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March 2, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

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Math
1/5(2x-10) + 4x = -3(1/5x + 4. Solve for x. I need some really help! please and thank you. Ms.Sue?
Friday, February 6, 2015 at 6:16pm

math
Use the line graph to solve. What was the difference in water levels between Week 2 and Week 4? A. 10 m B. 1 m C. 0.10 m D. 0.01 m the water kecvers is 5.3 and 5.4
Friday, February 6, 2015 at 5:52pm

Math
1/5(2x-10) + 4x = -3(1/5x + 4. Solve for x. I need some really help! please and thank you
Friday, February 6, 2015 at 5:36pm

help math
3x+7= -11+2x my answer x=1
Friday, February 6, 2015 at 5:34pm

math
Emilio’s pay varies directly with the number of sales he makes. He made 22 sales and earned $154. How much will he earn for 35 sales? $
Friday, February 6, 2015 at 5:05pm

math
A student’s final grade in chemistry is determined by the following weights: Quizzes 5% Exam 1 20% Exam 2 20% Lab Reports 15% Research Paper 15% Final Exam 25% The student received the following grades: Lab reports: 75 80 70 75 85 69 90 75 Quizzes: 85 60 70 0 75 80 80 80 ...
Friday, February 6, 2015 at 4:09pm

math
Solve the equation sin 5/2¦È = -1/2 for 0¡ã ¡Ü 0 ¡Ü 180¡ã
Friday, February 6, 2015 at 2:48pm

Math
Find the distance between P1(3, –195°) and P2(–4, –94°) on the polar plane. Round your answer to the nearest thousandth. I got 5.75 as my answer. Is this correct?
Friday, February 6, 2015 at 2:45pm

math
Mary bought maize and beans from a wholesaler. She then mixed the maize and beans ratio 4:3, she bought the maize as $4 per kg and the beans $2 per kg. if she was to make a profit of 30 %. What should be the selling of price 1 kg of the mixture?
Friday, February 6, 2015 at 1:47pm

math
The cash price of a car is $25000. A customer paid deposits $ 3750. He repaid the amount owing in 24 equal monthly installments. If he was charged simple interest at the rate of 40% p.a, how much was each installment. 25000 – 3750 = 21250 21250 × 0.4 × 24/12 =...
Friday, February 6, 2015 at 1:20pm

Math (Probability)
It is known that steroids give users an advantage in athletic contests, but it is also known that steroid use is banned in athletics. As a result, a steroid testing program has been instituted and athletes are randomly tested. The test procedures are believed to be equally ...
Friday, February 6, 2015 at 11:44am

Math
Hi! So this question kind of has two parts to it. If someone could help me with this, that would be great! Thanks! :) Juan lives in a large city and commutes to work daily by subway or taxi. He takes the subway 80% of the time because it costs less and he takes a taxi 20% of ...
Friday, February 6, 2015 at 11:43am

math
what do they mean by find the sum of 28g +14g and how do I do it
Friday, February 6, 2015 at 11:42am

math/algebra
Determine three consecutive odd integers such that three times the middle integer is seven more than the sum of the first and third integers.
Friday, February 6, 2015 at 11:24am

math
The measures of two angles of a triangle are 36 and 71. Find the measure of the third angle, and classify he triangle according to its angles. Would you have to add 36 and 71 and then subtract the answer from 180. Which gives you an answer of 73 acute
Friday, February 6, 2015 at 10:57am

math
How long will it take to earn $252 in interest if $1200 is invested at a 7% annual interest rate?
Friday, February 6, 2015 at 10:55am

math
Write a quadratic function rule for the given table in problems 4 and 5. 4. X (0, 1, 2, 3) Y (-6, -5, -7, 3) a. y= x-6 b. y= x-4 c. y= x^2 - 3 d. y= x^2 - 6 5. X(-1, 0, 1, 7) Y(5,4,5,8) a.y=x+4 b.y=x^2+4 c.y= x^2+6 d.y=x+6
Friday, February 6, 2015 at 8:37am

math
A man sold 3/5 of the goods at 20% loss, at what profit% should he sell remaining goods to get 10% profit on the whole?
Friday, February 6, 2015 at 6:13am

math
) A water tank is emptying steadily by 2 liters of water per hour. There were 2 liters of water 6 hours after midnight. Let x represent the number of hours since midnight, and let y represent the number of liters of water in the tank. Find the equation showing the amount of ...
Friday, February 6, 2015 at 3:16am

