Critical Thinking/Math
145,758 results, page 77

Re: Physics/Math
A can of sardines is made to move along an x axis from x1 = 0.2 m to x2 = 1.2 m by a force given by F = iF0exp(0.4x), with x in meters and F0 = 4.5 N. (Here exp is the exponential function.) How much work is done on the can by the force? For Further Reading * Physics/Math  ... 
Math (Algebra II)
I'm trying to finish up my summer math packet, and I'm almost done, but I'm having trouble figuring out this one: "Divide and simplify these expressions." (3x^4  2x^3 + 16x  192) / (x^2  8) so, that's 3x to the 4th, minus 2x cubed, plus 16x, minus 192 > all divided by... 
Math
Can you please help me with a math problem Suppose the ball was 3.24 feet above ground when it was hit, and that it reached a maximum height of approximately 102.51 feet when it had traveled a ground distance of approximately 214.26 feet. The ball lands after traveling a ... 
5th grade  MATH
Can someone help me figure out the way to solve this math word problem? Gerri bought a small bag of peanuts and ate 1/2 of the peanuts on Monday. On Tuesday, she ate 1/2 of the peanuts that were left. On Wednesday, she ate 1/2 of the peanuts that were left from Tuesday. She ... 
AIS
2. DATA FLOW DIAGRAMS Sawicki Music Supply is a mailorder business that accepts merchandise orders by telephone and mail. All payments must be prepaid with a major credit card. Once an order is received, either the item is found in inventory and shipped immediately, the item ... 
Math
math puzzle: i am less than 3000. all four digits are odd. all four digits are different. the sum of my tens digit and ones digit is 16. i am divisible b 13. who am i? Ans: the thousand digit must be 1, the hundreds digit is 3 or 5. The tens and ones digits are 9,7 or 7, 9. So... 
math
Eddie buys 100 sheets of heavyweight paper to make a notebook. He places 1/4 of the sheets in a section for English and 1/3 of the reamining sheets in a section for math. Which section is thicker if the 100 sheets of heavyweight paper is 2/5 in per 100 sheets? 
math
Sally answered 90% of the math test questions and 80% of the history test questions correctly. If each test had 50 questions, how many questions in all did she answer correctly? I think that she answered 85 questions in all that were correct. Am I right? 
Math
This math question i do not get it is Sanjay earns $13.00 each week from his papaer route.He earns $.15 for each daily paper and $.35 for each sunday papaer he delivers. He delivers twice as many daily papers as sunday papers. How many of each type does he deliver each week. ... 
Math
This math question i do not get it is Sanjay earns $13.00 each week from his papaer route.He earns $.15 for each daily paper and $.35 for each sunday papaer he delivers. He delivers twice as many daily papers as sunday papers. How many of each type does he deliver each week. ... 
MATH
IF JACK AND JILL ARE COMPARING RESULTS OF A MATH TEST AND jACK HAD 40 CORRECT ANSWERS AND JILL HAD 50 CORRECT ANS AND THERE WERE 32 QUESTIONS THEY BOTH GOT RIGHT AND 6 THEY BOTH GOT WRONG. HOW DO I FIND THE NUMBER OF QUESTIONS ON THE TEST? 
Math
I'm confused about a question on a math test. The question is: Which statement is a true statement? The answer choices are: A. All rectangles are squares B. All squares are rectangles C. Every rhombus is a rectangle D. Every rectangle is a rhombus. I really need help. Thanks! 
Math
Hello, I need help with a 5th grade math question. The red train returns to central station every 45 min. The blue train returns to central station every 60 min. If both trains leave the station together, in how many min. will they both be back at the station at the same time? 
math plzzzzzzz help
this is grade 10 math questions a rectangular window is 5 feet 3 inches in length, and 3 feet 6 inches in width. if the perimeter of the window must have caulking that costs 32cents per inch, how much will the caulking cost?? the answer is $67.20 but i got 846.73 :( what i did... 
