Sunday
July 24, 2016

# Homework Help: Math

## Recent Math Questions

math
what is 2 2/3x 5
Wednesday, May 18, 2016 by sckid30

math
The mean of a set of twelve numbers is 5.5. The mean of another set of eight numbers is k. The mean of the combined set of 20 numbers is 8.5. Find the value of k
Wednesday, May 18, 2016 by leah

Math
IT takes Holly 5 hours to type a paper. It takes Mike 6 hours to type the same paper. HOw long would it take them working together? Just average?
Wednesday, May 18, 2016 by Jamie

math
sally's cell phone company charges a flat rate of \$15.00 per month and \$0.12 per minute. eduardo's cell phone company charges a flat rate of \$18.00 per month and \$0.09 per minute. how many minutes would you have to use for the price to be the same for both plans?
Wednesday, May 18, 2016 by alex

Math
For questions 17-21, simplify the expression. 17. 8t^5 x 8t^5 18. -x(6x -7) 19. 5k^2(-6k^2-2k+6) 20. (3k+2)(k-3) 21. (-3y+2)(y+3) Please help
Wednesday, May 18, 2016 by BunnySayRawr

Math
Alex has \$20, and Ellen has \$12. Alex is saving \$3 per day, and Ellen is saving \$5 per day. After how many days will Alex and Ellen have the same amount of money? A) 3 days B) 4 days*** C) 5 days D) 10 days
Wednesday, May 18, 2016 by Scarlet

Math
Forty tickets are numbered consecutively from 1-40 three tickets are chosen at random and not replaced. whats the probability that two of the tickets are even?
Wednesday, May 18, 2016 by Maxx

math
If you roll a number cube 40 times, about how often can you expect to roll a 2?
Wednesday, May 18, 2016 by sean

Math
A rectangular window is 3/8 yard wide and 3/4 yard long. What is the area of the window in square yards?
Wednesday, May 18, 2016 by Doyle

Help my son's math
You are given a choice of having 3/4 of an hour of free time 2/3 of an hour of free time on Friday afternoon.Which option would you choose.
Wednesday, May 18, 2016 by Kevin

Math
What is the perimeter in meters of a rectangle that is 13 meters long and 10 meters wide
Wednesday, May 18, 2016 by Nick

Math
1.You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) experimental; the result is based on the number of possible outcomes experimental; the result is found by repeating an experiment ...
Wednesday, May 18, 2016 by jai

Math
A bag contains 4 blue marbles and 4 red marbles. If three marbles are drawn in a row without replacement, find the probability that the marbles will be the same colour?
Wednesday, May 18, 2016 by Markus

Math
Erin has four shirts (white, blue, red, black) and two pairs of pants (blue and black). She randomly chooses a shirt and a pair of pants. What is the probability that they are the same color? i'm so confused about probability. any advice?
Wednesday, May 18, 2016 by DA BENGALS RULE DA EARTH

Math
There are 4 children in a family, Find the probability that there is atleast 1 boy if it is equally likely to have a boy or girl?
Wednesday, May 18, 2016 by Shawn

Math/Applied
There are 9 numbers (1-9) placed in a bag, if two numbers are drawn without replacement in succession, find the probability that the sum of the numbers is odd?
Wednesday, May 18, 2016 by Charlottte

Math
The probability of hitting a target is 90%. what is the probability of missing the target 3 times? i have (1/10)x3
Wednesday, May 18, 2016 by Maxx

Math
Janelle is making a garden but she has only two right-angle joints to fasten the wooden border with. Croos out any polygon that has more than two right angles
Wednesday, May 18, 2016 by Dax

Math
Participants in a study of a new medication received either medication A or a placebo. Find P(placebo and improvement). You may find it helpful to make a tree diagram of the problem on a separate piece of paper. Of all those who participated in the study, 80% received ...
Wednesday, May 18, 2016 by Sarah Beth

Math
1. Simplify. 3x^2+ 5x-5x^2-4x+5-2 A.-8x^2-9x+3 B.2x^2+x+3 C.-2x^2-9x+3*** D.-2x^2+x+3 2. Add or Subtract.(8x – 2y) + (3x – 4y) A.11x+8y B.4x-y C.11x-6y*** D.5x+2y 3.(5x^2-4x-1)-(-4x^2-4) A.-9x^2-8x-1 B.9x^2-4x+3*** C.x^2-4x-3 D.9x^2+4x-3 4.The distance from Newtown ...
Wednesday, May 18, 2016 by Hot Chick14

