Saturday
August 29, 2015

# Homework Help: Math

## Recent Math Questions

math
The teacher of a mathematics class has written up the final exam, but wants the questions to be random for each student. There are 28 students in the class, and the test has 100 questions. Each question has four possible answers. a. After reading carefully reading the scenario...
Wednesday, July 29, 2015 by lana

math
Eric is planning a 7-day resort vacation. He will play golf on four mornings. He also wants to play tennis but can only play tennis on days he does not play croquet. He will play croquet on any day immediately following a day that he plays golf. What is the greatest number of ...
Wednesday, July 29, 2015 by Jackson

Math
the length of a rectangle is three times of its width. if the length of the diagonal is 8 root 10cm then the area of the parameter of the rectangle ?
Wednesday, July 29, 2015 by Ashu

Math
SuperNote Doodle Data
Wednesday, July 29, 2015 by Lala

rd. math
Pl find out hcf using division method 180,252,576
Wednesday, July 29, 2015 by Raj

Math
Drew is twice as old as his sister joy.The quotient of their ages five years ago is seven less than Joy's present age. Find out how old they are at present.
Wednesday, July 29, 2015 by Alex

math
Carlos joins a DVD club.The membership cost$49 per year. Each DVD cost$4. supose carlos buys 28DVDs this year . How much money will he make?
Wednesday, July 29, 2015 by kayla

Math
Mr Lee spent 1/12 of his money on a.belt and 1/4 of it on books. He had $240 left. How much did he spend on the books? Wednesday, July 29, 2015 by Angeline Math I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model the growth of a ... Tuesday, July 28, 2015 by PLEASE HELPP Math I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model the growth of a ... Tuesday, July 28, 2015 by Yoyo Math The roots of x^2-999999x-9999=0 and ? are additive intergers A. x^2+999999x-9999=0 B. x^2-999999x+9999=0 C. x^2+999999x+9999=0 D. x^2-9999x-999999=0 Tuesday, July 28, 2015 by ben math There are ? different ways to represent the square root of 1000000 in the form a square root b, where a and b are positive integers. One way is 1 square root 1000000 A. 2 B. 4 C. 12 D. 16 About this question, i have no idea what they are trying to ask.... Tuesday, July 28, 2015 by Josh math The roots of x^2-999999x-9999=0 and ? are additive intergers A. x^2+999999x-9999=0 B. x^2-999999x+9999=0 C. x^2+999999x+9999=0 D. x^2-9999x-999999=0 Tuesday, July 28, 2015 by Ben math When n= ?, one term in the expansion of (2x^2+3x+2)^n is 1024. A. 4 B. 8 C. 9 D. 10 Tuesday, July 28, 2015 by Ben math 1-2-3-4+...+1997-1998+1999-2000= A) -2000 B) -1000 C) -1 D) 0 Tuesday, July 28, 2015 by Murr math If a, b, c, d are 4 different numbers, then the line joining R(-a,b) and S(-c,-d) has the same slope as the line joining T(a,-d) and A) (c,b) B) (-c,b) C) (c,-b) D) (-c,-b) Tuesday, July 28, 2015 by Murr Math how would you solve this with substitution? -3x – 2y = 16 -x + y = -8 Tuesday, July 28, 2015 by Alessandra Math The best free throw shooter on a basketball team has a 60% chance of making the 1st shot when shooting 2 free throws. If he makes the 1st shot, he has an 80% chance of making the 2nd. If he misses the 1st shot, he only has a 40% chance of making the 2nd shot. What are the ... Tuesday, July 28, 2015 by Gina math How do you find the area and perimeter of your room floor? Tuesday, July 28, 2015 by lily math please solve x- 11/21= -10/21 Tuesday, July 28, 2015 by Anonymous Math I tried so hard for the question below and I couldn't figure it out. Please show some working out. Thanks 10 owners of pedigree dogs will enter the arena to parade their dogs by walking around a circular track. 3 dogs cannot get along together but their is no problem if ... Tuesday, July 28, 2015 by G Math A package of 12 hex bolts and 10 anchor bolts weighs 7 pounds. A second package of 5 hex bolts and 15 anchor bolts weighs 4 pounds. A single hex bolt weighs ___________pounds, rounded to one decimal place. Monday, July 27, 2015 by Amy Math Two acid solutions are to be mixed together.  Solution A is 30% acid by volume.  Solution B is 70% acid by volume. The 800 mL mixture is 54% acid by volume. The amount of Solution A, rounded to the nearest milliliter, is ____________mL. Monday, July 27, 2015 by Amy math I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model the growth of a ... Monday, July 27, 2015 by sarah math The dimensions of a box are 9 by 16 by radical 25. Its volume is a. 60 b. 3600 c. √(50) d. √(60) please explain Monday, July 27, 2015 by Anonymous math The square of a certain whole number N is N squared.If 60 is a factor of N squared ,its possible that xis not a factor of N squared. Monday, July 27, 2015 by Anonymous Math Suppose the stock of Microsoft increases in value by$5 per share. If all other Dow stock prices remain unchanged, how does this affect the DJIA? a) 37.80 points up b) 30.24 points up c) 22.68 points up
Monday, July 27, 2015 by Jessica

