Thursday
October 8, 2015

# Homework Help: Math

## Recent Math Questions

math
use any method to simplify the complex fraction. y-(3y-5)/5/(14/10 + 7/2y) the fraction simplifies to ___.
Friday, July 24, 2015 by ashlyn

math
The intensity of I of light from a light bulb, measured in watts per square meter (w/m^2), varies inversely as the square of the distance d from the light bulb. Suppose I is 85 w/m^2 when the distance is 5m. Find the intensity when the distance from the light bulb is 2m away.
Friday, July 24, 2015 by destiny

math
Pairs of markings, a set distance apart, are made on highways so that the police can detect drivers exceeding the speed limit. Over a fixed distance, the speed R varies inversely with the time T. For one particular pair of markings, R is 35mph when T is 6 seconds. Find the ...
Friday, July 24, 2015 by kayla

math
HELP PLEASE! The distance d that an object falls is directly proportional to the square of the time of the fall,t. A person who is parachuting for the first time is told to wait 12 seconds before opening the parachute. If the person falls 64 feet in 2 seconds, find how far he ...
Friday, July 24, 2015 by kayla

Math
The weight W of an aluminum flatboat varies directly with the length L of the boat. If a 13-foot boat weighs 221 pounds, then what is the weight of the 5-foot boat The weight of a 5-foot boat is ____ pounds.
Friday, July 24, 2015 by Jayden

math
A jet flew at an average speed of 480 mph from Point X to Point Y. Because of head winds, the jet averaged only 440 mph on the return trip, and the return trip took 30 minutes longer. How many hours was the flight from Point Y to Point X? how far is it from Point X to Point Y...
Friday, July 24, 2015 by kenny

Math
in a recent year, a single person could expect to pay $4550 in income taxes on an adjusted gross income of$35,000. how much more tax should the person expect to pay if her adjusted gross income increased by $4000, knowing that this would not move her into the higher tax ... Friday, July 24, 2015 by Makaila Math The grades received on a test by twenty students were: 100, 55, 75, 80, 65, 85, 90, 80, 45, 40, 50, 85, 85, 80, 80, 70, 65, and 60. What is the average? Thursday, July 23, 2015 by Marshall Math quadratic function Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the ball at that ... Thursday, July 23, 2015 by Sandy math Sondra has a conical bird feeder with a circular top. The volume of the bird feeder is 153.86 cubic inches. The height of the feeder is 12 inches. What is radius of the top? Use 3.14 for mc019-1.jpg. Round the answer to the nearest tenth. Thursday, July 23, 2015 by daniella math The only real root of x^3 - 1999x^2+x-1999=0 is 1999. What is the only real root of (x-1)^3-1999(x-1)^2 +(x-1)-1999=0? A. 1 B. 1998 C. 1999 D. 2000 Thursday, July 23, 2015 by hila math In a certain right triangle, the lengths of the legs have a sum of 50 and a product of 282. What is the length of the hypothenuse? A. 44 B. 42 C. 40 D. 25squareroot2 Thursday, July 23, 2015 by hila math What is the largest power of 5 which divides the product of an the first 100 positive integers: 1 X 2 X 3 X ... X 98 X 99 X 100? A.5^2 B. 5^20 C. 5^24 D. 5^100 Thursday, July 23, 2015 by hila math The product 1.25 X 10^n is the cube of an integer when n= A. 1999 B. 2000 C. 2001 D. 2002 Thursday, July 23, 2015 by hila math If the coordinates of the vertices of a parallelogram are (-2,3), (3,1), (-1,4) and (-6,6), then one of its diagonals has a slope of A. -1 B. -2/5 C. 5/9 D. 1 Thursday, July 23, 2015 by hila math Our spring break lasted only a+b days, where a and b are positive integers and the square root of a+b equals the square root of 8. The break ends in how many days? A. 4 B. 6 C. 8 D. 16 No idea as to what to start... Thursday, July 23, 2015 by hila Math How do you factor this polynomial? y^6 + 3y^3 – 10 Thursday, July 23, 2015 by Amy math draw a square on the graph paper whose each side of the length 5 centimetre and then make partition of the square into 25 small squares as soon in figure 1.1 each square is small square have its height and length 1 centimetre Thursday, July 23, 2015 by rohit math ou were named District Manager of the Month at BeBop Records due to a hiring study you conducted. Your study showed that each of 30 salespersons that you supervise average$50,000 in sales each month. Your study also showed that for each new salesperson hired, the average ...
Thursday, July 23, 2015 by Jenn

basic math
The tank for a car holds 12 gallons. The gasoline gauge shows the tank is 14 full. How much gas is still in the tank?
Thursday, July 23, 2015 by Anonymous