Science/Math/HElP
Science A 25N object is 3 meters up. How much potential energy does it have? our teacher said that the formula for finding out potential energy is PE = Mass * Gravity * Height. The gravity on Earth is always 9.8, but my problem is that instead of mass the object is measured ... 
math,correction
Can someone help me with these...plz Simplify 2radical (12) + 4 radical (27) if i simplify radical (12) i get 2radical (3) then if i simplify radical (27) i get 3radical (3). so now i don't know if i'm doing this correctly or how to set it up... 2 sqrt 12 + 4 sqrt 27 4 sqrt 3... 
math
My Math Problem When wrapping a birthday gift for his mother, Kenji adds an additional 2.5 square feet of gift wrap to allow for overlap. How many square feet of gift wrap will Kenji use to wrap a gift 3.5 feet long, 18 inches wide, and 2 feet high? My answer is 30.5 square feet 
Chemistry
1/[N2O] = 1/(1.75M) + (1.10E3M^1 S^1)(1852s) [N2O] = 0.383 M I know I posted a similar question but I am having trouble with this one as well. Should I do 1/1.75 first and then add 1.10e3 and then multiply by 1852? Math(Thank you for your help)  john, Friday, March 9, ... 
Math
There is a football field and the length shows 120 yd and the width is 53 1/3 yd a. What are the dimensions of a football field in feet? b. A chalk line is placed around the perimeter of the football field. What is the length of this line in feet? c. About how many laps around... 
math
$340,000 in budget for 210 employees inyr 1988, in1989 there were 267 employees with same budget. What should've been budget for 1989 and what was % of change from 1988 to 1989? Show me the formula for the answer Nicole: The way this works is that you do as much of a problem ... 
Math
As you can see from my nickname, math and I don't have great history. That is why I would like someone to check my answer. Q: Samantha types 40 words per minute. How many words can she type in 8 minutes? My Answer: 320 How I got to this: This question wants me to do ... 
math
1.solve for the given variable: x + 1/2 = 1 1/2 3/4 1*** 2 3 2. solve for the given variable: 10/13n = 30/39 20/13 0 100/169 1*** 3. solve for the given variable: k3/4 = 10 43 5.5*** 37 52 PLEASE HELP ME WITH MY MATH!!!! 
Math
Diane took a math test. The ratio of the number of problems Diane got incorrect to the number of problems she got correct was 2:7. If the test had 36 questions on it, how many problems did she get correct? 
Math Word Problem
Please help with this math word problem: Jamal has a 5X7 picture that he took on his summer vaction and he wants to use a photo copier to enlarge it to an 8X10 picture. To enlarge Jamal has to specify a percent between 50% and 200% on the copier. Explain 2 different ways Jamal... 
Math
Name School Team Event 3: Logic and Reasoning (with calculators) 5th/6th grade Math Meet ‘08 For each number pattern, fill in the next five terms. (2 pts. each blank) ANSWER KEY 1st term 2nd term 3rd term 4th term 5th term 6th term 7th term 8th term 9th term 10th term 1) 2) ... 
Math
Hello I did my math homework, but I need someone to check if I did it right or not. 1. A = z>=4 B = z<7 Write A or B and A and B using interval notation Answer: A or B = (infinity, infinity) A and B = [4,7) 2. Write the algebraic expression for the following: 8 is less ... 
Math
A math class has girls and boys in the seventh grade and girls and boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls? Write your ... 
math
Hi I am looking for a certain number line for a test you guys should have a place in search so we all can show you if you have it then this web site will be poppen well i had a math qestion to it goes like this i had 55 apples and i got 100 more then i gave 44 away then I ... 
math help please
two cards are dealt in succession from a standard deck of cards. find the probability that the first card is a diamond or a king. probability that the second card is red given that the first card was a heart. if two dice are rolled, what is the probability of rolling at least ... 
Fourth grade math  math book PearsonRealize
Homework 63 (1) Kareem has 216 roleplaying game cards. His goal is to collect all 15 sets of cards. There are 72 cards in a set. How many more cards dose Kareem need to reach his goal? (2) Nichole has $9 to spend on cards. She finds friends with the same amount of money to ... 