Math
Suppose the rate of inflation this year is 4.5%. What is the percentage decrease in the buying power of a dollar? a) 4.3% b) 4.7% c) None of the above.
Monday, July 27, 2015 by Jessica

Math
1. Suppose the buying power of the dollar decreases by 6.7% this year. What is the rate of inflation this year? a) 7.6% b) 7.2% c) None of the above.
Monday, July 27, 2015 by Jessica

math
The product of 2000 negative numbers could equal. A. -200 B. -1 C. 0 D. pi
Monday, July 27, 2015 by hila

math
The product of the digits of 2000 is 0. How many integers y, 2000<y<2100, also have 0 as the product of their digits? A. 19 B. 20 C. 99 D. 100
Monday, July 27, 2015 by hila

Math
There's a question I've been having difficulty solving, and I would really appreciate if you can show he steps to how I can achieve the answer. QUESTION: The numbers 1, 4, 10, 20, and 35 are called tetrahedral numbers because they are related to a four sided shape ...
Monday, July 27, 2015 by Sarah

Math
One solution contains 25% as much water as alcohol and another solution contains 5 times as much water as alcohol. How many gallons of each solution must be mixed in order to obtain 7 gallons of the new solution which contains as much water as alcohol? Please help. I don't...
Monday, July 27, 2015 by Ben

Math
The amounts by weight of gold, silver and lead in three alloys of these metals are in the ratio 1:5:3 in the first alloy, 2:3:4 in the second and 5:2:2 in the third. How many kg of the first alloy must be used to obtain 10kg of an alloy containing equal amounts by weight of ...
Monday, July 27, 2015 by Anne B.

math
In a class election,the votes of the two candidates were in the ratio 4:5. If there were 45 students in the class, how many did each get?
Monday, July 27, 2015 by jas

math
In a class election,the votes of the two candidates were in the ratio 4:5. If there were 45 students in the class, how many did each get?
Monday, July 27, 2015 by jas

math
how to construct a quadrilateral MATH where MT bisects M. AH is perpendicular bisector of MT. M is 60 degrees. A is 120 degrees. MH is 8cm
Monday, July 27, 2015 by Roch

math
construct a triangle ABC such that AB =BC=4.7 cm and <B=75 DEGREE .MEASURE <A AND <C
Monday, July 27, 2015 by SUNITA

Math
From the top of a tree the angle of depression of a boat is 30degree if the height of a tree is 36m above the sea level calculate the horizontal distance of the boat from the bottom of a tree?
Monday, July 27, 2015 by Charito

math
Evaluate(2+j4)*(-3-j4) and express in polar coordinate fform
Monday, July 27, 2015 by saurabh

math
Solve (1) TTX=2 (2) 3x+2=5x+7-2x (3) 6x+2-4x=5+2x-3
Sunday, July 26, 2015 by nakul

math
Equations solve by matrix method (1) x+y+z=3 (2) x+2y+3z=4 (3) 2x+4y+9z=6
Sunday, July 26, 2015 by nakul

math
Equations solve by matrix method (1) x-y+3z=2 (2) 2x+y+2z=2 (3) -2x-2y+z=3
Sunday, July 26, 2015 by nakul

math
solve -8/15 a = 9/10
Sunday, July 26, 2015 by Carter

math
solve 7/10 d = 21/20
Sunday, July 26, 2015 by jalen

math- partial fractions
how do you i do the partial fraction for 1/(s^2)(s^2 +2s +3)
Sunday, July 26, 2015 by Anonymous

