Thursday
September 3, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

MATH
writing an equation of a line given the y-intercept and another point. It say to write an equation of the line one point is on y0 and x is on -6. Thank you
Friday, July 10, 2015 by Mary Ann

math
can someone help me with this math question?Solve the system of equations given below. x+3z=12 -x-2y+z=10 3x+5y+2z=-7 I am really stumped. Please help! Thanks in advance!
Friday, July 10, 2015 by Victoria

Math
A recipe requires 3/4 cup of nuts for 1 batch of muffins. How many batches of muffins can be made using 7 1/2 cups of nuts?
Friday, July 10, 2015 by Rachel

st joan of arc
Math from a spot 60 ft from the base of a building the angle of elevation is 48 degrees and the of elevation of the top of the antenna is 56 degrees. What is the height of the building? What is the height of the antenna?
Friday, July 10, 2015 by sarah

Math
How do you write the square root of 3 in exponential form? or any other radical into exponential form
Friday, July 10, 2015 by Amanda

Math
Ralph's age is currently 3 years more than twice joe's age. But 3 years ago, ralph was was 4 times as old as Joe was the . How old will joe be in 10 years?
Friday, July 10, 2015 by Michelle

math-percentage
there are 792 workers in a factory. if the number of male workers is 20%less than that of female workers, then the number of male workers is? answer:352 i always get confused with the equation of this type of quesion. Thanks:)
Friday, July 10, 2015 by Zoe

Math
Suppose that a graphing calculator is programming to generate a random natural number between 1 and 10 inclusive . What is the probability that the number will be prime?
Friday, July 10, 2015 by Helen

obamoruf math
find the permeter of a parallelogram whose base is 6cm and side 5cm
Friday, July 10, 2015 by sarah

math
toilet .05 min to fill 1.5 gal to fill w mach 5.3 min 1.7 gal tub 6.3 min 20 gal sink 1.4 min 5.0 gal which has the fastest fill rate
Thursday, July 9, 2015 by bertha

math
triangular window 4feet tall. area 24. what is length of base?
Thursday, July 9, 2015 by bertha

Math
Dan ran six over five mile bob ran seven over eight mile how much father than Dan did bob ran?what was thier combined distance
Thursday, July 9, 2015 by Ashely

math
a nurse is draining fluid from a wound. fluid drains at 1/8oz per minute. how long will it take to drain 9/10 ounce of fluid
Thursday, July 9, 2015 by bertha

Math (Finite)
A test for a certain drug produces a false negative 5% of the time and a false positive 8% of the time. Suppose 12% of the employees at a certain company use the drug. If an employee at the company tests positive, what is the probability that he or she does not use the drug?
Thursday, July 9, 2015 by Stephanie

Math (Finite)
An election between two candidates is held in two districts. The first district, which has 60% of the voters, votes 40% for candidate 1 and 60% for candidate 2. The second district, with 40% of the voters, votes 60% for candidate 1 and 40% for candidate 2. Who wins?
Thursday, July 9, 2015 by Stephanie

Math (Finite)
Find the probability that among five persons, at least two were born on the same weekday.
Thursday, July 9, 2015 by Stephanie

math
If w whistles cost c cents, how many whistles can you get for d dollars?
Thursday, July 9, 2015 by timothy

math
On a certain legislative committe, 3/8 of the committee members are Republicans. If 2/3 of the members are men and 3/5 of the men are Democrats, what fraction of the members are Democratic women?
Thursday, July 9, 2015 by timothy

math
If 8% of c is equal to 12% of d, which of the following is equal to c+d?
Thursday, July 9, 2015 by timothy

math
Assuming segments from A to E and from B to D to be straight, find BC. If the shape looks like a cricket bowtie, the #s are AB=10, BC=3x-2, DE=6 CD=x+2 angles B(top left corner)& D(bottom right corner)are 90* angles
Thursday, July 9, 2015 by Ana

math
a jar contains 50 marbles that are the same size. There are 15 blue,8 yellow,and 27 red marbles.How many marbles are blue?
Thursday, July 9, 2015 by marie

math
find the product of the square root of 25 and each of the five answers. when the five answers are 12, 18, 8/3, 8/3, 18.2
Thursday, July 9, 2015 by Ana

