words) on how to do two-step equations (distributive properties). 3(c+5)=12. 5(4d+8)=40. -(2k-11)=7. 3/4(4x+8)=-12 -4(3x-...

English

1. Do you quietly think so? 2. Do you really think so? 3. Do you easily think so? 4. Do you finally think so? 5. He solved the math problem very quietly. 6. He solved the math problem very really. 7. He solved the math problem very easily. 8. He solved the math problem very ...

math

Your aunt lends you 175 dollars to buy a guitar she will decrease the amount you owe bye 25 dollars for each day you help her bye doing odd jobs. Write a verbal model that you can use to find the decrease in the amount you owe your aunt depending on the number of days you help...

math

I need help with these two math problems. i have been trying those for two hours. Can't find the answer. use grouping symbols to make each equation true. 1/2*2^3/2*4/8*4/2=1/2 64-5*1+4/8+5=3 *= multiplication is there any qucik way or any trick to solve these problems quickly ...

10th grade English

This is my personal reflective essay. Please fix any mistakes or awkward phrases ASAP My body and my mind became lighter than air around me, as I threw myself on a couch where my back enjoyed being at. Released from the monstrous term of school, I felt saint-like, as if I ...

math

19. Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with Mr. Green. Use ...

Math Symbols

PLEASE ANSWER MY LAST POST (MATH SYMBOLS) PLEASE I REALLY NEED SYMBOLS

math

Alexandra correctly answered 90% of the questions on a math test. If she missed 4 questions, how many questions were on the test?

Math 6 grade unit 6 lesson 11 unit test

Pls need help with The unit 6 math test

Just for "Ms.Sue"

Hey, "Ms.Sue". Ms.Sue you have been very helpful. But I keep getting stuck. 5th grade math is a challenge especially after my teachers stroked and we were out of school for almost all of September and no one in my house understands this new math either. I NEED HELP!!!!!!!!! ...

MATH please help with this ?

math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the time before the professor...

Math

Eli's Dad made him a birthday cake, but forgot to buy candles. He could only find a few. But Eli was smart in math, so his Dad said "The ratio of candles to years is 3 to 5" That gave him the right number. How old was Eli? I am very confused on how to even begin finding the ...

Math please help

There was a surge in math club membership after the fun Halloween party. When the principal asked Mrs. Germain how many students were currently in the club, she replied, "Three times our number plus a third of our number plus a fourth of our number plus you and me is two ...

Math

math forms for construction are made of cement like the one shown. this one has a hollow cylindrical center. what is the total volume of the form? use 3.14 as an approximation for pi. round answer to nearest tenth. Diameter for cylinder is 0.5 ft Width for cube is 1 ft Length ...

math

i really need to know what.... 4 to the power of 77 is... 477 = 2.28360 x 1046 according to my calculator. i don't know how to do factors with two digit numbers. Please click Post a New Question, put Math in the subject line, and post your question. It would help if you gave ...

math

help my daughter has a math problem and came to me for help, I am lost.... what is the gcf for the following trinomial? x^3-18x^2+28x I am assumming you are trying to factorise we can simply take out an x to give: x(x^2-18x+28) the quadratic will not factorise simply but if ...

math

on a tv game show, the contestant is asked to select a door and then is rewrded with the prize behind the door selected. if the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a 40 thousand dollar ...

math

every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time. can you find the correct order to arrive at the finals totals shown. only using 4 8 3 5 and * + - to make 31 15 20 21 9 17 11 27 ...but you only can ...

math

every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time. can you find the correct order to arrive at the finals totals shown. only using 4 8 3 5 and * + - to make 31 15 20 21 9 17 11 27 ...but you only can ...

math

every row and column contains the same numbers and the same math signs, but they are arranged in a different order each time. can you find the correct order to arrive at the finals totals shown. only using 4 8 3 5 and * + - to make 31 15 20 21 9 17 11 27 ...but you only can ...

bridge

Mr. Feng conducted five math tests. Trinity had completed four tests and scored 79, 78, 82, and 75. She wanted to achieve an average of 80% in her math tests. Write an inequality to find the minimum score Trinity can make on the fifth test in order to score an 80% for all the ...

Math Repost for Mecca

Math - mecca, Wednesday, October 24, 2007 at 9:20pm Lauren has collected 150 nickels and dimes. She has 70 more nickels than dimes. How many nickels and how many dimes

Math

Posted by Lance on Friday, April 27, 2007 at 9:47pm in response to math. please give us one set of numbers so we can work an example for you. What was the percentage increase in motor vehicle production in countries outside the United States from 1950 – 1997? 1950- 10,577 ...

