Tuesday
June 28, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

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

Math(Reiny Please Help)
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

math
Given that the sum of the first 20 terms of an arithmetic sequence is 1150 and the fifth term is twice the second term . find: 1.The first term and the common difference 2. find the general formula
Tuesday, May 17, 2016 by martin np

Math
Does the equation represent a direct variation? If so, find the constant of variation. 5x = -3y A. yes; k = 5/3 B. yes; k = -5/3 C. yes; k = 3/5 D. no
Tuesday, May 17, 2016 by Martin1162

math
an agriculture field is rectangular, with dimensions 100m by 42m.a 20 m deep well of diameter 14 m is dug in a corner of the field and the earth taken out is spread evenly over the remaining part of the field.find the increase in the level of the field
Tuesday, May 17, 2016 by abel

Math
Find the x- and y-intercept of the line. -4x +2y = 24 A. x -intercept is -6; y-intercept is 12 B. x -intercept is 12; y-intercept is -6 C. x -intercept is -4; y-intercept is 2 D. x -intercept is 2; y-intercept is -4
Tuesday, May 17, 2016 by Martin1162

MATH
0.016*0.084/0.48
Tuesday, May 17, 2016 by SARKODIE

Math
Does the equation represent a direct variation? If so, find the constant of variation. 2x - 4y = 0 A. yes; k = -4 B. no C. yes; k = 1/2 D. yes; k = -1/2
Tuesday, May 17, 2016 by Martin1162

Math
The scatter plot shows the number of mistakes a piano student makes during a recital versus the amount of time the student practiced for the recital. How many mistakes do you expect the student to make at the recital after 6 hours of practicing? file:///C:/Users/Martin%...
Tuesday, May 17, 2016 by Martin1162

Math
Lesson 13 unit 5 test I need help
Tuesday, May 17, 2016 by Lollzz

Math
-3m(m+8) A.-3m^2+24 B.-3m^2-24m C.-24m^2 D.-4m+5
Tuesday, May 17, 2016 by Help me plz!!!

math
a plumber charges $25 for service call plus $50 per hour what is the cost 8 hours? What is 10 hours?
Tuesday, May 17, 2016 by daniel

Math/algebra
81,85,82, 93,85,84,95,87,88,91 Find the standard deviation.
Tuesday, May 17, 2016 by Charles HELP ME PLEASE IDK WHAT TO DO

Math/algebra
What is the 20th term of the sequence that begins with −2, 4, -8, 16 ANSWER CHOICES: A)2,097,152 B)524,288 C)-524,288 D)1,048,576 Answer Th
Tuesday, May 17, 2016 by PLEASEE HELP ME PLEASE

Math Help Please I Don't Understand
A Ferris wheel has a diameter of 60 feet. When you start at the bottom of the Ferris wheel, you are 2 feet from the ground. The Ferris wheel completes one rotation in 2 minutes. Create a function that represents your height relative to the center of the Ferris wheel as a ...
Tuesday, May 17, 2016 by GG

math
What is the 20th term of the sequence that begins with −2, 4, -8, 16 ANSWER CHOICES: A)2,097,152 B)524,288 C)-524,288 D)1,048,576
Tuesday, May 17, 2016 by Kelly

Math
find the degree of -5w^3-4w^2+7w+16
Tuesday, May 17, 2016 by Hot Chick14

Math
1. Use formulas to find the lateral area and surface area of the given prism. Round your nearest answer to the nearest whole number. use the large 19x6 m rectangles on the top and bottom as the bases. Left corner is 2m, bottom length is 19m, and right face is 6m. A) 100m^2 ; ...
Tuesday, May 17, 2016 by Tim