Math
A glass is filled with water and the total weight is 220g. If the glass is halffilled with water, the total weight is 120g. What is the net weight of the glass? There may be a logic way of doing it but the following is the longer "math" way. G = weight of the glass W = weight ... 
MATH
1 My Math problem Intergers 2(2) = 4 iS 4 CORRECT 2.Between noon and 3pm, temp dropped 9 degrees (f). It increased 4 degrees (f) between 39m & 5pm and dropped 15 degrees(F) between 5om and midnight.If the temperature was 2 degrees (f) at midnight, what was the temperature... 
Math
Please exlain how I "use the power of ten to change each to a decimal". I was in a band lesson when my math teacher taught this. Thanks. 4 over 50 9 over 25 (fractions) 4/50= 0.08=8.0*10(exponent2),exponent2 means to move the decimal point to the left 2 spaces.. 9/25=0.36=3.... 
math
The boy decided to ride the terror tower. at its maximum height, the ride reaches 65m above ground. When the boy reaches the top of the tower, his gum falls out of his mouth. the height of the gum can be given by the model: h=654.9t^2 where t is in seconds and h in metres. a)... 
english literature
hi i have written a review below but its word limit is very high. please help me reduce it to around 200 words or a bit more. thanks in advance. 1. Introduction: Overwhelmed by political intrigue, confronted by a world adversarial to moral sensibilities, the play dramatizes ... 
english literature
hi i have written a review below but its word limit is very high. please help me reduce it to around 200 words or a bit more. thanks in advance. 1. Introduction: Overwhelmed by political intrigue, confronted by a world adversarial to moral sensibilities, the play dramatizes ... 
math
There are 25 students in math class. 15 students are female. What percent of the class is female 
math
in math class ,the ratio of boys to girls are 4:8 ,if they are 24 girls in the class,how many boys are there 
math
Could someone please show me what I did worng in my math questions? any help will be greatly appreciated! I put my teachers response under the questions 4. Solve: 52x + 1  = 55 Divide both side by 5: 2x+1=11 2x+1=11 and 2x+1= 1 +1 +1 +1 +1 2x = 12 2x = 10 X=5 x=6 What ... 
MATH
I have math questions I need to check my answers can you please help me 1. 4x4x4x4x4 as a power of 4 answer 4 to the fifth power 2.a bedroom is 10 ft by 11 ft what is the perimeter? answer 42 ft evaluate 72/89/3=6 3.Jamal is fencing a rectangular field that measures 25 ft by ... 
Math HELP PLEASE
How many inches a wall in an everyday house might be? Sorry this is for a math portfolio, this isn't the question, but I just need the inches of a wall. I did use measuring tape. I got 22, even though measuring tape, it measured in Feet and Meters. I used another measuring ... 
Math
Ok I'm on castle learning and for homework this weekend we have to do #14 (assignments) that is due on Saturday @ midnight because that the time it will close and I need help on this question. My assignment is: Math 7 (Q1) Assign #2  Fractions (i already did the others) Qs. ... 
math
Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: ERERE If the Exponents are playing at home, there is a 60% chance they'll ... 
math
Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: ERERE If the Exponents are playing at home, there is a 60% chance they'll ... 
Tutor
does anyone know where i can get a free interactive online tutor? I don't really need it all the time, I just need one for math when I'm confused. You guys all do a great job but I was wondering if anyone knows where a tutor would be. Anywhere from AIM to email. Or something? ... 
statistics
Calculate the zscore for each set of data. Determine who did better on her respective test, Tonya or Lisa. Student English Test Grade zScore Student Math Test Grade zScore John 82 Jim 81 Julie 88 Jordan 85 Samuel 90 Saye 79 Tonya 86 Lisa 82 Mean 86.50 81.75 St. Dev. 3.42 2.... 
math
) A wierd number is a number that is the product of two consecutive primes, such as 7x11=77 . What is the least common multiple of the 5 smallest wierd number 7) According to an ancient belief, when a friend visits a sick person, 1/70 of his sickness is taken away. What is the... 
math, help
can someone give me suggestions i am learning how to graph linear equations with two variables. What are two methods of graphing lines? That include order pairs, axes,slope, and intercepts. Can some help me when you get a few minutes i'll appreciate it.... thanks a million ... 
english confused
ive read this story over five times and still don't really get the meaning of bia's dream help plzz RED MESA, Arizona (Achieve3000, July 21, 2007). Although she grew up as a Diné, the term Navajo members use to describe their nation, young Andrethia Bia measured her success ... 
math;);)
During one term in Math 310, Min Lee took seven tests, the last of which carried twice the weight of each of the others when averages were computed. Min’s testscore vector for the term was [84,78,91,80,72,88,83]. Show that Min’s final average, a weighted average, can be ... 
