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March 3, 2015

Homework Help: Math

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Recent Math Questions

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Math
In a class of students, 80 spoke English, 110 spoke spanish, 100 spoke french, 50 spoke english & spanish, 30 spoke english & french, 20 spoke french & spanish, 10 spoke english & frnech, but no spanish. How many spoke spanish & french, but not english? The answer is 0. I was ...
Monday, February 2, 2015 at 1:23am

math
Thom has a scale model of his car . The scale is 1:12 . If the actual car has 16-inch weeks,what size are the wheels on the scale model?
Sunday, February 1, 2015 at 9:55pm

Math
.85km/s=m/min
Sunday, February 1, 2015 at 9:52pm

4th grade math
A park guide plans the swan boat rides for 40 people. Each boat can carry 6 people at a time. What is the best way to interpret the remainder of 40/6 in this situation so that everyone gets a ride? How do I show the work?
Sunday, February 1, 2015 at 9:40pm

4th grade math
There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty? We added and got 189 then divided by 3. But it doesn't look correct. How do we show the work?
Sunday, February 1, 2015 at 9:24pm

4th grade math
Jake wants to distribute 543 marbles equally among 7 of his friends. In what place is the first digit of the quotient?
Sunday, February 1, 2015 at 9:17pm

Math
Will, Micah, and Sue went to dinner. Will paid 1/3 of the dinner bill. Micah and Sue paid in the ratio 2:5. If Sue paid $6 more than will, how much di the dinner cost?
Sunday, February 1, 2015 at 8:43pm

Algebra
I am a parent trying help my son, who has trouble understanding and remembering how to work his math. I never had this math, so it is hard for me to explain it. If I see it worked out. Then I can explain it, (I, Think) here is the problems. A ball is tossed into the air and it...
Sunday, February 1, 2015 at 8:19pm

4th grade math
The school choir has 48 singers with high voices, 53 singers with middle voices, and 39 singers with low voices. the singers stand in 4 equal rows at concerts. How many singers are in each row? How do I show my work for this?
Sunday, February 1, 2015 at 8:07pm

4th grade math
Amanda and her four sisters divided 1,021 stickers equally. About how many stickers would each girl receive? How do I show my work?
Sunday, February 1, 2015 at 8:02pm

Math
I am a parent trying help my son, who has trouble understanding and remembering how to work his math. I never had this math, so it is hard for me to explain it. If I see it worked out. Then I can explain it, (I Think) here is the problems. A ball is tossed into the air and it ...
Sunday, February 1, 2015 at 7:47pm

Math
Harrison says that to convert a mixed number to a fraction greater than 1, he thinks of it this way: 4 2/5= 5/5 + 5/5 + 5/5 + 5/5 + 2/5 = 22/5. Does this strategy work? Explain
Sunday, February 1, 2015 at 7:26pm

Math
A jug holds 3.75 liters of water. How many millimeters can fit into the bottle
Sunday, February 1, 2015 at 7:15pm

Math
A hardware store will deliver up to 6 items for a $25 delivery charge. There is a charge of $4 for each additional item to be delivered. a. Write a piecewise function for the cost of having x items delivered. b. What is the charge to have 14 items delivered?
Sunday, February 1, 2015 at 7:14pm

Math
I am a parent and need help with this problem so I can show my daughter how to complete. A recipe calls for 8 cups of flour. The amount of flour is 10 cups less than twice the amount of milk. Write and solve an equation to find the amount of milk in the recipe. I really only ...
Sunday, February 1, 2015 at 6:55pm

Math
Carlos has 32 iris bulbs and 40 tulip bulbs to plant. He wants to plant them in rows with one type of bulb in each row. He wants all of the rows to have the same number of bulbs. The greatest number of bulbs he can plant in each row is?
Sunday, February 1, 2015 at 4:58pm

Math
An airplane in Australia is flying at a constant altitude of 2 miles and a constant speed of 600 miles per hour on a straight course that will take it directly over a kangaroo on the ground. How fast is the angle of elevation of the kangaroo's line of sight increasing when...
Sunday, February 1, 2015 at 3:25pm

math
1/4 of the T-shirts are pink, 1/2 T-shirt are white what remainder of the T-shirt is purple
Sunday, February 1, 2015 at 3:01pm

Math 20-1
The most convenient test point to use to determine if the points in a region defined by y<1.4x+0.6 satisfy the inequality is
Sunday, February 1, 2015 at 2:46pm