Math
Which is the best display for the set of numbers of daily 911 calls made in a month, if you want to be able to identify the mode? a) histogram with intervals of 5 b) histogram with intervals of 3 c) line graph d) line plot I think its either A or D
Wednesday, May 18, 2016 by Val

Math
Which is the best display for the set of numbers of daily 911 calls made in a month, if you want to be able to identify the mode? a) histogram with intervals of 5 b) histogram with intervals of 3 c) line plot d) line plot I think its either A or D
Wednesday, May 18, 2016 by Val

Consumer Math
I have a question here that I was told to clarify. So I'll try to. Here's the question (its a 2 part question) 1) a) You purchase a new car for \$16,725.00 plus 6.15% sales tax. The down payment is \$1,400.00 and you have an average credit rating. How much interest is ...
Wednesday, May 18, 2016 by Absoulutely Outofoptions

Math
Which events are not independent? You toss three coins and get one head and one tail. You choose three different ice toppings for a sundae. You draw to colored pencils without replacement and get one red and yellow. You pull a yellow marble from a bag of marbles, returns it, ...
Wednesday, May 18, 2016 by Help Please!!

Math
On Friday night the local diner serves three main entrees, each with a choice of vegetable. The entrees are beef, chicken, and fish. The vegetables are spinach, broccoli, and carrots. How many possible dinners ( entree and vegetable combinations does the diner serve. List them.
Wednesday, May 18, 2016 by Help Please

Math
Jacob mixes the letters J,K,L,J,K,M,N and P throughly. Without looking Terry draws one letter. Expressed as a fraction, decimal and percentage what is the probability the K will NOT be the letter terry selects A. 1/4,0.25,25% B.3/4,0.75,75% C. 4/3,1.33%, 13.3% D. 5/8,0.625,62...
Wednesday, May 18, 2016 by Tyler

math
Lisa and Katie are playing a card game, and a total of 900 points has been scored. Lisa scored 150 more points than Katie. If you let l= the number of points that Lisa scored, and k= the number of points that Katie scored, then the problem can be represented by the system: l+k...
Wednesday, May 18, 2016 by Claire

Math
True or False Every integer is an natural number?
Wednesday, May 18, 2016 by Pujit Mathur

Math
On Friday night the local diner serves three main entrees, each with a choking of vegetable. The entrees are beef, chicken, and fish. The vegetables are spinach, broccoli, and carrots. How many possible dinners ( entree and vegetable combinations does the diner serve. List them.
Wednesday, May 18, 2016 by Tierra

Math
When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter. a 6 inch x9 inch rectangular cake pan that is 2 inches deep. A. which of these pans has the larger value? Justify your answer. B. Excluding the bottom...
Wednesday, May 18, 2016 by Anonymous Human

Math
Erica measured the middle school and made a scale drawing. She used the scale 1 inch = 3 feet. The gym is 63 feet wide in real life. How wide is the gym in the drawing?
Wednesday, May 18, 2016 by Anonymous

Math
A certain travel agency offered a tourthat will cost each person P 1500.00 if not more than 150 persons will join,however the cost per person will be reduced by P 5.00 per person in excessof 150. what will be the maximum profit?
Wednesday, May 18, 2016 by Gab

Math
1st question: Which events are not independent? You toss three coins and get one head and one tail. You choose three different ice toppings for a sundae. You draw to colored pencils without replacement and get one red and yellow. You pull a yellow marble from a bag of marbles...
Wednesday, May 18, 2016 by Anna

Which one of the following sample spaces correctly lists all the possible outcomes for flipping a coin and rolling a number cube? Let head be H and tails be T. a. H-1, H-2, H-3, H-4, H-5 b. H-1, T-1,H-2,T-2,H-3,T-3,H-4,T-4,H-5,T-5 **** c. H-1,H-2, H-3, T-4, T-5 ***- I picked ...
Wednesday, May 18, 2016 by Raven

Math
Find the volume of a triangular prim with the following dimensions round to the nearest whole number. Triangle base: 5ft triangle height:3ft prism height: 7.5ft
Wednesday, May 18, 2016 by Anonymous Human

Math
1st question: Which events are not independent? You toss three coins and get one head and one tail. You choose three different ice toppings for a sundae. You draw to colored pencils without replacement and get one red and yellow. You pull a yellow marble from a bag of marbles...
Wednesday, May 18, 2016 by Maddie

Math
An ice cream shop offers 5 different flavors of ice cream and 9 different toppings. How many choices are possible for a single serving of ice cream with one topping?
Wednesday, May 18, 2016 by Katelyn