English.
I have an English project on Julius Caesar. I'm a sophomore in high school, by the way. I have to have a quote from act five of the play and connect it to something that happened in the last fifty years. I have absolutely no idea what to do and I have to have the quote picked ... 
math(check answers please)
please check my math answers again thanks. by the age of 27,justin had visited 25 out of the 50 states.what fraction of the states had justin visited?write the answer in simplest form. A.2/1 B.25/50 C.1/2(I PICKED THIS) D.1/3 Heather drove 10 miles in 22 minutes.which is the ... 
eng lit
please proof read my short story please and make some correction LoveHate story “Happy birthday Khushi”, her family said as they came to her room at midnight. “Thank you, Mom, Dad and my lovely sister”, Khushi said with a huge smile. Khushi laid down on her bed and ... 
English plz help me .
Please help me in english .I have to submit this essay very soon.plz Throughout the history, man has always been obsessed for the immortal life .Gilgamesh was one of them. Who has desire for immortal life. He was a king of urak. He was powerful and full of wisdom but he ... 
Math  Steve
I posted this question yesterday that you answered, so thank you, but how do I put this in my calculator to get this answer? If the exponential equation of best fit is y= 2.9046(1.9798)^x, when will the population be more than 13 million? How would I figure this out? I already... 
history
the Puritan dilemma can someone help me check my answers the answers with an (*) at the end them are the ones i think are right 1. Englishmen rejoiced when Henry VIII turned his back on the Pope because now they felt they would be free to join the Protestant Reformation and ... 
history
the Puritan dilemma can someone help me check my answers the answers with an (*) at the end them are the ones i think are right 1. Englishmen rejoiced when Henry VIII turned his back on the Pope because now they felt they would be free to join the Protestant Reformation and ... 
math
Hi, I have a math problem that I can't understand how to write the equation for. The question says: a ball is thrown upwards from an initial height of 20 meters at an initial velocity of 10 meters per second. Write an equation for the height (h) of the ball at time (t). My ... 
Math
Consider a system of notebook computers for a college math laboratory. The set of computers costs $10,000 and will be salvaged for $2,000 at the end of a 3year period. Prepare a depreciation schedule using a 150%declining balance rate for the system. The depreciation ... 
4th grade Math
Miguel would like to figure out how many blocks he would need to build the 25th dragon without actually building it. He knows that there is a pattern to his hexagon dragons. Can you write a rule in words or a math expression that Miguel can use to figure out the total number ... 
Sciencemath
The equation for the decomposition of silver oxide is 2(Ag2)o yields 4Ag +o2. Set up ratio to calculate the number of oxygen molecules released when 1 gram of silver oxide is broken down. There are 2.6 x 10 to 21 power molecules in 1 gram of silver oxide. I know that it is a 2... 
math 116
Will someone please help me slove this problem. A family refers to a group of two or more people related by birth, marriage,or adoption who resides together. In 2,00in Country A, the average family net worth was $460,000, and there were about 9.3 x 10 to the seventh power ... 
Math 213 Elementary Math
Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many different ... 
Math 213 Elementary Math
Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many different ... 
Math 213 Elementary Math
Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many different ... 
Math 213 Elementary Math
Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many different ... 
Math 6 scale math
A model of a rail road station has a scale of 1 inch equals 3.5 feet. The dimensions of the model railroad are 34 inches by 18 inches. What are the dimensions of the actual railroad station? 3.5 feet by 18 feet 34 feet by 63 feet 102 feet by 63 feet 119 feet by 63 feet How do ... 
fractions
my teacher gave us some fraction problems for homework, but I'm confused about how to go about solving the problem. The problem is what is 2/4 of 8. Can you show me the steps so I can do the rest of the math problems? 2/4 reduces (or simplies if you prefer) to lower terms. ... 