Math 20-1
The length of a rectangle is 5 cm more than its width. What are the possible dimensions of the rectangle if the area must be at least 84 cm^2 ? (2 marks)
Sunday, February 1, 2015 at 2:20pm

Math problems
a farmer plants .6 0f a field with peanuts. the field is 5.6 acres in size. how many acres are planted with peanuts
Sunday, February 1, 2015 at 2:07pm

math
The measures of two complementary angles are in the ratio 1:4. What are the degree measures of the two angles? 18° and 72° 22.5° and 67.5° 36° and 144° 45° and 135°
Sunday, February 1, 2015 at 1:21pm

math
br+bv+ry+vy
Sunday, February 1, 2015 at 12:12pm

math
x_1=3/2, x_(n+1)=3/(4-x_n) prove that the series x_n converges and find its limit.
Sunday, February 1, 2015 at 11:59am

Math
Write the equivalent fraction. 6 2/5, 3 7/10
Sunday, February 1, 2015 at 10:33am

math
How many revolutions does a merry go round make during 6,5 min if its average rotation speed is 2,4 r.p.m?
Sunday, February 1, 2015 at 10:30am

Math
Proove that: a)2^(1/2) is not rational. b) prove that 2^(1/3) is not rational. I have managed to prove the first part, but i am stuck on the second can someone give me an hint please?
Sunday, February 1, 2015 at 10:02am

Math
You have 100 pieces of candy in five bowls. The sum of candy in bowl a and bowl b is 30 pieces. The sum of candy in bowl b and c is 36 pieces. The sum of candy in bowl c and bowl d is 49 pieces of candy. The sum of bowl d and bowl e is 47 pieces of candy. How many pieces of ...
Sunday, February 1, 2015 at 9:23am

math
The sum of the first 10 term of an arithmetic sequence is 145 and the sum of the fourth and ninth term is five times the third term. Determine the first term and constant difference.
Sunday, February 1, 2015 at 5:03am

math
ram weighs 45kg and mary weighs m kg. write an expression for their combined weight.
Sunday, February 1, 2015 at 12:17am

math
what are the coordinates of the shadow cast on the xy plane by a small object placed at the point (10,7,20) assuming that the sun's rays are parallel to the vector (5,3,-2)
Saturday, January 31, 2015 at 11:19pm

Math
I am 4-digit odd number. I am greater than 7000. The digit in my hundreds place is smaller than the digit in my tens place. What number can I be if I am made up of all the digits shown below? 6827
Saturday, January 31, 2015 at 10:27pm

math
Three pupils John, Daniel and David contributed a total of $400 for a party. John contributed $30 more than Daniel while, David contributed three times as much as John. If David contributed $x, write the equation can be used to find David's contribution?
Saturday, January 31, 2015 at 9:10pm

Math- Vector Calculus
A manufacturer sells two products, one at a price of $3000 a unit and the other at a price of $12000 a unit. A quantity q1 of the first product and q2 of the second product are sold at a total cost of $5000 to the manufacturer. Express the manufacturer's profit, as a ...
Saturday, January 31, 2015 at 8:56pm

math
the point t' (-4,-7) is the image of point t under a transformation. if point t is (-4,7) what translation could have occurred
Saturday, January 31, 2015 at 7:13pm

math
When a car makes an emergency stop on dry road, it leaves skid marks. The speed S, in miles per hour, of the car when brakes were applied is related to the length L, in feet, of the skid mark. Functional notation is needed, please help.
Saturday, January 31, 2015 at 6:12pm

math
what is the greatest common factor of the polynomial show? rectangle tiles that have 6x and 6 look like this: ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** !!! !!! !!! !!! !!! !!!
Saturday, January 31, 2015 at 6:11pm

COMM/215
I would like to know if i have used properly structured sentences for the following: 49. To succeed in the new economy, workers will have to learn throughout their careers adapt to changing circumstances, and self-motivate when needed. 50. Some students hate math; some ...
Saturday, January 31, 2015 at 5:00pm

math
on a map, the key indicates that 2.5 centimeters equals 10 miles. a road on the map runs for 30 centimeters. how long is the road?
Saturday, January 31, 2015 at 4:35pm

math
5,280 divided by 9 = is what?
Saturday, January 31, 2015 at 3:38pm

Math
Samuel, Elis and David sell newspapers. One day David sold 20 newspapers more than Elis who sold 10 newspapers more than Samuel. The total number of newspapers they sold that day was 140. If Elis sold y newspapers, write the equations can be used to find the number of ...
Saturday, January 31, 2015 at 3:35pm