Math
Irrational numbers are: 1-Not fractions 2-Non-terminating and non-repeating decimals 3-Radicals that do not simplify to whole numbers 4-All of the above.
Thursday, July 9, 2015 by Amanda

Math
The set of numbers which includes all positive numbers that are not decimals and which includes zero is the set of? Integers Natrual numbers Whole numbers Rational numbers
Thursday, July 9, 2015 by Amanda

math
there are 15 students including john and mary, in the art club of a school a committee of 3 men consists of chairman secretary and treasurer is selected from the club. if john and mary cannot be both selected how many different committees can be formed ? thank you:)
Thursday, July 9, 2015 by Zoe

math
list all the 3-digit number that fit these clues
Thursday, July 9, 2015 by mary

math
Marcia has 350 feet of fence.after fencing in a square region, she has 110 feet of fence left..What is the length of one side of the square?
Thursday, July 9, 2015 by riza

Math
The weight of a person and his luggage should not be greater than 150kg when travelling; (i) If the weight of the laggugge is W and that of a person is 70kg. write an inequality to represent this information (ii) Solf the inequality to find the range of the weight of the lagguge
Thursday, July 9, 2015 by Ellen

math
Given that triangles PQR~STU:triangle #1 sides 8,9,10 triangle #2 3,?,? a) What is the ratio of similitude of PQR~STU triangles? Express answer in fractional form. b) What is the ratio of the perimeter of PQR~STU triangles? Express answer in fractional form.
Thursday, July 9, 2015 by Ana

math
The lengths of the sides of a triangle are 13, 14 and 15 units. Find the shortest side of a similar triangle whose longest side is 21.
Thursday, July 9, 2015 by Ana

math
What should be added to (2/3+3/5) to get -2/15
Wednesday, July 8, 2015 by neha

math
Evaluate 6/7-2+-7/9+19/21
Wednesday, July 8, 2015 by neha

Algebra
I seriously need help on this math problem. I have tried to work it out myself but the answer is not coming out right. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x2 + 3x + 7.
Wednesday, July 8, 2015 by Angel

Math
there are 600 fruits in a supermarket. If .64 are oranges and the rest are apples how many more oranges than apples are there
Wednesday, July 8, 2015 by Brian

math (algebra)
In Professor Tuffguy's mathematics class, 36 students took the final exam. If the average passing grade was 78, the average failing grade was 60, and the class average was 71, how many of these 36 student passed the final?
Wednesday, July 8, 2015 by Samantha

Math
nPr=6720 and nCr=56, then the value if r is___?
Wednesday, July 8, 2015 by Helen

math (algebra)
x^32-1=(x^16+1)(x^8+1)(x^4+1)(x^2+1)(X+1​)(?) Find ? .. How do I do this?
Wednesday, July 8, 2015 by Samantha

math (algebra)
In a certain circle, the length of a radius is equal to the reciprocal of the length of a diameter. What is the area of this circle?
Wednesday, July 8, 2015 by Samantha

math (algebra)
How many different numbers stisfy the equation (x-2)^2(x-1)^3(x+1)^4(x+2)^5 = 0 I really need help. Thanks!
Wednesday, July 8, 2015 by Samantha

Math
Which statements is false? A. A decimal fraction has a multiple of 10 as a denominator. B. Every rational number can be associated with a point in the real number line. C. A terminating decimal cannot be expressed as a repeating decimal. D. The set of rational numbers includes...
Wednesday, July 8, 2015 by Kimberly

Math
A pencil has a cylindrical body with a cone-shaped end. The cylinder is 5 cm long with a radius of 0.29 cm. The cone has a slant height of 1 cm and has the same radius as the cylinder. Determine the surface area of the pencil to the nearest tenth of a square centimeter.
Wednesday, July 8, 2015 by Amanda