Math
I am doing estimating Standard deviation of grouped data. I have done all the sum freg 60/ midpoint 2580/ x bar is 43 for all/ and total with x bar is 10260. Can you explain how to get the variance and sq root from these. I know that you have to fregx(mid-xbar)square2 and ...
Sunday, July 26, 2015 by Mary Ann

Math
What is the greatest prime you must consider to test whether 7356 is prime?
Sunday, July 26, 2015 by Kim

Math 156
What is the greatest prime you must consider to test whether 7356 is prime? Thanks for the help.
Sunday, July 26, 2015 by Bella

Math Functions
Write two equations to represent the same exponential function with a y-intercept of 5 and an asymptote at y=3 . Investigate whether other exponential functions have the same properties. Use the transformations to explain your observations.
Sunday, July 26, 2015 by Jacob

math
How many license plates can be made if each should have 3 letters of the English alphabet with no letter repeated ? what will be the answer if the letters can be repeated?
Sunday, July 26, 2015 by nakul

MAth 109
The formula d= square root of 3h/2 models the distance, d, in miles, that a person h feet high can see to the horizon. If the pool deck on a cruise ship is 80' above the water, how far can passengers on the pool deck see? Write the answer in simplified radical form. Then ...
Sunday, July 26, 2015 by Zsa Zsa

Math
A manufacturing company is thinking of launching a new product. The company expects to sell $950,000 of the new product in the first year and$1,500,000 each year thereafter. Direct costs including labor and materials will be 45% of sales. Indirect incremental costs are ...
Sunday, July 26, 2015 by Priscilla

ssc..math
A tree 30 feet tall casts a shadow 7 feet at the same time that a flagpole casts a shadow 5 feet .Find the height of the flagpole .
Sunday, July 26, 2015 by jonalyn

Math
What is 2 plus 1
Sunday, July 26, 2015 by Adam tan

math
Mercury is a metal, which is liquid at room temperature. Its melting point of alcohol is 39 Celsius the freezing point of alcohol is-114 Celsius. how much warmer is the melting point of mercury than the freezing point of alcohol?
Sunday, July 26, 2015 by Raina

Math
Show that the limit as h approaches 0 of (e^h-1 ) all over h = ln e = 1 using at least two numerical examples.
Sunday, July 26, 2015 by Jonathan

Math
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $14 monthly fee and charges an additional$0.20 for each minute of calls. The second plan has an $18 monthly fee and charges an additional$0.15 for each minute of ...
Saturday, July 25, 2015 by Morgan

math
How many hours of total sleep are there for the first animal in the table? please help me
Saturday, July 25, 2015 by Max

Math
There's a question I've been having difficulty solving, and I would really appreciate it if you can explain to me how I can achieve the answer. question:an above ground swimming pool in the shape of a cylinder, with diameter 5m, is filled at a constant rate to a depth ...
Saturday, July 25, 2015 by Sarah

math
A triangle as a perimeter of 53 cm. The shortest side of the triangle is 2 cm more than 1/3 of the longest side and the other side is 5 cm less than the longer side. Find the dimensions.
Saturday, July 25, 2015 by Raina

Math
How do you multiply 2 square roots?
Saturday, July 25, 2015 by Sarah

Math
A parking lot contains motorcycles (2 wheels) and cars (4 wheels). There are 35 vehicles and 114 wheels. How many motorcycles and cars are ￼￼there?
Saturday, July 25, 2015 by Amy

stats
The average GRE score for math in a sample of students is 490. When you create a 95% confidence interval around this average, the lower limit is 260. What is the upper limit for this 95% confidence interval?
Saturday, July 25, 2015 by Anonymous

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

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

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

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