Math grade 11 uni
Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the ball at that ...
Thursday, July 23, 2015 by Sandy

math
find the area of a triangle whose altitude is (5y-2)m and the base is (4y-7)m ? Thank you!! :))
Thursday, July 23, 2015 by Camz

Math grade 11 u
Jose bautista hits a baseball that travels for 142m before it lands. The flight of the ball can be modelled by a quadratic function in which x is the Horizontal distance the ball has travelled away from jose, and h(x) is the height Vertical distance of the ball at that ...
Wednesday, July 22, 2015 by Sandy

Math
What is the greatest common factor that can be removed from: 15x^35 - 18x^28 + 27x^12?
Wednesday, July 22, 2015 by Amy

Math
6x^2 - 7x - 5 is factored to (3x - 5)(2x + b). What is the value of b?
Wednesday, July 22, 2015 by Amy

math
A pair of boots has an original price of $95. They are on sale for 35 percent off. What number can you multiply$95 by to equal the discounted price of $61.75? Wednesday, July 22, 2015 by Lenord math A mountain bike is priced at$413. If the sales tax is 6.5 percent, what is the cost to purchase the mountain bike? Round to the nearest cent if necessary.
Wednesday, July 22, 2015 by Lenord

math
The Bishop family celebrated a birthday by dining out at a local restaurant. Their bill was $97.45. Mr. Bishop would like to leave a 18 percent tip at the table for the server. What is the total amount that the family will pay for the dinner? Round to the nearest cent if ... Wednesday, July 22, 2015 by Lenord math Raymond bought a used truck for$18,800. If the sales tax in his state is 7 percent, what was the final price for his car?
Wednesday, July 22, 2015 by Lenord

math
Paige works at a department store and has a commission rate of 3 percent. Her sales for the quarter were $4,596. If she earns$50 per day and she worked 30 days in the quarter, what is the total amount she earned?
Wednesday, July 22, 2015 by Lenord

Math
There were 256 people at a fundraiser. When the event was over, half of the people who remained left every 5 minutes. How long after the event ended did the last person leave?
Wednesday, July 22, 2015 by Zero

math
In a recent Math Duel, my team began by graphing 51x+24+75. If our opponents graphed a line parallel to ours, they might have graphed A. 17x+16y=25 B. 17x+8y=50 C. 34x+8y+50 D. 34x+16y=50
Wednesday, July 22, 2015 by timothy

math
If the product of 1999 real numbers is -1998, at least how many of these 1999 real numbers must be negative? A. none B. 1 C. 1997 D. 1998
Wednesday, July 22, 2015 by timothy

math
If x and y are reciprocals of each other, then their product always equals A. 1 B. x^2 C. y^2 D. 1/x^2
Wednesday, July 22, 2015 by timothy

math
The number ? could be the sum of three consecutive integers. A. 0 B. 2 C. 4 D. 8
Wednesday, July 22, 2015 by timothy