Math
Estimate, correct to three decimal places, all the zeros of the polynomial P(x)=x^4-4x^3+5x-1
Tuesday, May 17, 2016 by Anonymous

math
in a certain town 40% of men are smokers. It is known that 6% of men in this town have lung disease. Of those men having lung disease 85% are smokers. A man is selected at random from this town. Consider the events: D<<the selected man has a lung disease>> and S<...
Tuesday, May 17, 2016 by angy

math
Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? If it is a direct or inverse variation, write a function to follow it. X:2 5 20 40 Y:40 20 5 2 ANSWERS AVAILABLE TO CHOSE: A) NEITHER B) INVERSE VARIATION Y=20/X C)...
Tuesday, May 17, 2016 by josh

Math
Estimate, correct to three decimal places, all the zeros of the polynomial P(x)=x^4-4x^3+5x-1
Tuesday, May 17, 2016 by Anonymous

math
in a business transaction the mark-up is 80%,if the cost increases by 20% but selling price remains the same,calculate % change and profit
Tuesday, May 17, 2016 by blodwick van zyk

math
(1 point) Calculate the mean and median of the following grades on a math test: 97, 88, 89, 86, 83, 80, 78, 74, 64, 62, 49 Mean = Median = Is this data set skewed to the right, symmetric, or skewed to the left? (Enter "SKEWED RIGHT", "SYMMETRIC", or "...
Tuesday, May 17, 2016 by shehroz

Math
7n - 3 = 2n +12
Tuesday, May 17, 2016 by Larremy

MATH
Two rectangles have the same width. One is 12 units long and the other is 8 units long. The area of the first rectangle is 320 square units more than the area of the second rectangle. Find the width of each rectangle.
Tuesday, May 17, 2016 by Amy

math
the table below shows the number of excellent service award (exsa) given to individuals and companies from 1996 to 1999 Year. Individual award. Company 1996. 935. 32 1997. 1764 40 1998. 1985. 52 1999. 2492. 63 A. Calculate the percentage increase in the number of in dividual ...
Tuesday, May 17, 2016 by Atta

math
The Singapore Assault Rifle 21 (SAR 21) developed locally will be standard issue for Singapore soldiers in the 21st century, replacing the M-16. The SAR 21 boasts many advanced features, one of which is a laser aiming device. The overall length of the SAR 21 is 80.5 cm while ...
Tuesday, May 17, 2016 by Atta

math
if the perimeter of a rectangle is 50m what is the largest area possible
Tuesday, May 17, 2016 by hiral

math
if the perimeter of a rectangle is 50m what is the largest area possible
Tuesday, May 17, 2016 by hiral

Math
The ratio of the length of a rectangle to the width of a rectangle is 5:2 if the link is 45 centimeters what is the width of the rectangle in centimeters
Tuesday, May 17, 2016 by Becca

math
Katrina lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Katrina’s home and the football field at the exact point where an altitude to the right triangle formed by her home, the park, and the ...
Tuesday, May 17, 2016 by JCancer

math
Now suppose Streak-Shooting Shelly has moved to mars. Shelly is still adjusting to Mars. Her overall performance is down, but she still shoots better when she has just made a shot. Suppose Shelly has a 60% probability of making the first shot. If she gets the first shot, she ...
Tuesday, May 17, 2016 by m

math
Now suppose Streak-Shooting Shelly has moved to mars. Shelly is still adjusting to Mars. Her overall performance is down, but she still shoots better when she has just made a shot. Suppose Shelly has a 60% probability of making the first shot. If she gets the first shot, she ...
Tuesday, May 17, 2016 by m

math
a girl walks 800 m on a bearing of 129 degrees.calculate how far east and south she is from her starting point.
Monday, May 16, 2016 by joseph

Math
Y^2+9=-9y
Monday, May 16, 2016 by Anonymous

Math
concrete is to be mixed using cement and sand into the ratio 2:5. how much sand will be required to mix with 96 pounds of cement? use proportion to solve
Monday, May 16, 2016 by Hailey

Math
If a room is 12ft by 16ft how many 12 inch by 12 inch tiles do I need to cover it
Monday, May 16, 2016 by Jason