math
) A water tank is emptying steadily by 2 liters of water per hour. There were 2 liters of water 6 hours after midnight. Let x represent the number of hours since midnight, and let y represent the number of liters of water in the tank. Find the equation showing the amount of ...
Friday, February 6, 2015 at 1:50am

math
An employee started on a salary of £ 6,000 per annum and received a constant increment. If he earned a total of £ 32,400 by the end of five years, calculate his annual increment
Friday, February 6, 2015 at 1:46am

math
Mary bought maize and beans from a wholesaler. She then mixed the maize and beans ratio 4:3, she bought the maize as $12 per kg and the beans $4 per kg. if she was to make a profit of 30 %. What should be the selling of price 1 kg of the mixture?
Friday, February 6, 2015 at 1:43am

math
At the beginning of every year, a man deposited $ 10,000 in a financial institution which paid compound interest at the rate of 20% p.a. He stopped further deposits after three years. The Money remained invested in the financial institution for a further eight years. (a) How ...
Friday, February 6, 2015 at 1:41am

math
The cash price of a car is $25000. A customer paid deposits $ 3750. He repaid the amount owing in 24 equal monthly installments. If he was charged simple interest at the rate of 40% p.a, how much was each installment. 25000 – 3750 = 21250 21250 × 0.4 × 24/12 =...
Friday, February 6, 2015 at 1:37am

math
The demand function for the Sicard wristwatch is given by the following function where d(x) (measured in units of a thousand) is the quantity demanded per week and x is the unit price in dollars. d(x) = 50 0.01x2 + 1 (0 ≤ x ≤ 20) (a) Find d'(x). d'(x) = (b...
Friday, February 6, 2015 at 12:58am

math
Place the numbers below on a number line: ∛7 , -3 , 0 , 105/59 , 7^1/3 , 7^2/3 I tries: ∛7 = 1.912 -3 0 105/59 = 1.779 7 1/3 = 7.33.. <-- right? 7 2/3 = 7.66.. <-- right? first of all ,does the answer i convert right?
Friday, February 6, 2015 at 12:03am

math -hw help
Determine whether the following regular tetrahedrons have an edge length that is a whole number, a rational number or irrational number. The surface are of a tetrahedron is given by the equation: SA = √ 3s^2 Surface are of regular tetrahedron A = 1.5 Surface are of ...
Thursday, February 5, 2015 at 11:50pm

6TH GRADE MATH
No more than 7 copies of a newspaper are left in the newspaper rack. Which inequality represents this situation? A. N<7 B. N>7 My answer is N<7. Do I have answer correct?
Thursday, February 5, 2015 at 11:27pm

math
Alyssa claims that dividing by 4/5 is the same thing as multipying by 5 then dividing by 4. Is she correct?explain why or why not
Thursday, February 5, 2015 at 11:01pm

math
Alyssa claims that dividing by 4/5 is the same thing as multipying by 5 then dividing by 4. Is she correct?explain why or why not
Thursday, February 5, 2015 at 10:59pm

math NEED HELP
2x+5 x+4 ------ - --------- x^2+3x+2 x^2+3x+2 i keep getting x+9 ------------ (x+1)(x+2)
Thursday, February 5, 2015 at 10:45pm

math
Francine can read 24 pages in 30 minutes.How can you mentally calculate the number of pages she can read in 45 minutes
Thursday, February 5, 2015 at 10:17pm

math
Alyssa claims that dividing by 4/5 is the same thing as multiplying by 5 then dividing by 4. Is she correct
Thursday, February 5, 2015 at 10:09pm

Math
A bag contains 33 balls: 10 blue, 11 red, and 12 green. If a person will select balls at random from the bag without replacement, what is the minimum number of balls that need to be selected in order to be sure that the balls selected include 3 balls of the same color?
Thursday, February 5, 2015 at 9:59pm

math
A ramp is what three dimensional shape?
Thursday, February 5, 2015 at 9:34pm