math
Points $D$, $E$, and $F$ are the midpoints of sides $\overline{BC}$, $\overline{CA}$, and $\overline{AB}$, respectively, of $\triangle ABC$. Points $X$, $Y$, and $Z$ are the midpoints of $\overline{EF}$, $\overline{FD}$, and $\overline{DE}$, respectively. If the area of $\... Wednesday, July 22, 2015 by animus Math Check Is the following statement true: (x^4+6x^2+9)=x^2+3 Wednesday, July 22, 2015 by Devron Urgent math Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express the quotient P(x)/D(x) in the form P(x) D(x) = Q(x) + R(x) D(x) . P(x) = 10x3 + x2 − 21x + 9, D(x) = 5x − 7 P(x) D(x) = 2x2+3x Incorrect: Your answer is ... Wednesday, July 22, 2015 by Melany Urgent math R(x) = −x5 + 4x3 − 3x (a) Describe the end behavior of the polynomial function. End behavior: y → rises to the right Incorrect: Your answer is incorrect. as x → ∞ y → falls to the left Incorrect: Your answer is incorrect. as x → −... Wednesday, July 22, 2015 by Melany math Missi designed a stained glass window and made a scale drawing using centimeters as the unit of measurement. She originally planned for the length of the window to be 44 in. but decided to change it to 48 in. If the length of the window in her scale drawing is 4 cm,what is the... Wednesday, July 22, 2015 by Lenord math Missi designed a stained glass window and made a scale drawing using centimeters as the unit of measurement. She originally planned for the length of the window to be 44 in. but decided to change it to 48 in. If the length of the window in her scale drawing is 4 cm, which ... Wednesday, July 22, 2015 by Lenord math Yuron is sketching a scale drawing of a famous painting. The painting is 54 inches wide and 72 inches long. He used a scale factor of 2/3 to make his sketch. How many inches wide is Yuron’s sketch? Wednesday, July 22, 2015 by Lenord Math Two towns A and B are to get their water supply from the same pumping station to be located on the bank of a straight river that is 15 km from town A and 10 km from town B. If the points on the river nearest to A and B are 20 km apart and A and B are on the same side of the ... Wednesday, July 22, 2015 by Shirley math give four equal fractions of 6/11 Wednesday, July 22, 2015 by lorein math A box contains 5 red bowls, 6 yellow bowls and 3 white bowls. If 4 bowls are randomly drawn from the box at the same time, (a)find the probability that exactly 2 red bowls are drawn; (b)find the probability that at least 2 red bowls are drawn. My work: (a) (5/14)^2(6/14)(3/14... Wednesday, July 22, 2015 by Charles math use sigma notation to write the maclaurin series for the function 1/(1+x) Wednesday, July 22, 2015 by fatmah math use sigma notation to write the maclaurin series for the function ln(1+x) Wednesday, July 22, 2015 by fatmah Urgent math Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express P in the form P(x) = D(x) · Q(x) + R(x). P(x) = 4x3 + 5x + 9, D(x) = 2x + 1 P(x) =(2x + 1)*()+ Wednesday, July 22, 2015 by Melany Urgent math Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express the quotient P(x)/D(x) in the form P(x) D(x) = Q(x) + R(x) D(x) . P(x) = 10x3 + x2 − 21x + 9, D(x) = 5x − 7 p(x)/d(x)= Wednesday, July 22, 2015 by Melany Urgent math A quadratic function is given. f(x) = x2 − 8x + 8 (a) Express the quadratic function in standard form. Wednesday, July 22, 2015 by Melany Math z2(pi)rh=2(0.064)2(pi)r + 0.064(2*pi*h) z2*pi*r^2= 0.064(2*pi*r) pi*r^2h=1567.8 Find z,r,h Wednesday, July 22, 2015 by Joe Urgent math For his services, a private investigator requires a$450 retention fee plus $95 per hour. Let x represent the number of hours the investigator spends working on a case. (a) Find a function f that models the investigator's fee as a function of x find f(x) find f^-1(x) find ... Wednesday, July 22, 2015 by miriam Math If a recipe calls for 2/3 cups of sugar but I only want to make 1/4 of the recipe, how much sugar do I need? Wednesday, July 22, 2015 by Sam Finite Math Can someone please help me. I am not sure to work the following matrices. If A^4 = -3 4 -4 5 and A^5= 4 -5 5 -6 What is A? Can you show me how you got this? Thank you so much ;) Tuesday, July 21, 2015 by Katy Math A muffin recipe calls for 2 1/2 cups of flour for every 2/3 cups of sugar. How many cups of flour should be used when 4 cups of sugar are used? Tuesday, July 21, 2015 by Zero Math Find 3 consecutive positive integers whose product is 5 more than the cube of the middle number. Tried x*(x+1)*(x+2) = (x+1)^3 + 5, but that solves to x = -6 which isn't positive. Tuesday, July 21, 2015 by Jim Math A locker combination has three nonzero digits, with no repeated digits. If the first digit is a 2, what is the probability the second digit is also even? Tuesday, July 21, 2015 by Help369 Math Hannah rolls two number cubes. What is the probability that both numbers are greater than 3? Tuesday, July 21, 2015 by Help369 math If n is a positive integer, n! is the product of the first n positive integers. For example, 4! = 4 x 3 x 2 x 1 =24. If u and v are positive integers and u!=v! x 53, then v could equal A. 6 B. 8 C. 56 D. 57 Tuesday, July 21, 2015 by Ryan math If the lengths of the sides of a rectangle are integers, and if one side is 2 more than another, then the perimeter could equal A. 1998 B. 1999 C. 2000 D. 2002 I started this, but I'm not sure what they're asking and I don't know how to solve it. Tuesday, July 21, 2015 by Ryan math Of the following, which must be true whenever x^1998 = y^1998? A. x^999=y^999 B. x^1997=y^1997 C. x^1999=y^1999 D. x^2000=y^1000 I tried plugging in 2 for x and y, but the calculator said overflow... Tuesday, July 21, 2015 by Ryan math a 12 cm by 16 cm picture is mounted with border of uniform width on a rectangular frame. if the total area of the border is 288 cm2, what is the length of the side of the frame? Tuesday, July 21, 2015 by nicole Math The difference between two numbers is 45. Three times the larger number less five times the smaller number equals 75. What are the two numbers? Tuesday, July 21, 2015 by serena Accounting,business studies,economics,math literacy What kind of job can i get ? Tuesday, July 21, 2015 by Sinethemba MATH- URGENT! the athletic department ordered a total of 29 basketballs and footballs for$1000. if the basketballs cost $30 each and the footballs cost$40 each, how many footballs were purchased?
Tuesday, July 21, 2015 by candie