Math

I need to figure out how to make graphs on a computer for a math project. Any help? I need to make histograms, back to back boxplots, and back to back stemplots.

math

alan scored a total of 14 points for answering all 15 questions on a math quiz for every correctly answered question alan got 2 points for every wrong ahe lost 2 points how many questions did he answer correclty

math

alan scored a total of 14 points for answering all 15 questions on a math quiz for every correctly answered question alan got 2 points for every wrong ahe lost 2 points how many questions did he answer correclty

Math

Lenlen cut a rectangular block of cheese into cubes with an edge of 3cm each. The base area of the block is 36 cm squared. If the block is 6 cm high, how many cubes of cheese did Lenlen get in all? That is my math hw It needs an equation solution and answer

Math lit,life sciences,bussiness study,geography

Im in grade 10 and im doing math literacy,life sciences,business study,geography,life orientation,english and isizulu,what career path do i need to follow?im literaly lost.

World History (Ms. Sue)

Doyou agree with that which I have written for the topic that I was given? Describe the emergence of Romanticism in art and literature, social critisim, and the move away from Classicism in Europe. In the late seventeenth century, an intellectual movement known as the ...

Stats

Suppose the correlation between SAT Verbal scores and Math scores is 0.57 and that these scores are normally distributed. If a student's Verbal score places her at the 90th percentile, at what percentile would you predict her Math score to be?

Math (Very Easy Math)

I'm kind of confused as to what simplified mean? Can you please provide me with a definiton... Like I'm kind of stumped as to what one is more simplified -7(2x + 3) or -14x -21 Please explain what it mean for an expression to be "simplified"

Math

A recipe for a special sauce calls for 4/5 of a cup of ginger and 1 1/4 cups of pineapple juice. How many cups of ginger would you need if 3 cups of pineapple juice are poured into the mixture? Math PLEASE HELP IT'S URGENT!!!!!

Math (money)

HIII!!! I NEED HELP ON MATH! PLEASE HELP! Melissa has spent $17 so far on gifts. The additional amount she will spend will be more than $8. What are the possible total amount she will spent? Use c for the total amount (in dollars) she will spend.

PLEASE HELP CHECK? MS. SUE ANYONE?

How is this so far? and what else should i add, i need two pages and i have only one done, due today. help? I'm doing like a journalist. I Josephine A. Walker was a slave for Harry Richardson. Every morning I had to serve him, I had to be up by 4am and was unable to go to bed ...

English

can you help point out any stylistic devices in this poem? He seemed to know the harbour, So leisurely he swam; His fin, Like a piece of sheet-iron, Three-cornered, And with knife-edge, Stirred not a bubble As it moved With its base-line on the water. His body was tubular And ...

math grade 10 math

A map shows a main gas pipeline running straight from A(45,60) to B(65,40) a) Is the point C(63,54) on the branch pipeline? Explain your reasoning b) What is the shortest route for connecting point C to the main pipeline.Explain **OMGGGG PLZZZ HELPPP, THANK YOUUUUUU!!!!!!!!!!!

math

For more than 4000 years the Great Pyramid of Giza stood as the tallest structure in the world. After it was completed, the pyramid stood an amazing 481 feet high. Y 9 th. grade math Semester Project: The Great Pyramid of Giza

Algebra

I am a parent trying help my son, who has trouble understanding and remembering how to work his math. I never had this math, so it is hard for me to explain it. If I see it worked out. Then I can explain it, (I, Think) here is the problems. A ball is tossed into the air and it...

MATH CHECK ANSWERS

CHECK THESE MATH ANSWERS PLEASE 1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.12:30(I PICK THIS) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.30:45 D.24...

MATH CHECK ANSWERS

CHECK THESE MATH ANSWERS PLEASE 1. There are 18 boys and 12 girls in a math class.what is the ratio of girls to total students? A.18:30 B.12:30(I PICK THIS) C.30:12 D.30:18 2.which of the following ratios are equivalent to 6:9? Choose all that apply. A.3:2 B.18/27 C.30:45 D.24...

math

Robert's acct p $98.50 has been delinquent for three months. Office procedures charge a 2% service charge after 90 days componded monthly and is added to future bills. What will be the amount owed after nine months? I did $98.50 x 2% = $1.97 $1.97 x 6months = $11.82 $98.50+ $...

Math

Hello I was wondering if you can help me with some math. I cant figure this problem and when my friend helped me they came up with a different answer. The question is find the surface area of the cylinder. The radius is 8 and the height is 8. Use 3.14 for pi and round to the ...