Math(Reiny Could You Help?)
The graph of the function g(x) has the same shape and direction of opening as the graph of f(x)= 3(x-2)^2+9. The graph of g(x) has a vertex that is 2 units to the right and 5 units down from the vertex of the graph of f(x). A.) Determine an equation of the function g(x) B.) ...
Monday, May 16, 2016 by Heaven

math
show that the following point are the vertical of a square(-2,4) (2,0) (2,8) and (6,-4),find AB, CD, AC, BD, AD
Monday, May 16, 2016 by odukoya

Math
Is pancake + waffle = a paffle?
Monday, May 16, 2016 by Awesome

Math
Is this an example of two-variable data? Data Management Marks: 74,81,66,53,92,45,80 Grade 12 Average: 77,87,68,67,85,55,76 i think it is..
Monday, May 16, 2016 by Rose

Math
1. Use formulas to find the lateral area and surface area of the given prism. Round your nearest answer to the nearest whole number. use the large 19x6 m rectangles on the top and bottom as the bases. Left corner is 2m, bottom length is 19m, and right face is 6m. If you google...
Monday, May 16, 2016 by Tim

Math
At 2:30 p.m. the thermometer outside of sharlene's window read 44.c. it had risen 3. between noon and 2:30 p.m and 12. between 7:00 a.m and noon. What was the temperature at 7:00 a.m
Monday, May 16, 2016 by Olivia

math
a room measures 22 feet by 28 feet. They are covering the floor with square tiles that measure 1 foot on a side and cost ​$0.89 each. How much will they spend on the​ tile?
Monday, May 16, 2016 by Natalie

Math
The ratio of golf balls to tennis balls in the coach's bag is 20 to 5. If there are 100 golf balls in the bag, how many tennis balls are in the bag?
Monday, May 16, 2016 by Elisa

math
which formula should be used to find the area of the composite shape 1.a(a=lw+bh) 2.b(a=2lw) 3.c(a=1/2bh=lw) 4.d(a=1/2bh=lw)
Monday, May 16, 2016 by darkwolfy

Math
On the reality TV show Last Man Standing, a package is thrown from a plane to the ocean below. The contestants must swim to the package to receive the "free pass" located inside the package. The path that the package follows can be modelled by the quadratic function ...
Monday, May 16, 2016 by Heaven

Math (Trig)
Convert the Cartesian coordinate (-1,2) to polar coordinates, 0≤θ<2π I know r is sqrt(5) but how would I find theta between 0 and 2pi? Thanks in advance!
Monday, May 16, 2016 by Giovanni

Mech. Engr./Dynamics/Physics/Math
A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...
Monday, May 16, 2016 by Jay

math
Carol wants to make a quilt using a scale of 1.5 inches = 2 feet. Her scale drawing is 7.5 inches by 10.5 inches. What is the area of the actual quilt?
Monday, May 16, 2016 by jakira

Math
A 6m ladder is leaning against a wall. The base of the ladder is 1.5m from the wall. Calculate the angle (to the nearest tenth) formed between the ladder and the ground.
Monday, May 16, 2016 by anonymous

Math
I am driving 65 miles per hour. I must drive 520 miles total. I have already driven 195 miles, how long will it take me to reach my destination. Use this equation to represent the number of hours to reach my destination? 65h + 195 = 520. A.2 hours B.5 hours C.15 hours D.22 hours
Monday, May 16, 2016 by Tonya

Math
33. A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a red marble and then a green marble assuming you replace the first marble? A) 1/24 B) 5/72 C) 5/66 D) 5/6
Monday, May 16, 2016 by Kyle

Math
Harry is a dog walker and he charges 15 dollars to come to my house, 2 dollars per mile walked. He charged me 19 dollars. Which equation could I use to determine howxfar he walked my dog. A. 2m + 5 = 19 B.19 + 15 = 2m C.19 + 2m =15 D.2m + 15 =15
Monday, May 16, 2016 by Tonya

math
Find the sum of the first one thousand positive integers. Explain how you arrived at your result. Now explain how to find the sum of the first n positive integers, where n is any positive integer, without adding a long list of positive integers by hand and without using a ...
Monday, May 16, 2016 by Anonymous

math
60 months × $425.00= $2550.00 = what's my iterest rate? =
Monday, May 16, 2016 by dumb dumb

math
angle PQR and angle TQV are vertical angles. The measure of the two angles have a sum of 100*. Write and solve an equation to find x, the measure of angle TQV.
Monday, May 16, 2016 by Mary

math
Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie use the random number table to find the experimental probability that of 5 flights, at least 2 will arrive late. The digit 0 represents flights arriving early. The ...
Monday, May 16, 2016 by helpppppp