Math
How do I find the volume of a box? Length = 8 in Width= 1 3/4 in. Height= 12 1/8 in.
Thursday, February 5, 2015 at 9:30pm

math
i didi thi question but i keep getting a wrong answer ( x^2+5) - (x^2-2) -------- ------- (x^2-4) (4-x^2) THIS IS A RESTRICTIONS QUESTION PLEASE HELP
Thursday, February 5, 2015 at 9:27pm

math
a metal cutter was accurate to the nearest micron.about how many pieces of metal 0.8188 centimeters long could the metal cutter cut from a 32.253 length of metal?
Thursday, February 5, 2015 at 9:26pm

math
¾ of the seats in a concert hall were occupied. The ratio of adults to children was 7 : 3. If 90 more adults attended the concert, the number of adults would be 3 times the number of children. How many seats were in the concert hall?
Thursday, February 5, 2015 at 9:19pm

math
Madeline walked down her driveway and made a 90° turn to the left. What type of angle did Madeline make?
Thursday, February 5, 2015 at 9:16pm

math
At the beginning of every year, a man deposited $ 10,000 in a financial institution which paid compound interest at the rate of 20% p.a. He stopped further deposits after three years. The Money remained invested in the financial institution for a further eight years. (a) How ...
Thursday, February 5, 2015 at 8:52pm

math
Mary bought and beans from a wholesaler. She then mixed the maize and beans ratio 4:3, she bought the maize as $12 per kg and the beans $4 per kg. if she was to make a profit of 30 %. What should be the selling of price 1 kg of the mixture?
Thursday, February 5, 2015 at 8:26pm

math
The cash prize of a television is shillings 25000. A customer paid deposits Shillings 3750. She repaid the amount owing in 24 equal monthly installments. If she was charged simple interest at the rate of 40% p.a, how much was each installment
Thursday, February 5, 2015 at 8:25pm

math
which of the following shows the numbers in order from least to greatest a)2 /15,2 1/6,2 1/7 b)2 1/8,2 1/4, 2.4 c)2.4,2 1/5,2.6 d)2.2,2.5,2.25
Thursday, February 5, 2015 at 8:13pm

math
for what value of x (radicand) and n (index) can the expression "n root x " not be evaluated?
Thursday, February 5, 2015 at 7:42pm

math
Estimate 5/30 as a percentage.
Thursday, February 5, 2015 at 7:40pm

math
Estimate 5/30 as a percent.
Thursday, February 5, 2015 at 7:32pm

Math
There were 100 children at a carnival. 60 of them were boys. Express the number of girls as a fraction of the total number of children at the carnival
Thursday, February 5, 2015 at 7:18pm

Math
Find the length on each side of a rectangle Perimeter -24m side 1 - 2x-3 side 2 - x
Thursday, February 5, 2015 at 7:08pm

math estimating products
Show three ways to estimate 3 / 5 ×9 1/2. Identify each method you use.
Thursday, February 5, 2015 at 7:00pm

Math
Three eights of the cast in a musical have to sing. What fraction of the cost does not have to sing?
Thursday, February 5, 2015 at 6:55pm

math
Mary bought and beans from a wholesaler. She then mixed the maize and beans ratio 4:3 she bought the maize as $12 per kg and the beans $4 per kg. if she was to make a profit of 30 %. What should be the selling of price 1 kg of the mixture?
Thursday, February 5, 2015 at 6:51pm

Math
Find the length on each side of a triangle. Perimeter - 35m side 1 - x side 2 - x+2 side 3 - x+3
Thursday, February 5, 2015 at 6:43pm

Math
mars orbits the sun at a rate of 15 miles per seconds. how far does mars travel in one day? is the answer 360 miles in a day?
Thursday, February 5, 2015 at 6:14pm

Math
I am a 3digit number divisible by 3. my tens digit is three times as great as my hundreds digit and the sum of my digits is 15. if you were reverse my digits I am divisible by six, as well as by 3. what number am I?
Thursday, February 5, 2015 at 6:12pm

math
The ratio of one side of a polygon to the corresponding side of a similar polygon is 5:8 The perimeter of the second polygon is 96. What is the perimeter of the first polygon.
Thursday, February 5, 2015 at 6:11pm

Math
I am a three digit number less than 300. I am divisible by two and five but not 3. What number am I?
Thursday, February 5, 2015 at 6:03pm

math
kathyrn is thinking of four numbers from 1 through 9 with a sum of 18 find the numbers. this is the questions to the answer above.
Thursday, February 5, 2015 at 5:55pm

math
one company makes 50 t-shirts for $295 and another offers 40 t-shirts for $250. which company is the better deal? answer please
Thursday, February 5, 2015 at 5:51pm

math
On Rhonda's family farm, the workers picked 5/12 of the strawberries in the first week. These strawberries were put in 10 crates, and 20kg were left over. The crates were sent off to the supermarket and the other 20kg were sold at the family fruit stand. During the second ...
Thursday, February 5, 2015 at 5:41pm