Math
A “gazing ball” is a spherical garden ornament with a mirrored surface that reflects its surroundings. The surface area of the ball is approximately 314 square inches. What is its volume to the nearest cubic inch?
Wednesday, July 8, 2015 by Amanda

Math
I want to buy a house in 5 years. I need to have a down payment of $50,000. How much do I need to have today in order to have the down payment, if I can earn 5%? I have tried to figure this out and have arrived at 39200.00
Wednesday, July 8, 2015 by Janice

math
Question is that if u win 5 dollars then 25 on the second day then 125 on third how much do u have on 11th day
Wednesday, July 8, 2015 by bloppers

math
A certain alloy contains 5.25% copper. How much copper is there in a piece weighing 200 pounds. A.1.05 pounds B.105 pounds C.10.5 pounds D.1050 pounds Would it be C 10.5 pounds
Wednesday, July 8, 2015 by tina

math
Theresa worked 9 hours on Monday and 7 on Wednesday. Her total pay was $116.00. What is her rate per hour. A.$7.25 B.$12.89 C.$8.29 D.$16.57 How do I go about finding the answer
Wednesday, July 8, 2015 by tina

math
Change the fraction 3/4 to a percent. A.34% B.63% C.75% D.113% is the answer A
Wednesday, July 8, 2015 by tina

math
Its matrix (3 0) p-p =(-2 0) (3 0) (2 4) value of p
Wednesday, July 8, 2015 by Anonymous

Math
if 89,88,45,9,33, selected from 1-90 next selections will be what numbers
Wednesday, July 8, 2015 by zakaria

math
If a car travels 340 miles on 20 gallons of gas, how far can it travel on 25 gallons of gas? A.255 B.272 C.425 D.500 would the answer be C
Wednesday, July 8, 2015 by tina

Math 157
Help please! Write an expression for the cost c, if a printer charges $1.75 for binding, plus 5 cents for p pages for copies of a community groups annual report Thanks I have a mental block with these problems.
Wednesday, July 8, 2015 by Bella

math
if 89,88,45,9,33, drawn in order,in certain lotto,from 1-90 numbers next drawn numbers will be what
Wednesday, July 8, 2015 by Lopa

math
If Joel earns $1,500 per month. If he spends $375 on rent each month, what percent of his income does he spend on rent? Is it 40%
Wednesday, July 8, 2015 by tina

math
You want to get a photo enlarged. The original was 3 inches wide and 5 inches long. The new photo is 20 inches long, how wide is the photo?
Wednesday, July 8, 2015 by rika

math
Which one of the following statements expresses a true proportion? A.2:3 = 3:2 B.14:6 = 28:18 C.3:5 = 12:20 D.42:7 = 6:2
Wednesday, July 8, 2015 by tina

math
If you're currently making $6.75 per hour and you're offered a new job that pays $7.47 per hour, how much more would you make per hour at the new job? A.$.28 B.$.72 C.$1.28 D.$1.72
Wednesday, July 8, 2015 by tina

math
In the equation x/35=7, what is the value of x? A.7 B.5 C.35 D.245
Wednesday, July 8, 2015 by tina

math
A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax? A.400 square feet B.40 Square feet C.800 Square feet D.80 Square feet
Wednesday, July 8, 2015 by tina

Math
There are 75 envelopes in a package. How many envelopes are in 7 packages? A.552 B.10r5 C.525 D.625
Wednesday, July 8, 2015 by tina

Math
Solve the following : 32 divided by 4 +4x8= A.96 B.32 C.42 D.40
Wednesday, July 8, 2015 by tina

math
During a paint sale, a hardware store sold 33 gallon of paint and 57 gallons of high- gloss paint. What is the ratio of gallons of high-gloss sold to the total gallons sold? A. 33:57 B. 33:90 C. 57:33 D. 57:90
Wednesday, July 8, 2015 by tina

math
change 34.55% to a decimal.
Wednesday, July 8, 2015 by tina

math
A proposed null hypothesis states that there is no difference in the water consumption of households of two districts. The sample mean difference is found to be 8.5 liters, and the standard deviation of the distribution of the difference in sample means is 4.5 liters. Which ...
Wednesday, July 8, 2015 by 54