Math
An ant is on top of a tree 23 meters tall, directly above her home, which is 0.3 meters below the ground. What is an expression that represents the difference in elevation between the ant and her home?
Monday, May 16, 2016 by Aubrey T.

Math calculation
A stock bottle contains 2.5 L of solution. How many 2 oz bottle can be filled using the stock solution?
Monday, May 16, 2016 by Samantha

math help
In 2011 a spots club offers its members three types of activities: volleyball basketball and tennis. Each member practices only one of the three activities:30% of the members practice volleyball, 20% of the members practice basketball, the rest of the members practice tennis. ...
Monday, May 16, 2016 by angy

math
how many natural numbers have 20 as their digit's quotient and 11 as their digit's number??
Monday, May 16, 2016 by selma

Math
The number is 13 less than the other. The other number is three fourths the first. What is the smaller number?
Monday, May 16, 2016 by Anonymous

Math
2.4 (n - 1)= 12
Monday, May 16, 2016 by Mark

Math
An initial investment in an account in which interest is compounded repeatedly is $813. If the time doubles the amount in 9 1/4 years, what's the annual rate going to end up being?
Monday, May 16, 2016 by Amber

math
if a plane flies at 285/h, how long will it take to fly from morgenhof to Neenthlinghof
Monday, May 16, 2016 by nompilo

Math
the height, in metres, of a nail in a water wheel above the surface of the water , as a function of time, can be modelled by the function h(t) = -4sin pie/4 (t-1)+2.5, where t is the time in seconds. During what periods of time is the nail below the water in the first 24s that...
Monday, May 16, 2016 by ...

math
Farah, Kate and Jane have managed their savings well. The sum of Farah and Kate's savings is $1548. Farah and Jane's savings sum up to $1842. The ratio of Kate to Jane's savings is 4 : 7. How much has Farah saved?
Monday, May 16, 2016 by Anonymous

Math
Work out, give your answer as a mixed number in its lowest form 6.3 * 1.2 6.3 *1.2 75.6
Monday, May 16, 2016 by Innocent Musa

Math
If you make $18 a hour and only work 15 hours a week, how much do you make a month?
Monday, May 16, 2016 by Amy

math
Using the formula, compute the true annual interest rate. Loan amount = $9,500 Monthly payments = $227.50 Time of loan contract = 5 years True annual interest rate (to the nearest tenth) = _____.
Monday, May 16, 2016 by angel

Math Help
1.) Find the arc length y=2/3x ^3/2 + 2 over (14,16) 2.) Find the arc length y=8x^3/2+7 over (0,6)
Sunday, May 15, 2016 by Erica

Mech. Engr./Dynamics/Physics/Math
A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...
Sunday, May 15, 2016 by Jay

Math
5x - 3 = 7x + 11 x=-4 3w -4 = w+8 w =6 Please check. Thanks
Sunday, May 15, 2016 by David

Math
1/3 (b-4) =1
Sunday, May 15, 2016 by Lexi

Math
I got 21 years and it was wrong. Can you help me solve this problem? sometime ago, julie purchased 11 acres of land costing $15,590. Today, that land is valued at $55,433. How long had she owned this land if the price of the land has been increased at 5% per year?
Sunday, May 15, 2016 by Anonymous

math
The circle below has a radius of 17y meters. Find the exact area and simplify the expression. Use pi for π.(A=πr^2) The area is..
Sunday, May 15, 2016 by Duran