Math
a comic book store sells used comic books in a package of 5 and new comic books in a package of 3. if Amy buys a total of 16 comic books, how many packages of new and used comic books dis she buy. i think it is 2 packages of used comic books and 2 new comic books. am i correct?
Thursday, February 5, 2015 at 5:26pm

MATH
Anna bought seven half gallons of apple juice and 18 quarts of orange juice. How many gallons of juice did she buy
Thursday, February 5, 2015 at 5:08pm

Math Ms Sue please help me
In the diagram, lines m and n are parallel. If m∠2 = 150°, find the measure of the following angles. lines m and n are parallel. If m∠2 = 150°, find the measure of the following angles 1. ∠4 = ? (1 point) 120º 50º 30º 150º 2. &#...
Thursday, February 5, 2015 at 5:02pm

Math
If you eat 1/6 of one pizza 1/4 of another pizza 5/12 of another pizza and 1/3 of another pizza have you eaten the equivalent of a whole pizza
Thursday, February 5, 2015 at 4:39pm

Math
1. Does the table represent an exponential function? X: 1, 2, 3, 4 Y:-1,-8,-27,-64 Yes or No? I am confused on this, so help would be nice. Thank you.
Thursday, February 5, 2015 at 4:25pm

math
what is the mystery number?greater than 1oo -odd more than 3 tens less than 150 the sum of the digits is 12?? please help
Thursday, February 5, 2015 at 4:06pm

Math
would 1,661.06 turn into 1,661 if I rounded it to the nearest tenth ?
Thursday, February 5, 2015 at 3:40pm

Math
What's the value of the missing angle *picture of a triangle and square put together which basically makes a hexagon. angles are 90 degrees, 90 degrees, 130 degrees, 130 degrees. I have to find the last angle.* A. 50 degrees B. 60 degrees C. 100 degrees D. 240 degrees I ...
Thursday, February 5, 2015 at 3:16pm

Math
2. Wolfgang wants to enlarge a picture he developed. Which factor listed below would scale up (enlarge) his picture the most if he used it to multiply its current dimensions? a. 7/8 b. 14/14 c. 1 4/9 d. 3/2 I know b is not bcs is equal to 1. neither a since is less than 1. ...
Thursday, February 5, 2015 at 2:49pm

math
On Rhonda's family farm, the workers picked 5/12 of the strawberries in the first week. These strawberries were put in 10 crates, and 20kg were left over. The crates were sent off to the supermarket and the other 20kg were sold at the family fruit stand. During the second ...
Thursday, February 5, 2015 at 2:41pm

math
A rectangular tank of base 2.4 m by 2.8 m and a height of 3 m contain 3,600 liters of water initially. Water flows into the tank at the rate of 0.5 liters per second Calculate the time in hours and minutes, required to fill the tank
Thursday, February 5, 2015 at 2:30pm

math
A businessman bought two bags of maize at the same price per bag. he discovered that one bag was of high quality and the other of low quality. On the high quality bag he made a profit by selling at $ 1,040. Whereas on the low quality bag he made a loss by selling at $880. If ...
Thursday, February 5, 2015 at 2:26pm

math/algebra
A total of 770 tickets were sold for the school play. They were either adult tickets or student tickets. There were 70 more student tickets sold than adult tickets. How many adult tickets were sold?
Thursday, February 5, 2015 at 2:08pm

math
Tony wants the distribution of his employees to match the distribution of the customers. If Tony has 230 total employees, how many should he assign to the 1:00 p.m. shift?
Thursday, February 5, 2015 at 1:39pm

math
summation of indexed data Could someone please help me I am very confused on this problem.Thank you I have added all the number up and get -31. than it says to find -31- it have the sum with 15 over i=I than after that behind the sum is xi. What do i do to find the number do I...
Thursday, February 5, 2015 at 1:34pm