Math
A pill weighs 70 mg. 7/9 of the pill is the active ingredient. How many milligrams are in the part of the pill that is not the active ingredient? So if 7/9 is active that means 2/9 is not active. I did 2 divided by 9 which gives me .22 I then multiplied 70 by .22 which gives ...
Saturday, January 31, 2015 at 3:20pm

Math
The number of women passengers in a bus was X. The number of children in the bus was three times that of men passengers but was 6 more than that of women. Write equation that shows the total number of passengers in the bus?
Saturday, January 31, 2015 at 3:03pm

math
A rectangular plot of land measures 40m by 30m. There is a wall on one of the longer sides. Four strands of wire are to be used to fence the three remaining sides of the plot. What length of wire is required?
Saturday, January 31, 2015 at 1:40pm

math
In a group of 126 spectators the ratio of men to women was 3:4. What is the new ratio if 2 more men and 8 more women joined the group of spectators?
Saturday, January 31, 2015 at 1:06pm

Math
A rectangular container 45cm long and 25cm wide was full of water. After removing 22.5 liters of the water, the level of water became 4cm high. What was the height of the container?
Saturday, January 31, 2015 at 12:54pm

math
John and David had packets of tea to be packed into cartons. Each carton holds 46 packets. John packed 63 cartons and remained with 24 packets while David packed 54 cartons and remained with 19 packets. How many more packets of tea had John than David? = 63(46) + 24 – (54...
Saturday, January 31, 2015 at 12:27pm

math
A clock was set on Monday at 8.30 a.m. On Tuesday, the following day, the clock showed 8.45 p.m. when the correct time was 8.30 p.m. How many minutes was the clock gaining in every 24 hours?
Saturday, January 31, 2015 at 12:23pm

Math
If the original number is 8.6 and the new number is 7, what is per cent decrease ?
Saturday, January 31, 2015 at 10:07am

Math
at a boutique, an evening gown is marked at a profit of 40% on the cost price. it is sold in a sale at 20% discount. a. Find the actual profit as a percentage of the cost price. b. if a customer bought it for $448, find i. the marked price ii. the actual profit
Saturday, January 31, 2015 at 9:14am

math
Express 0.78 .as a fraction a/b where a,b,=integer
Saturday, January 31, 2015 at 7:52am

Pure math,Life science,Geography and History
Hi I'm grade10 and I was wondering if you's could help Me to get a career examples after matric because my school took away our Physics for unknown reasons so insted of Physics or another subject that would help you in the future they gave us History please help me ...
Saturday, January 31, 2015 at 6:54am

math
one out of 42 high school ball players plays college ball. one out of 47 college players plays professional ball. what fraction of high school players professional ball?
Saturday, January 31, 2015 at 2:53am

math - hw help
A rectangular picture is 3cm longer than its width, (x+3). A frame 1 cm wide is placed around the picture. The area of the frame alone is 42 cm^2. Find the length of the picture _______cm. _________________ ________ ! ! ! ! ! ! ! ! !x+6 ! ! ! ! ! ! ! !_______! ! x+3 ! ...
Saturday, January 31, 2015 at 1:55am

math help
(x+5)^2 - (x-5)^2 is factored, it can be written as Ax where A is a whole number. The value of A is?
Saturday, January 31, 2015 at 12:05am

math
what is the greatest common factor of the polynomial show: rectangle tiles that have 6x and 6 look like this: ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** !!! !!! !!! !!! !!! !!!
Friday, January 30, 2015 at 11:25pm

Math
A cubic foot of water weighs 62.4 lb. A basketball has a radius of 0.39 ft. How much would the basketball weigh if it was filled with water I did 4 times pie times 0.39^3 over 3 and get 0.24834888, I just need to know what to do now ^= power symbol
Friday, January 30, 2015 at 11:16pm

math
please can you explain this to me I don't understand! Find the value of the following 10! 11! over 7! 13! If your answer is not an integer, write it as an exact fraction. thank you so very much
Friday, January 30, 2015 at 10:59pm

math
what is the expression for the area of the shaded region in the diagram in factored form? diagram: (shaded) Large circle have diameter of 8x (clear) small circle have diameter of 8y ___ my work: Area of large circle - Area of small circle Pi * 4^2 - pi * 4^2 = pi ( 2x+2y)(2x-...
Friday, January 30, 2015 at 9:46pm