Math
Find the volume of a triangular prim with the following dimensions round to the nearest whole number. Triangle base: 5ft triangle height:3ft prism height: 7.5ft
Wednesday, May 18, 2016 by Anonymous Human

Spanish
What are schools and organizations in silicon valley doing to foster growth for hispanic and latino students? a. Offering math programs in the summer b. Offering english classes year round C.offering tutoring classes in science during the weekends d. offering writing classes ...
Wednesday, May 18, 2016 by Girltt

Math
a contractor completed the construction of two buildings last year The Keslo building cost 84.5 million The Jones building cost 33.8 million which statement is true when comparing the costs of the two buildings? A: Keslo cost 2 1/2 times the cost of Jones B: Jones cost 2/3 the...
Wednesday, May 18, 2016 by PLEASEHELP! :D

Math
Tony works in a factory that produces 1,000 computers each day. When 50 computers were sampled, it was fount that 7 were defective. Estimate how many defective computers are made each day.
Wednesday, May 18, 2016 by Sadie

Math
A survey showed that 36% of car owners prefer two door cars, 52% prefer four door cars, and 12% have no preference. You ask 300 people. How many do you think will prefer the two door cars.
Wednesday, May 18, 2016 by Maria

Math
the probability of winning a game is 25%. how many times should you expect to win if you play 20 times.
Wednesday, May 18, 2016 by Maria

Math
from a barrel of colored marbles, you randomly select 5 blue, 2 yellow, 3 red, 4 green, and 2 purple marbles. Find the experimental probability of randomly selecting a marble that is not yellow.
Wednesday, May 18, 2016 by Maria

Math
Tamara needs to buy motor oil to fill the 3 empty cylindrical barrels at her oil service center. Each barrel is 7ft deep and has a radius 4ft. What is the volume of oil needed? Use 3.14 for ð.
Wednesday, May 18, 2016 by Anonymous Human

Math
Which survey question is biased? “Should the President of the United States serve a six-year term “Which meal—breakfast, lunch, or dinner—is your favorite meal of the day?” “During which month do you prefer to go on vacation?” “Do you ...
Wednesday, May 18, 2016 by Steve

math
find the ascending order using fractions of 1/3,1/4,2/3,57
Wednesday, May 18, 2016 by vency

Math
Lionel's front yard is the shape of a square and has an area of 225 square meters. What is the length in meters of one side of Lionel's front yard? Please help.
Wednesday, May 18, 2016 by Anonymous

Geometry/math
a cylinder has a base diameter of 14 inches and a height of 18 inches . what is the volume of the cylinder
Wednesday, May 18, 2016 by Anonymous

Math
Match the math sentences that count up and back by tens. 47+40=88 57+30=87 46+10=56 56-10=46 87-40=47 87-30=57 Write the matching math sentences.
Wednesday, May 18, 2016 by Student

Math (Check)
the probability of a basketball player hitting a foul shot is 1/3. How many shots would you expect her to make in 90 attempts? A. 30*** B. 60 C. 3 D. 45
Wednesday, May 18, 2016 by Gracious Human

Math Plz Explain
A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jameson picks a fruit at random and does not replace it. Then Brittany picks a fruit at random. What is the probability that Jameson gets a banana and Brittany gets a pear...
Wednesday, May 18, 2016 by Gracious Human

Math
A bag of apples weighs 6 pounds,there are 12 apples in the bag,how much does each apple weigh?
Wednesday, May 18, 2016 by Anonymous

Math
Match/Choose the math sentences that count up and back by tens. 47+40=88 57+30=87 46+10=56 56-10=46 87-40=47 87-30=57 Write the matching math sentences.
Wednesday, May 18, 2016 by Student

math
suppose another person was surveyed who said that he spends 3 hrs sleeping at night. How would this affect the mean median mode and range
Wednesday, May 18, 2016 by missy

math for IT
there are 2000 students in a course . they wrote a Mathematics test which was scored out of 40 and then converted to percentages. Draw a flowchart that reads the names , sex and score of each student and outputs the names of the male students that scored above 75% and how many...
Wednesday, May 18, 2016 by Aletta

Math
The areas Of Two Similar Triangle Are 144cm & 81cm . If One Of The First Triangle 6cm, What Is The Legth Of The Correspoding Side Of The Secod?
Wednesday, May 18, 2016 by Greda 9

Math
S and E had an equal amount of . After s had received an additional amount of money that is equal to what she had and E spent \$4, S had \$40 more than E. How much money did E have at first?
Wednesday, May 18, 2016 by Mk