math
Firewood is often sold by the cord. A cord of wood is a bundle measuring 4 feet by 4 feet by 8 feet. What is the volume of a cord of wood in cubic feet?
Wednesday, July 8, 2015 by tina

math
at a park 96 brown bag lunches were given out in thirty minutes if 29 bags remain and x represents the starting number of brown bag lunches which equation could be used to determine the value of x
Wednesday, July 8, 2015 by mariah

math
if 89,88,45,9,33, were results picked from 1-90 at certain school, what would be the next five numbers to be picked from 1-90.
Wednesday, July 8, 2015 by James kuma

math
The product of two rational numbers is -28/81 if one number is 14/ 27 find the other
Wednesday, July 8, 2015 by neha

math
how to write algebraic verification of 4 sectors of the circle
Wednesday, July 8, 2015 by samar

Math
If there are 6 tricycle wheels and the ratio of tricycles to the tricycle wheels is 1:3, how many tricycles are there?
Tuesday, July 7, 2015 by Jul

Math
Joe can type 11 words in 8 secs. at this rate, how many words can he type in two minutes ?
Tuesday, July 7, 2015 by Jul

Math
a ribbon is 40 inches long. we want to cut the ribbon into pieces, each pieces will be 2/3 of an inch. how many pieces will we have ?
Tuesday, July 7, 2015 by Jul

Math
From the top of the Metro Building, the angle of elevation of the top of the Gammapro Building is 24° and the angle of depression to the foot of the Gammapro Building is 56°. If the buildings are 45 m apart, determine the height of each building to the nearest meter.
Tuesday, July 7, 2015 by Amanda

Math
Two trees in a park are 14.80 meters apart. An observer, whose eye line is 1.80 m above the ground, is standing halfway between the trees. The angles of elevation of the tops of the trees from the observer’s eye line are 17° and 23°. Determine the height of each ...
Tuesday, July 7, 2015 by Amanda

Math
From the window of one building, Matt finds the angle of elevation of the top of a second building is 33° and the angle of depression to the bottom of the same building is 55°. The buildings are 25 meters apart. Find the height of the second building to the nearest ...
Tuesday, July 7, 2015 by Amanda

Math
Changing Shapes 1.)Suppose you are going to be designing a logo for a club at your school. To prepare for this product, draw a non-rectangular shape in the coordinate plane so that portions of the shape are in each of the four quadrants. Explain what would happen to your ...
Tuesday, July 7, 2015 by John Dosley

math
graphing a line through a given point with a given slope. graph a line with slope -1 passing through the point(1, -3) Thank you just do not understand sorry.
Tuesday, July 7, 2015 by Mary Ann

math
Sam is four years younger than Jo. But in five years' time Jo will be twice Sam's age now. How old are they now?
Tuesday, July 7, 2015 by bob

Math (Finite)
A calling card offers two methods of paying for a phone call. Method A charges $0.02 per minute but has a $0.6 connection fee. Method B charges $0.045 per minute but has no connection fee. Write the equations that show the total cost, y, of a call of x minutes for methods A ...
Tuesday, July 7, 2015 by Stephanie

Math
My hundreds digit is 4 less than my tens digit. My ten thousand digit is 6 greater than my hundreds digit. My thousands digit is 5 less than my ten thousands digit and my ones digit is 6 greater than my hundreds digit. If my tens digit is 7, Question: What number am i?
Tuesday, July 7, 2015 by Maitess

Math
My hundreds digit is 4 less than my tens my tens digit. My ten thousand digit is 6 greater than my hundreds digit. My thousands digit is 5 less than my ten thousands digit and my ones digit is 6 greater than my hundreds digit. If my tens digit is 7, what number am i?
Tuesday, July 7, 2015 by Maritess