Math (5th grade)

There are 8 more girls than boys in the Math Club. The club has 44 memebers. How many boys and how many girls are in the club? Show your work.

math

on her first two math tests, Gracie has an average score of 86. If she got a score of 92 on the first test, what is her score on the second test?

Fifth Grade Math

How do you explain how to do this math problem to a child? 7/10 of the U.S. population (175,104,000)in 1991 believed saying A to be true. What is the total population? We are trying to find what the whole population total is. They have given us 7/10 or 1755,104,00. How do we ...

Math- Reiny can you help me with this question

I know how to do the work, but the way the question is worded I am not sure the answer. The math works comes out to -2 which is b but if you want the number less than -2 the answer is c. Which are they asking for . This is my work. Which is the value is in the solution set for...

3rd grade math

Carl shades a row on a multiplication table. The products in the row are all even. The ones digits in the products repeat 0,4,8,2,6. What row does Carl shade? Now I am awful at math and don't even begin to understand this question!! Please help

math-calculus

30/x^2-25 = 3/x-5-2/x+5 i be left with 30 = 3x^2-75-2x^2+50 i not sure what to do? i use the quadratic formula? math-calculus - Steve, Saturday, January 7, 2012 at 3:38pm First, you have to simplify properly: 30/(x^2-25) = 3/(x-5) - 2/(x+5) 30 = 3(x+5) - 2(x-5) You were ok ...

math

If a single letter is drawn from the set( matheics) what is the probability that the letter drawn is a member of the set (math)

English Grammar

Which sentence uses proper grammar? I'm bored by math class. Or I'm bored of math class.

math

The mean score on a Math exam was 50% and the standard deviation was 10%. Assume the results were normally distributed. (a) What percent of students earned a score between 50% and 70%? (b) If 60 students took the exam, how many got a score between 50% and 70%?

math

An art student wants to make a model of the classroom. The length of the classroom is 2.4 times its width. The length of the students model is 42 in. What should the width of the model be? a. 17.5 in b. 20.5 in c. 83.6 in d. 100.8 in Use mental math to determine the solution x...

English

I posted this yesterday, that I need to modernize an Ancient Greek myth. bobpursely replied with an idea that I could do the Siren sisters as cheerleaders, but I couldn't find a myth about them, they're in two different myths. Like I've been thinking of myths such as Hercules'...

outline

I need help on constructing a persuasive speech outline. Do you know a good website that will show me how to do this? Thanks. Persuasion and argument are almost the same thing. The principles for writing an argument (essay or speech) are the same. http://www.powa.org/argument/...

math

in a grade 7 class, 36 students are either members of the math club or science club or both. 10 students are members of both clubs. if 31 students are members of the math club how many are members of the science club?

Please Help Me With My Math Homework

I wrote my math homework questions. It's in Jiskha Homework Help Forum In: Name:Tanisha Subject:Math Thank You! I already replied, you don't need to make a new question asking someone to answer...... Thanks for the answer! It was a good help! the product of 7_ ,4_ , and 1_ IS...

math

I was wondering if someone could help guide me with this problem.. math is my worst subject... I would appreciate it definately, thank you.. 3 1/5 divided by 7/8 x 2/3= I think I am making it too hard on myself... my first step would be to change the mixed into an improper ...

math

Urban Community College is planning to offer courses in Finite Math, Applied Calculus, and Computer Methods. Each section of Finite Math has 40 students and earns the college $40,000 in revenue. Each section of Applied Calculus has 40 students and earns the college $60,000, ...

math

Solve following system of equations? x+3z=-2 2x+2y+z=4 3x+y-2z=5 i need help with few so i can get hang of this math plz. Perform row operations write new matrix [132 -312 2-11| 073] R1+R2 using x,yand z variables write system linear equations represented by matrix [702 0174-...

Last Math problem I promise

a cellular phone company offers a contract for which the cost C, in dollars of t minutes of telephoning is given c=0.25(t-300)+65.95 where it is assumed that t >== 300 minutes what times will keep costs between 106.20 and 139.20? I am already lost at word problems... please...

math

On a T.v. game show a contestant is asked to select a door and then is rewarded with the prize behind the door selected. If the doors can be selected with equal probability what is the expected value of the selection if the three doors behind them have $40000 foreign car, a $3...

MATH PLEASE HELP

Anna mixes the letters S, E, L, E, C, T, E and D thoroughly, without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will not be the letter mary selects A 3/8 0.375 37.5% B 8/5 1.6 16% C 5/8 0.625 62.5% D 8/3 2....

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