Math
Write a story problem to represent 6 divide 1/5
Wednesday, May 18, 2016 by Jalen

math
Ashley bought a circular rug for her room. the rug has a diameter of 9 feet. Her room is rectangular-shaped and measures 12 feet by 18 feet. about how much of Ashley's room will not be covered by the circular rug?
Wednesday, May 18, 2016 by jen

math
The table shows the average production data for three products over the last month. The difference between the costs and the sale price is the company profit for one unit. If a new production method allows the labor costs of Product C to be reduced to \$3.45 per unit while ...
Wednesday, May 18, 2016 by vin

math
Jack typed 80 words per minute when he enrolled in a typing course. His typing speed increased by 3% two weeks into the course. At the end of the course, Jack was able to type his entire 1,680 word document in 20 minutes. What was the percent of increase in his typing speed ...
Wednesday, May 18, 2016 by vin

math
For the school play, most of the chairs are in rows of 10 each, with one row of 8 chairs. If there are 78 chairs altogether, how many rows are there?
Wednesday, May 18, 2016 by lexis

What is the width in feet if a window is 60 inches wide?
Wednesday, May 18, 2016 by Anonymous

math
a customer went to a boutique and asks the tailor to design a table cloth in the shape of hypocycloid with the equation r(t)= cos^3 i + sin^3 j . she insists to have laces at every edge of the table cloth. calculate the lenght of laces that the tailor have to buy.
Wednesday, May 18, 2016 by anonymous

Consumer Math
Could someone help me answer these!? I feel like no one else will help, and my teachers aren't really any help either. 1) a) You purchase a new car for \$16,725.00 plus 6.15% sales tax. The down payment is \$1,400.00 and you have an average credit rating. How much interest ...
Wednesday, May 18, 2016 by Absoulutely Outofoptions

math
crate measures 4 feet by 12 feet by 7 feet. what is the are of its smallest side?
Wednesday, May 18, 2016 by wele

math
What is the rule of the sequence: 5, -10, 20, -40? find the next three in the sequence
Wednesday, May 18, 2016 by Anonymous

math
area of 540,000 square miles holds population of 64.1 million calculate the density
Wednesday, May 18, 2016 by wele

math
8, 8.5, 9, 9.5 What is the rule of the sequence?
Wednesday, May 18, 2016 by Anonymous

math
Which expression is a trinomial? a. 3x^2y^2x^2 b. x^2+y^2+z^2 c. x^2+y+1/2 d. x+z^2 My answer: B

Math
I want to make quilt with an area of 42 sq.feet. what are its possible dimensions if they must be whole numbers? Please show his you got your answer
Tuesday, May 17, 2016 by Jen

Math
Consider the following series: 1,2,3,4,5,10,20,40....which starts as an arithmetic series? ...but after the first five terms becomes a geometric series. Prove that any positive integer can be written as a sum of distinct numbers from the series. I know how to do the base case
Tuesday, May 17, 2016 by MO

Math (pre-celc 12)
Solve this algebraically for the exact values (Meaning find the x-intercepts): (1/x)=x/(3x+18) I'm not sure what to write as the common denominator. I thought it was: 4x+18 because (3x+x+18)=(4x+18), but I'm not sure what to do from there. Thanks!
Tuesday, May 17, 2016 by Jana

Math help
prove that (A ∪ B)* = A*(BA*)*
Tuesday, May 17, 2016 by Denial

Math
Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao working together to clean a typical pool? I'd like to know how to work out this problem in order to find the answer.
Tuesday, May 17, 2016 by anon

Math
The scale has 4 bananas on it. Each banana weighs the same amount. If Molly wants to buy a total of 5 pounds of bananas, how many more bananas does she need to add to the scale? Each banana weighs 2 pounds
Tuesday, May 17, 2016 by Help

Math
What is the primeter of the rectangle 1/2 + 1/2 + 1/3 + 1/3
Tuesday, May 17, 2016 by Brooklyn

math
The pressure P, of a gas varies inversely with its volume, V. Pressure is measured in units of Pa. Suppose that a particular amount of a gas is initially at a pressure of 84 Pa at a volume of 36 L. If the volume is expanded to 216 L, what will the new pressure be? I don't ...
Tuesday, May 17, 2016 by anon

word problem math
Keith has p pennies, n nickels, and d dimes in his pocket. The total number of coins is 9. The expression 0.01p+0.05n+0.10d0.01p+0.05n+0.10d represents the value of the coins, which is equal to \$0.53. He has two fewer nickels than dimes. How many pennies does Keith have? Keith...
Tuesday, May 17, 2016 by Claire

math
Farmer Brown planted corn and wheat on his 450 acres of land. The cost of planting and harvesting corn is \$280.00 per acre. The cost of planting and harvesting wheat is \$125.00 per acre. If Farmer Brown's total cost was \$102,750, how many acres of corn did he plant?
Tuesday, May 17, 2016 by Grant

math
The area of a triangle varies jointly with the height of the triangle and the length of its base. The area of one triangle is 200 square centimeters when its height is 25 centimeters and its base length is 16 centimeters. What is the area of a triangle having a height of 20 ...
Tuesday, May 17, 2016 by Claire