math
the athletic department ordered a total of 29 basketballs and footballs for $1000. if the basketballs cost$30 each and the footballs cost $40 each, how many footballs were purchased? Tuesday, July 21, 2015 by candie math 2. Suppose you obtain a$3,000 T-note with a 3% annual rate, paid quarterly, with maturity in 5 years. How much interest will you earn?
Tuesday, July 21, 2015 by Pat

math
find the linear differential equation that has y=5-x+2e^xsin3x as a particular solution
Tuesday, July 21, 2015 by toby

URGENT MATH!!
Q1: Robert can paint a room in 12 hours. Dennis and Vince can paint the room in 10 hours & 9 hours respectively. If Dennis and Vince work together for 2 hours, How long will it take Robert to finish the job? I think it's 12 (because it says it, but I think the question was...
Tuesday, July 21, 2015 by Victoria

statistics in math
what is an confidence interval?
Monday, July 20, 2015 by Annie George

Math
A piece of rectangular cloth has an area of 40 square feet. Its length is 3 feet longer than its width. If the width of the rectangular cloth is represented as x, which of the following represents the length?
Monday, July 20, 2015 by kate

Math
what is an confidence interval?
Monday, July 20, 2015 by Annie George

math
At the rate of $.80 cents per$100, how much does it cost to insure a car against fire and theft for $1650 Monday, July 20, 2015 by Anonymous math A rectangular rug is 12.5 feet long and 10 feet wide. The rug needs to be reduced by a factor of es026-1.jpg to be placed near a door. What is the area of the reduced rug in square feet? Monday, July 20, 2015 by Lenord math The scale model of a rectangular patio will be enlarged by a scale factor of 2.5 to create the actual patio. The actual patio will be 15 feet by 20 feet. Which is the area of the scale model? 48 square feet 60 square feet 120 square feet 300 square feet Monday, July 20, 2015 by Luke math A piece of carpet is 8 feet wide and 12 feet long. The carpet needs to be reduced by a scale factor so that the reduced carpet is 2 feet wide. What is the area of the reduced carpet? Monday, July 20, 2015 by nazir math A scale model of a rectangular building lot measures 7 feet by 5 feet. If the actual house will be built using a scale factor of 12, what is the area of the actual building lot? Monday, July 20, 2015 by Jalen math A room is 12 feet long and 10.5 feet wide. A scale model of the room is 3.5 feet wide. What is the area of the scale model? 10.3 square feet 14 square feet 36 square feet 122.5 square feet Monday, July 20, 2015 by Jordan math The area of the scale model of a playground is 6 square yards. The scale model is enlarged by a scale factor of 3 to create the actual playground. What is the area of the actual playground? 18 square yards 54 square yards 108 square yards 324 square yards I got the answer of ... Monday, July 20, 2015 by Keon math The area of the scale model of a playground is 6 square yards. The scale model is enlarged by a scale factor of 3 to create the actual playground. What is the area of the actual playground? 18 square yards 54 square yards 108 square yards 324 square yards I got the answer of ... Monday, July 20, 2015 by DeMarcus Smith math The area of the scale model of a playground is 6 square yards. The scale model is enlarged by a scale factor of 3 to create the actual playground. What is the area of the actual playground? 18 square yards 54 square yards 108 square yards 324 square yards I got the answer of ... Monday, July 20, 2015 by Keon math I'm trying to do number forms... can someone help me with the question what's the order form least to greatest -2,2.25,-2.75 Monday, July 20, 2015 by nazir math The area of the scale model of a playground is 6 square yards. The scale model is enlarged by a scale factor of 3 to create the actual playground. What is the area of the actual playground? 18 square yards 54 square yards 108 square yards 324 square yards Monday, July 20, 2015 by DeMarcus Smith math The scale model of a rectangular patio will be enlarged by a scale factor of 2.5 to create the actual patio. The actual patio will be 15 feet by 20 feet. Which is the area of the scale model? 