Business Math
Consider a system of notebook computers for a college math laboratory. The set of computers costs $10,000 and will be salvaged for $2,000 at the end of a 3year period. Prepare a depreciation schedule using a 150%declining balance rate for the system. The depreciation ... 
business math
Consider a system of notebook computers for a college math laboratory. The set of computers costs $10,000 and will be salvaged for $2,000 at the end of a 3year period. Prepare a depreciation schedule using a 150%declining balance rate for the system. The depreciation ... 
math
At the faculty costume party , each teacher from Transylvania Middle school came dressed as his of her favorite creepy creature . The teachers arrived one at a time , and when a new teacher came in , each of the teachers already there lined up at the door and shook hands with ... 
English
posted by rfvv Tuesday, April 17, 2018 at 7:16pm 1. He goes to an academy to study math and English. [Is 'an academy' in generic use? Or Does 'an' mean 'one'?] 2. He goes to academies to study math and English. [Is the word 'academies' in generic use?] 3. He goes to the ... 
5th grade math and science question
Can you tell me if I answered these correctly? SCIENCE: How is the basic structure of living organisms different from that of nonliving organisms? MY ANSWER: Living things need energy, nutrients, water and sunlight. Non Living things have no life at all. MATH: Explain how an ... 
Mathematics
Raymond took a survey of classmates to determine the favorite subject of the students in his middle school the results of his survey are shown in the table english=9 math=17 science 13 social studies=11 There are 300 students in Raymond's middle school based on his results ... 
Math Decimals
Jason has 4 tiles. Each tile has a number printed on it. The numbers are 2,3,6, and 8. A decimal number is formed using the tiles and the clues. Be a math detective and find the number. Clues: digit in tens place is the greatest number. digit in tenths is less than the digit ... 
MATH!!
~Determine whether each sequence is arithmetic or geometric fund the next three terms~ *Doing a math unit test and stuck on these five* 1.14,19,24,29.... 2.2,8,16,32... 3.81,27,9,3... 4.What are the first four terms of an arithmetric sequence if the common diffrence is 1.5 ... 
math
I asked this question but no one answered it. Can someone please help explain this before I have my math test today. THANKS. A carpenter has several boards of equal length. He cuts 3/5 of each board. After cutting the boards the carpenter noticies he has enough pieces left to ... 
Math fractions
Carlos spent 1 1/4 hours doing his math home work. He spent 1/4 of this time practicing his multiplication facts. How many hours did Carlos spend practicing his multiplication facts? Need an answer in numbers and an answer in fractions. 
Axia Math 117
I am of need of HELP. I am working on the word problems for AXIA math 117 and I do not understand the first problem. I have listed the information below. I have tried many times and I have not figured this out. My assignment is due tomorrow and I am desperate for help with ... 
math To MS.SUE
Ms sue i really want a hundred percent on one algebra test im in algebra and im so smart and good at math but the thing is in my class we tooken 4 tests and on all of then i only got one wrong whit the most minor common mistake i don't understand just one question wrong i ... 
Music
Hello Instrument: Baritone Saxaphone I am to play the circle of forths for a band test. (only G to D flat) Although i realise for G i would start at E on the circle i don't understand what notes to play for each scale ..as i forgot too tell you we have to play the scale up and... 
Math Poster Project
I have do complete a poster for math but I have some confusing instructions at first. Please help me understand and provide an example using the directions below that were given to me: Choose four rational numbers. At least two of your numbers should be between 1 and 1, one ... 
Math
For a math homework assignment, Karla found the area and perimeter of a room of her house. She reported that the area of her rectangular living room is 180 square feet and that the perimeter is 54 feet. When drawing a sketch of her living room the next day, she realized that ... 
math
The number of boxes on a truck varies directly with the time since the workday began. At 3 hours after the workday began, there are 207 boxes on the truck. How many boxes should we expect there to be on the truck hours after the workday began? Show the math. 