Math
- Anurag is buying a house for \$100,000 and needs a mortgage loan. Bank A wants him to repay the loan in 240 months with monthly payment of \$600.72. Bank B wants him to repay the loan in 360 months with a monthly payment of 389.94. Which bank should he choose? Explain. - Kwane...
Tuesday, May 17, 2016 by Lil

Math
Jim is going to refinish the top and sides of an old wooden storage chest shaped like the cube shown below (there is a picture of a cube with the measurement 19.5 inches) Which is the closest to the surface area in square inches that Jim is going to refinish? Please help I'...
Tuesday, May 17, 2016 by JM

math
The volume of a pyramid varies jointly with the base area of the pyramid and its height. The volume of one pyramid is 24 cubic inches when its base area is 24 square inches and its height is 3 inches. What is the volume of a pyramid with a base area of 15 square inches and a ...
Tuesday, May 17, 2016 by Claire

math
Jill's age 5 years ago was 4 less than 3 times barry's current age. if the product of their ages now is 200, what is each of their current ages?
Tuesday, May 17, 2016 by gabby

math
Find the distance Lucille traveled if she drove 3 1/2 hours at a rate of 58 mi/hr.
Tuesday, May 17, 2016 by Anonymous

Math
A banner is shaped like a parrelelogram. The banner has a base length of 3.25 meters and an area of 4.55 square meters. Explain how to find the height of the banner
Tuesday, May 17, 2016 by Alice

math
The first digit of a 3-digit telephone area code is 6 or 7. The second digit is 9. How many codes are possible?
Tuesday, May 17, 2016 by Anonymous

Math
Andreas garden is shaped like a parrelelogram with a base length of 6.5 meters and a height of 4.8 meters. She wants to increase the area by doubling the base length and increasing the height by 1.5 meters. By how much will the changes increase the area of the garden. Explain ...
Tuesday, May 17, 2016 by Oscar

Math
A triangular sail has a base of 3 feet and a height of 5 1/2 feet. What is the area of the sail?
Tuesday, May 17, 2016 by Oscar

Math
In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be surveyed in order to be 95​% confident that your sample mean is within 11 minutes of the population​ mean? Assume that the standard ...
Tuesday, May 17, 2016 by John

math
A rectangular parking lot has an area of 2/3 of a square kilometer. the width is 1/2 of a kilometer. What is the length, in kilometers, of the parking lot?
Tuesday, May 17, 2016 by debra

Math
If i have 8cups of raisins and i use 1/3cups for one bag how many bags can i make
Tuesday, May 17, 2016 by Hannah

math
Charlie has scored 76 , 87 , 69 , and 74 on his previous four tests. What score does he need on his next test so that his average (mean) is 77 ?
Tuesday, May 17, 2016 by gracie

Lacy has \$600 set aside to build a rectangular exercise kennel for her dogs. She will buy fencing material for \$15/ft. Because the side of an existing barn will be used for one of the sides of the kennel, only three sides need to be fenced. A.) Determine the dimensions of the ...
Tuesday, May 17, 2016 by Heaven

Math
Tickst number 1-15are placed in a hat ,2 Tickets Are drawn at random without replacement find the probability that both Numbers Are Greater then 9 B.) the First Number is Prime and the Second number is Composite?
Tuesday, May 17, 2016 by Roman

Math
I have 2 similar triangles. The surface area of the smaller one is 27m squared. The scale factor is 3. How do I find the surface area of the larger triangle
Tuesday, May 17, 2016 by Mary

MATH
sorry I posted this question before. I have been ill.I still need help. word problem Upright posts are to be placed at 9 inch intervals on 3 sides of a deck which measures a total of 36 feet. How many upright post will will be needed? 36/3=12, if i divide 12 by 9 it will not ...
Tuesday, May 17, 2016 by Amy

Math
An auditorium has 400 seats. Each row in the auditorium has 16 seats. In which equation does r represent the number of rows of seats in the auditorium?
Tuesday, May 17, 2016 by Jamiyah Washington