Math
Express the function in the form f o g if g(t)=csc t u(t)= sqrt(csc t) f(t)=?
Friday, January 30, 2015 at 9:08pm

math -factor
factors of 9x^2 - 1/100. = (3x + 1/50)(3x - 1/50) ?
Friday, January 30, 2015 at 8:33pm

math
IF 121a^2b^2 + kab + 4b^2 is a perfect square trinomial, then the positive value of k must be ________. my work: 121a^2b^2 = 11ab 4b^2 = 2b Then 2nd term k is twice the product of 11ab & 2b , so the value of k must be: 44 am i right or wrong?
Friday, January 30, 2015 at 7:49pm

MATH
which following trinomial is a perfect square? A. x^2 + 2x - 3 B. x^2 - 4x - 4 C. x^2 + x + 1/4 D. x^2 - x -56 question B & C 1-term and 3-term is perfect square. how do figure which is perfect square?
Friday, January 30, 2015 at 7:25pm

math
If n is a positive integer, then what is the value of (2/3)^n (1 1/2)^n-1? for positive integer n? Express your answer as a common fraciton?
Friday, January 30, 2015 at 6:24pm

math
cube root of 1331 * square root of (1/4) = 5.5 correct?
Friday, January 30, 2015 at 6:01pm

Math
What is the GCF of the terms 8c^3+12c^2+10c? my answer is 2c
Friday, January 30, 2015 at 5:54pm

Math
A math teacher wishes to use groups of 5 and/or 7 students for a class assignment. When she tries to make assignments she notices that it cannot be done with the number of students in her class. However, if the number of students were any larger, the assignments could be made...
Friday, January 30, 2015 at 5:43pm

math
Mrs. Healthy walked along a running track at 2400 m/h. She took 4 min more than Mrs Wise to walk the entire length of the track once. If the track is 800 m ling, Mrs Wise's average speed was ____ m/min.
Friday, January 30, 2015 at 5:40pm

Math
A rectangle family room is 8 yards long and 5 yards wide . At $30 per square yard , how much will it cost to put down vinyl sheet flooring in the room ?
Friday, January 30, 2015 at 4:36pm

math
Four students, Rick, Robin, Ryu, and Roy are registered for the same class and attend inde pendently of one another, Rick 96.5% of the time, Robin 93.3% of the time, Ryu 8 8.2 % of the time, and Roy 77.9 % of the time. What is the probability that on any given day a) at least...
Friday, January 30, 2015 at 2:34pm

math
Hi my question is find the value of the following. 6! 8! over 9! 5! If your answer is not an integer, write it as an exact fraction. Thank you so much. I have no idea how to do it.
Friday, January 30, 2015 at 2:14pm

math
The box plots show attendance at a local movie theater and high school basketball games: Which of the following best describes how to measure the spread of the data? The IQR is a better measure of spread for movies than it is for basketball games. The standard deviation is a ...
Friday, January 30, 2015 at 1:20pm

Math- check my answers pls
Find the area of blue portion of the irregular shape to the right. Round to the nearest tenth. connexus . com /content/media/642756-212012-23145-PM-10​90153268.png i'll upload to imgur if it doesn't work A. 2.7 in2 B. 9.7 in2*** C. 3.4 in2 D. 8.3 in2 i think it&#...
Friday, January 30, 2015 at 12:25pm

Mowat Park High School
History, geography, life science and math litrecy what career choice do or career field do I go to with these subjects
Friday, January 30, 2015 at 12:16pm

math
in an arithmetic sequence the common difference is equal to 2.the first term is also the first term of a geometric sequence. the sum of the first 3 terms of an arithmetic sequence and the sum of the first 9 terms of an arithmetic sequence form the 2nd and 3rd terms of a ...
Friday, January 30, 2015 at 12:13pm

7th grade math
i am having a hard time understanding the venn diagram can someone explain it to me
Friday, January 30, 2015 at 11:34am

math
Select all pairs of ratios that form a proportion. 1/6,4/20 7/9,28/36 14/18,21/27 30/80,6/18
Friday, January 30, 2015 at 10:59am

math
WHY IS 9+10 = 21????????????????????????? WTF KALUS
Friday, January 30, 2015 at 10:05am