Math
On Rhonda's family farm, the workers picked 5/12 of the strawberries in the first week. These strawberries were put in 10 crates, and 20kg were left over. The crates were sent off to the supermarket and the other 20kg were sold at the family fruit stand. During the second ...
Thursday, February 5, 2015 at 1:00pm

math
Mrs lee is 26 years older than her son. how old is Mrs lee when she is 3 times as old as her son.
Thursday, February 5, 2015 at 11:02am

math
a pulley is used to lift a mass with a force of 900N to a height of 10 metres in 2 minutes.find the work done by the force and also the power
Thursday, February 5, 2015 at 8:35am

math-urgent
show that if A= A inverse, then det(A) = +/- 1 if A(transpose) = A(inverse), what is det(A)?
Thursday, February 5, 2015 at 7:52am

math
The temperature in a room is changing at a steady rate. If x is the number of minutes since noon, the temperature was -4° C when x = -3 minutes and the temperature was 6° C when x = -5 minutes. Find the rate of change in temperature in degrees per minute. The answer is...
Thursday, February 5, 2015 at 5:33am

math
The perimeter of a basket court is 102 meters and the length is 6 meters longer than twice the width. What is the length and width?
Thursday, February 5, 2015 at 2:02am

math
Two Lorries A and B ferry goods between two towns which are 3120 km apart. Lorry A traveled at km/h faster than lorry B and B takes 4 hours more than lorry A to cover the distance. Calculate the speed of lorry B
Thursday, February 5, 2015 at 1:05am

math
Can somebody help me solve this problem for x using the distributive property? 1/2(4x+10)=16 I got x=9
Thursday, February 5, 2015 at 12:47am

math
You have 100 feet of fencing with which to construct a circular pen. what is the area can you enclose?
Thursday, February 5, 2015 at 12:45am

math
write an expression for the following frase and evaluate. -8 decreased by the product of-4 and 3 -8-(-4x3)????
Thursday, February 5, 2015 at 12:12am

math
when a cold front move through, the temperature dropped at an average of 3 degree per hour.using a signed number find the change in temperature after six hours
Thursday, February 5, 2015 at 12:09am

math
A man walks directly from point A towards the foot of a tall building 240m away. After covering 180m, he observes that the angle of the top of the building is 45. Determine the angle of elevation of the top of the building from A.
Wednesday, February 4, 2015 at 11:51pm

math
A rock is thrown up in the air at 30 ft/second. It has height in feet given by H(t) = −16t 2 + 30t. When does the rock have a velocity equal 10 ft. per a second?
Wednesday, February 4, 2015 at 11:49pm

math
a service of juice is 250 ml. how many servings are in a doze liters of juice?
Wednesday, February 4, 2015 at 11:42pm

math
If each square unit represents 5 square feet, what is the area of Elain's bedroom in square feet? Use repeated addition. can you please show the work?
Wednesday, February 4, 2015 at 11:30pm

math
I flip a fair coin seven times in a row. What is the probability that I get at most five heads?
Wednesday, February 4, 2015 at 11:10pm

math
50-30-4×2+10 20-4 16×2+10 42 ???
Wednesday, February 4, 2015 at 10:31pm

Math
A factory whistle blows every 30 minutes. The clock tower chimes every 15 minutes. If they both sounded at 1:00 p.m., at what time will you hear them both at the same time again?
Wednesday, February 4, 2015 at 10:21pm

Math
Write in simplest form 4/7 divided by 5/8
Wednesday, February 4, 2015 at 10:18pm

Math
Area od a patio is 24 meters. sq. A patio stone is square with each side 30 cm. How many will be needed to complete the patio?
Wednesday, February 4, 2015 at 9:56pm

Math
Two cyclists leave from an intersection at the same time. One travels due north at a speed of 18mph, and the other travels due east at 24mph. how long until the distance between them is 150 miles?
Wednesday, February 4, 2015 at 9:45pm

math 4th grade
Lance wants to find the total length of 3 boards. He uses the expression 3 1/2 + (2+ 4 1/2). How can Lance rewrite the expression using both the Associative and Commutative Properties of Addition?
Wednesday, February 4, 2015 at 8:57pm

math
Help solving one more question please!Mason spent $15.85 for 3 notebooks and 2 boxes of markers.The boxes of markers cost $3.95 each,and the sales tax was $1.23.he also used a coupon for $0.75 off his purchase.If each notebook had same cost,how much did each notebook cost?
Wednesday, February 4, 2015 at 8:49pm

Math
Using five 2's make the following numbers: 1 5 7 9 Thank you for your help
Wednesday, February 4, 2015 at 8:28pm

Math
Simplify the following 1. [(4x^2)^-1]^-2 / [(-2x^-2)^-3]^-2 2. [(8x^9) / (2x^5)]^-2 3. (-15x^-3) / (25x^-5)
Wednesday, February 4, 2015 at 8:27pm

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