Math statistics
A mountain search and rescue team received an average of 600 calls per year. Use the poisson dustribution to find the probability that on a randomly selected day, they will receive 1 or more calls.
Tuesday, July 7, 2015 by Lizzy

math
I am 5 digit greater 60000, but less than 70000.My ones digit is less than my 10000 digit on my other digit are the same.The sum of digit is 23.What is my number
Tuesday, July 7, 2015 by Kent Lloyd Abarquez

Math statistics
Ten percent of Americans adults are left-handed. A statistics class has 50 students in attendance. Find the standard deviation for the number of left-handed students in such classes of 50 students
Tuesday, July 7, 2015 by Lizzy

Math statistics
For a certain computer program a password must be exactly 5 characters long. The first character must be a mnber 0-8, the second, third and fourth character can either be one of the 26 letters or a number 0-5, the fifth character has to be exactly the same as the second ...
Tuesday, July 7, 2015 by Lizzy

Math Statistics
In the power ball lottery game, winning the jackpot requires that you select the correct five unique numbers between 1 and 58 inclusive (don't have to match the order) and, in a separate drawing, you must also select the correct single nber between 1 and 13 inclusive. Find...
Tuesday, July 7, 2015 by Lizzy

math
write 515% = 3/10 as a mixed number or fraction. answer in simplest terms
Monday, July 6, 2015 by anne

math
simply 375 over 200
Monday, July 6, 2015 by shirri

Math (Finite)
5. Let A = 1 4 2 3 and B = 3 -2 4 6 calculate the entry in the second row, second column in AB
Monday, July 6, 2015 by Stephanie

math
pi1:2x-y-4=0
Monday, July 6, 2015 by Dheeraj Kumar

math
What is the payoff for a loan with monthly payments of $359.69, after 26 payments have been made, contract was for 3yrs. at an annual interest rate of 9.2%? need to figure out payoff with 10 payments left, not working out for me
Monday, July 6, 2015 by crash

math
Find the weight of a 60 kg astronaut on earth?
Monday, July 6, 2015 by Aviwe

math
Kim has fraction 1 over 2 cup of almonds. She uses fraction 1 over 8 cup of almonds to make a batch of pancakes
Monday, July 6, 2015 by devin

Math
A reel of electric wire 150 metres long cut into two pieces. One is 40 metres shorter than twice the length of the other. How long is each piece.
Monday, July 6, 2015 by PHil

Math
Find the length of the curve r(t)=sqrt(2)ti + e^tj + e^-tk, 0<=t<=1 Please explain how it happened. Thank you
Monday, July 6, 2015 by Rick

math
The united ages of a man and his wife are six times to united ages of their children. Two years ago their united ages were ten times the united ages of their children and six years hence their ages will be three times the united ages of their children. How many children have ...
Monday, July 6, 2015 by omkar bisht

Math
1. JUGGLING NUMBERS From old newspapers cut out digits 0 to 9 and stick them in a creative manner. Make sure the digits are not too small. Juggle the digits to make the numbers described below. The challenge is you can use a digit only once in a number. 1) Make the smallest ...
Monday, July 6, 2015 by Hasitha

math
you invested $8000 between two accounts paying 7% and 9% annual interest, respectively. If the total interest earned for the year was $600 how much was invested at each rate?
Sunday, July 5, 2015 by Terry

Math
'Write down the equation of the line passing through 2,1 and perpendicular to 2x-4y-1=0 I tried figuring out what to do but I don't know how to.
Sunday, July 5, 2015 by fay.... pls help

math
The heights of American women between the ages of 18 and 24 are approximately normally distributed. The mean is 64.1 inches, and the standard deviation is 2.5 inches. What percentage of such women are over 5 feet 8 inches tall? z = (68 - 64.1)/2.5 = + 1.56 = P(z > 1.56) (...
Sunday, July 5, 2015 by Comet

Math
What is your expected value for a game whose probabilities and outcomes are given in the following table? Assume the wager is $1. Proability 0.2 = you win 2 times wager 0.3 = you win your wager 0.3 = you lose 2 times your wager 0.2 = you win nothing *Having trouble setting up ...
Sunday, July 5, 2015 by Comet

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