Math
Math help please? Eric, Jose, Shannon, and Jackie wanted to plant a garden. Jose’s dad said they could use a rectangular space in the backyard that was 8 m by 4 m. The friends decided they would first like to make a colorful border for the garden using small flowering plants... 
Math
I need an expiation on a math concept, because I know the right answer, I just don't know why it is The problem says to find the absolute maximum and minimum of the function f(x)=x^312x over the interval [5, 2] I found the 1st der. 3x^212 and set equal to zero, got the x ... 
algebra
I am having trouble finding the greatest common factor when there is a variable. I have these two problems I need help with. 1. what is the GCF of 7x^2 and 14x^3 2. what is the GCF of 4x^5 and 6x^7 The exponents are throwing me off. http://www.math.com/school/subject1/lessons/... 
@ Angie  math
Angie, I've reposted your question. You've posted this several times on other people's questions. That's called piggybacking here and we delete posts that interfere with others' questions. Name: Angie Subject: math Message: Chad climbs a 57foot tower to ride a straight water... 
personal statement
this is my personal statement. please check my grammar and what other stuff i can add or remove? thanks Ever since I was a little kid and till a year ago, I really didn’t know what I wanted to be in life. I imagined myself to be a teacher when I was 8 years old. As I grew ... 
math
Hello! I am confused on how to do this math problem. Can you please help me or explain how you get this answer please? Miriam orders a shipment of 1, 500 pounds of ice for her supermarket. The ice comes in individual 5pound bags that cost Miriam orders$2.50 each. Miriam sells... 
English  please help i had posted 3 times and no
please can you make correction in my short story. i am very bad at grammar and even my parents does not khnow english well. can you proof reed my short story. LoveHate story “Happy birthday Khushi”, her family said as they came to her room at midnight. “Thank you, mom, ... 
math
Snell's law of refraction can be written as sin i = n sin r, where n is the refractive index from air to water, i is the angle of incidence, and r is the angle of refraction. In an experiment where a ray of light is directed from air into water, if the angle of incidence is 46... 
Math
Lee Holmes deposited $16,600 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $41,600 at 9% interest compounded semiannually. At the end of year 6, what is the balance in Lee’s account? I have tried and I... 
Math lovely Math
A boy had a box of animal crackers. He counted them out and found 20 cookies. 7 elephant cookies 6 tiger cookies 5 monkey cookies 2 zebra cookies Suppose the boy put all the cookies back into the box and took 1 out without looking. What is the probability of him choosing.. An ... 
math
Hi 2 math questions: 1. Is the sum of the same as adding the two numbers? the ? the sum of 14 and 16 2. Is the quotient the same as dividing.. the ? the quotient of 114 and 6 Sum is adding, quotient is dividing. 
math
My son is doing this in 6th grade math class. Mr. Weiss started painting the kitchen at 8:45 am and finished painting at 12:00 pm. About how many hours elapsed between the time he started painting and the time he finished painting the kitchen? Answers are 2h, 3h, 4h, and 5h. ... 
English
1. I laugh. Don't laugh, I tell myself. Think of tomorrow's math test. That works. I sit quietly.  In the book, 'Don't laugh' is in italic type. In the book 'Think of tomorrow's math test.'is in italic type. In that case... 
subtracting fractions
4/52/3=? Find the least common denominator of 5 and 3 so that you can convert the two fractions to fractions that have the same denominator, then you can subtract them. Repost if you still have trouble. http://www.math.com/homeworkhelp/HotSubjects_fractions.html =) The LCD of... 
Math
omg thank you soo much for helping me and the 3 question is 4/x = 36/100 = 1.)Mrs. Neruda has 80 math student last year. This year she has 100 math students. What percent shows the ratio between the number of students last year and the number of students this year? #2)A can of... 
Math
I am having a problem answering this math problem. Andrea has a box of marbles in it. She has seven red marbles, thirteen blue marbles and nineteen yellow marbles. If she reaches in and takes out marbles without looking, what is the fewest number of marbles she will need to ...