Math
If a camera and a lock weigh 330 grams together. Also the same camera and a crown together weighs 670 grams. Also the weight of a crown and a lock is 470 grams. What is the weight of each individual object?
Sunday, May 15, 2016 by Matt

Math
At the Highland Hotel 578 of the 850 employees work directly with the guess. What percent of employees work directly with the guests? How do I figure it out?
Sunday, May 15, 2016 by Auntie

Math
Four friends went out to dinner.The total bill was 97.38 one of your friends has a coupon for 35 percent off and the group left a 18precent tip if each person payed the same amount how much did each person pay?
Sunday, May 15, 2016 by Randomkod

Math
Find the exponential function that passes through (0,5) and (4, 1/2). Formula is y=Ce^kx
Sunday, May 15, 2016 by Erica

Math
Mr.Marshal spent his salary of $8400 in the following manner: Rental.........1/5 Food...........1/10 Bank...........1/4 Miscellaneous.....the remainder. Calculate the following: (A)what fraction of the money was spent on MISCELLANEOUS. (B)How much did he spent on rental. (C)if...
Sunday, May 15, 2016 by Josiah

math
Dina and Masha start out on a bike path 10 km long at the same time. When Dina reaches the end of the 10 km, Masha still has 2 km left to bike. If Dina’s biking speed is 5 km/h, find Masha’s biking speed.
Sunday, May 15, 2016 by elizabeth

Math
Farmer Jimmy harvested rep lines.He used 1/3 of this for himself and gave one-sister of the remainder to his brother.He sold the test.calculate: (A)how many limes he kept. (B)how many limes he gave his brother. (C)how many limes he sold.
Sunday, May 15, 2016 by Josiah

Math
Jerry spent 1/5 of his allowance on a book and 3/8 of the remainder of his allowance for a pen.jerry remained with $12.00.calculate: (A)jerry's allowance. (B)the cost of the book. (C)the cost of the pen.
Sunday, May 15, 2016 by Josiah

Math
Cesar's sixth- grade class sorted books in the library. The class sorted 45 books in 90 minutes. Write an equivalent ratio to find how long it would take to sort 120 books.
Sunday, May 15, 2016 by Milo

math NEED HELP
simplify 4^3 times 4^4 divided by 4^9 help please!!
Sunday, May 15, 2016 by casdean

math
An ancient Korean drinking game involves a 14-sided die. The players roll the die in turn and must submit to whatever humiliation is written on the up-face: something like "Keep still when tickled on face." Six of the 14 faces are squares. Let's call them A, B, C...
Sunday, May 15, 2016 by AnonYmous

Math
A child's. Dose for cefadroxil is 30mg/kg body weight once a day for 14 days.what is the smallest bottle that will provide. Enough medication to last 14 days. If child weighs 44 lbs.
Sunday, May 15, 2016 by Denise

math
I am currently dealing with the Richter scale and I have this formula 200=0.02*10^1.5*6.4/0.02*10^1.5*x I just cannot get x,plz help
Sunday, May 15, 2016 by Maya

Math
How 12in patio brick will fit a 13ft long 7ft wide space
Sunday, May 15, 2016 by Mark

Math
You start a search for a buried object by marking the center of a filed as (0,0), with coordinates giving distances in yards. Coordinates to the north or east are positive and coordinates to the south or west are negative. You find nothing at (-12,8), so you try a likely-...
Sunday, May 15, 2016 by Please Help

Math
What's nine minus three divided by a third plus one
Sunday, May 15, 2016 by Joe

math
You want to cover a trapezoidal box with paper. You have a sheet of paper that is 1m by 500cm. What is the size box that can be made with minimal wastage? plz plz plz help me with this.. i don't understand how to do this
Sunday, May 15, 2016 by Emily

math
Five workers are supposed to paste expiration date on each can.A,who paste 30% of the cans,fail to paste the expiration date once in every 300cans.B,who paste 15%,fail to paste the expiration date once in every 250cans.C,who paste 35% ,fail to paste the expiration date once in...
Sunday, May 15, 2016 by koro

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