48 square feet 60 square feet 120 square feet 300 square feet Monday, July 20, 2015 by DeMarcus Smith math The scale model of a rectangular garden is 1.5 ft by 4 ft. The scale model is enlarged by a scale factor of 7 to create the actual garden. What is the area of the actual garden? 6 42 252 294 Monday, July 20, 2015 by DeMarcus Smith math lictracy,life science,geography,tourism,isizulu,english,life orantation. please tell me the job i can do while im study that subjects? Monday, July 20, 2015 by thembekile zulu Math I am a five-digit number. My ten thousand digit is the highest odd number as well as my tens and ones. My thousands and hundreds digits mean nothing. What number i am? Monday, July 20, 2015 by Maritess Math My thousand digit is an even number which is two more than my hundreds digit. My hundreds digit is three more than my tens digit which is three more than zero, my ones digit. My ten thousands digit is one more than my ones digit. What number am I? my ans 42473 Monday, July 20, 2015 by Maritess Math My tens digit is the lowest even number. My hundreds digit is six more than my tens digit and my ones digit is one more than my tens digit. My thousand digit is the second odd number. my ans: 2601 Monday, July 20, 2015 by Maritess Math My hundreds digit is the last odd number. Five less than my hundreds digit is my ones and my tens digit is two more than my ones digit. My thousands digit is three less than my hundreds digit. my ans: 6964 Monday, July 20, 2015 by Maritess Math My hundreds digit means nothing. Six more than my hundreds digit is my thousands and one less than my thousands is my ten thousands. My tens digit is four more than my hundreds and ones digit is five more than my tens digit. my ans: 5,6049 Monday, July 20, 2015 by Maritess Math - linear programming 1)An electronic repair shop has 5 vacum cleaners, 12 tv sets, and 18 vcrs to be repaired. The store employs two part time repairmen. One repairman can repair at least one vacum cleaner, three tv sets and three vcrs in 1 week. While the second repairman can repair at least one ... Monday, July 20, 2015 by Astro math A baseball pitcher can throw a base ball at 150 ft/s. Can this pitcher hit the 200-ft ceiling of its game dome, if he was capable of giving a baseball an upward velocity of 85 ft/s, from a height of 7 ft? (Assume the ball is traveling as a free-falling body, and g = 32 ft/s2... Sunday, July 19, 2015 by Josh MATH 48+(-2)3 but the 3 is an exponent Sunday, July 19, 2015 by MED math If an equithagorean triangle is an equilateral triangle in which the sum of the cubes of two sides is equal to the square of the third side, what is the perimeter of an equithagorean triangle? A. 0.5 B. 1.5 C. 4.5 D. 6 Sunday, July 19, 2015 by Larry math A model rocket is launched off the top of a table. The height of the rocket is given by the function, h(t) = - 4.9t2 + 9.5t + 1.2 where h(t) is the height in metres and t is the time in seconds. How long will it take for the rocket to reach the ground? Sunday, July 19, 2015 by algebra hard Math (Finite) In how many ways can a committee of 7 people be chosen from 15 married couples if 2 couples must be on the committee? Sunday, July 19, 2015 by Stephanie math if tan=15/8 and cos negative then what is the value of [sin(-a)-cosa]/[tan(-a)+sec(-a)] Sunday, July 19, 2015 by Anwar math Determine the trigonometric functions (sin θ, cos θ, tan θ ) of the angles (in standard positive) whose terminal side passes through the given point (x, y)=(1.2, 0.5). Give answers in exact form. Sunday, July 19, 2015 by ashmita Math Farmer Brown planted corn and wheat on his 1200 acres of land. The cost of planting and harvesting corn is$275.00 per acre. The cost of planting and harvesting wheat is $125.00 per acre. If Farmer Brown's total cost was$244,500, how many acres of corn did he plant?
Sunday, July 19, 2015 by Janice

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