Math
A rectangle has sides of length x cm and 2x - 4cm and the length x cm at time t seconds is given by x = 2 + 3t, (t >=0) . Show that the area, Acm2 , the rectangle, in terms of t is A =12t + 18t^2 . Hence find the rate of change of the area at the instant when t = 2..... ...
Friday, January 30, 2015 at 8:19am

math
a wire of length 24cm is bent to form a square.find the area of the square formed.
Friday, January 30, 2015 at 6:37am

Math
When Mrs Lee was 44 years old, her son was twice her daughter's age. Mrs Lee would be twice her son's age when her daughter was 26 years old. How old would Mrs lee be when her daughter was 20 years old?
Friday, January 30, 2015 at 3:44am

English
1. I studied math for 10 years, but I'm still not good at it. 2. I have studied math for 10 years, but I'm still not good at it. ----------------- Which one is grammatical?
Friday, January 30, 2015 at 12:48am

math
consuelo's living room is in the shape of a rectangle and has an area of 360 square feet. the width of the living room is 5/8 its length. what is the length of the living room
Friday, January 30, 2015 at 12:33am

math
marisol is painting on a piece of canvas that has an area of 180 square inches. the lenght of the painting is 1 1/4 times the width. what are the dimensions of the painting
Friday, January 30, 2015 at 12:24am

math
Arnie skates 1 3/4 miles to the lake, then goes 1 1/3 miles around the lake, and then back home. How many miles did he skate?
Friday, January 30, 2015 at 12:24am

math
four friends want to equally share 2 2/3 feet of rope.What amount of rope should each friend get?Draw a picture to solve
Thursday, January 29, 2015 at 11:20pm

business math
A second hand furniture store buys sofas with a list price of $9,500. If the wholesaler offers trade discounts of 10/20/30, find the single equivalent discount.
Thursday, January 29, 2015 at 11:19pm

math
find the unit price for each option shown below. round to the nearest cent if nessicary indicate which option is better to buy?
Thursday, January 29, 2015 at 10:52pm

math
i have tryed this like ten times but cant get the answer can u help. 58,00 times 7.40% after u get the answer between the two multiply by 3
Thursday, January 29, 2015 at 10:48pm

math
'the accountant charged $23 for the hour of work and $23 for each for each hour after that . He earned a total of $127. How many hours did he work'
Thursday, January 29, 2015 at 10:06pm

Math
Name the quadrilateral with exactly one pair of parallel sides. A. Kite B. Parallelogram C. Rhombus D. Trapezoid Is the answer D? Thanks
Thursday, January 29, 2015 at 8:32pm

Math
Wendy earns $2 for every table she serves plus 20% of the total customer order. Define a variable and write an expression to represent the amount of money she earns for one table.
Thursday, January 29, 2015 at 8:31pm

Math
Which is NOT an appropriate classification for a triangle? A. Right Equilateral B. Acute Scalene. C. Obtuse Isosceles D. Right Scalene Is the answer D? Thank you
Thursday, January 29, 2015 at 8:27pm

math
Adam drew two same size rectangles and divided them into the same number of equal parts.He shaded one third of one rectangle and one forth of the other rectangle.What is the least number of parts into which both rectangles could be divided?
Thursday, January 29, 2015 at 8:13pm

math
In a recent survey 5/8 of pet owners say they allow their pet to go outside. Of these, 1/3 allow their pet outside without supervision. Does 5/8*1/3 express the fraction of the pet owners surveyed that allow their pet outside without supervision? My answer is yes. Did I do good?
Thursday, January 29, 2015 at 7:56pm

math
Miss Sue, is the answer that psydag give to Angel at 4:53 today correct? doesn't seem to add up
Thursday, January 29, 2015 at 7:30pm

Math
The perimeters of a kitchen is 528 inches.If the width of the kitchen is 120 inches,what is the length of the kitchen?
Thursday, January 29, 2015 at 7:28pm

math
the product of two mixed numbers that are each between 4 and 5 is between 16 and 25. I think that is false. am I correct
Thursday, January 29, 2015 at 7:21pm

Math
What's the difference between one solution and infinitely many solutions?
Thursday, January 29, 2015 at 6:40pm

Math
Tension wants to build a soccer field for his team. The area of the field should be 125 square feet. The width is 1/5 of the length. What are the dimensions of the field?
Thursday, January 29, 2015 at 6:39pm

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