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February 1, 2015

Homework Help: Math

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Recent Math Questions

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Math
Student budgeted a $25 a month for phone service. If the telephone company charges $18 a month for basic service and $.05 a minute for each long distance call, how many minutes can be spent on long distance calls each month?
Monday, November 24, 2014 at 8:45pm

Algebra math Question
Find the dimensions of the rectangle meeting the specified conditions. The perimeter is 352 feet and the length is 4 1/2 times the width. width ft length ft
Monday, November 24, 2014 at 8:43pm

Algebra math Question
Find the dimensions of the rectangle meeting the specified conditions. The perimeter is 20.4 millimeters and the length is 2.4 times the width. (Round your answers to one decimal place.) width mm length mm
Monday, November 24, 2014 at 8:29pm

Math - ratio
Mr. Rahim had the same amount of money in his three bank accounts at first. He deposited $44 into account b and $ 80 into account c. In the end, the ratio of the amount of money in ac!@#$%^& a to the amount of money in account c was 2:7. How much money was there in account b ...
Monday, November 24, 2014 at 8:17pm

math
36-9/{(0.24*5)+(0.66*5)}
Monday, November 24, 2014 at 8:07pm

Math
A worker uses 4gray tiles for every 5blue tile That he uses .if he uses 60gray tiles how many blue tiles does he use
Monday, November 24, 2014 at 8:01pm

math problem (please help)
What are the dimensions of a rectangular tract of land if its perimeter is 70 kilometers and its area is 300 square kilometers? km (smaller value) akm (larger value)
Monday, November 24, 2014 at 7:58pm

math
A cone is made from the figure shown by joining the straight edges and securing them with tape, calculate the angle of inclination, to the nearest tenth of a degree, for the side of the cone.
Monday, November 24, 2014 at 7:55pm

math!!
mike and sam begin saving money at the same time. mike plans to save $3 a month and sam plans to save $8 a month. After how many months will sam have $25 more than mike?
Monday, November 24, 2014 at 7:32pm

Math I need help ASAP! I'm getting timed
Which ratios form a proportion? 1. 4/12 , 6/8 2. 16/12 , 3/4* 3. 3/2 , 15/14 4. 10/16 , 5/8 Which ratio forms a proportion with 9/15? 1. 6/10 2. 16/21 3. 36/50 4. 45/70 A textbook weighs 2.5 pounds. How many kilograms does the textbook weighs? Round your answer to the nearest ...
Monday, November 24, 2014 at 7:05pm

math
Ms.Johnson gives twice as much daily homework as Mr. Beach. Mr.Beach gives out 10 minutes less than Mrs.Rodriguez. if Mrs.Rodriguez gives 35 minutes of homework,what is the total amount of homework given by the three teachers? ---- So do you just half it so,Mr.Beach gives 5,...
Monday, November 24, 2014 at 7:01pm

MATH
Janet dreams to go on vacation in three years. How much should she invest now so that she will have $15,000 by that time if the account earns 1 3/8% compounded quarterly?
Monday, November 24, 2014 at 6:58pm

MATH
{56.0/25}+1-100=
Monday, November 24, 2014 at 6:50pm

math calculus
if i,j,k are the standard unit basic vectors, in 3 space, determine the value of k dot(j-3k)+(i-4k) dot (i-4k)-8 |i cross -k| (Simplify without using components)
Monday, November 24, 2014 at 6:48pm

Math
You invest $5,000 at 3% monthly for 15 years. How much interest will you earn?
Monday, November 24, 2014 at 6:43pm

Math
Tom Invested $7,000 at 6.5% interest compounded monthly. How much will be in this account after 18 months?
Monday, November 24, 2014 at 6:31pm

math
change the following mixed numbers to a fraction in the forma/b were a and b are integers 3 5/6 ?
Monday, November 24, 2014 at 6:15pm

math
arrange in order smallest to largest 0.8315, 0.75 ,0.7024 is this right 0.75 0.7024 0.8315
Monday, November 24, 2014 at 6:06pm

math
The ratio of boys to girls on the bus is 20/15
Monday, November 24, 2014 at 6:04pm

MATH
In a fraternity with 38 members , 18 take math, 5 take both math and literature and 8 take neither math or literature. how many take literature but not math? I came up with 16 is that correct or am i lost ?
Monday, November 24, 2014 at 6:03pm

Math
As a savings plan for college, when their son Bill was born, the Johnson's deposited $10,000 in an account paying 4% compounded quarterly. How much is this account when Bill is 18 years old?
Monday, November 24, 2014 at 6:01pm

Math Help!
Mrs. Miller sells a house for $179,000. If she earns a commission of 6%, how much money does she earn? Write a porportion and show your work. My answer 179,000/100=x/6 107400=100x 10,740=x Am I right? Thank you
Monday, November 24, 2014 at 5:15pm

math
Jane had $7 and her sister had $2. Their parents gave each of them an equal amount of money. Then, Jane had twice as much money as her sister. How much money did their parents give each of them
Monday, November 24, 2014 at 5:05pm

Math Help!
30% of 60 is what number? A. 15 B. 30 C. 18 D. 40 Is the answer C? Thank you
Monday, November 24, 2014 at 5:04pm

math physics
What frequency is heard by an observer who hears the 450 Hz siren on a police car traveling at 35 m/s away from her? Assume that the velocity of sound in air is 345 m/s. Is this the correct? 450*345/(345+35) =408Hz
Monday, November 24, 2014 at 5:04pm

Math Help!
What percent of 50 is 15? A. 4% B. 25% C. 30% D. 15% Is the answer C? Thank you
Monday, November 24, 2014 at 5:00pm

Math
Probability Question: A college student claims that she can identify 3 different types of cheese by taste. An experiment is set up to test her ability. She is blindfolded and given three pieces of cheeses, each representing a different brand. What is the probability that she ...
Monday, November 24, 2014 at 4:52pm

Math Help!
Which proportion can be used to solve the following percent problem? What is 50% of 70? A. x/70=50/100 B. x/50=70/100 C. 50/70=x/100 D. 70/x=50/100 Is the answer B? Thank you
Monday, November 24, 2014 at 4:50pm

Math Help!
The bill at a restaurant is $100, and Mrs. Johnson wants to leave a 15% tip. Approximately how much money should she leave? A. About $5.00 B. About $10.00 C. About $15.00 D. About $20.00 Is the answer C? Thank you
Monday, November 24, 2014 at 4:43pm

math
if the perimeter of an equilateral is 24 inches find a side of the triangular
Monday, November 24, 2014 at 4:43pm

math
a car traveling 8 m/s suddenly brakes to a complete stop. THe stopping time was .36 seconds. what is the acceleration of the car?
Monday, November 24, 2014 at 4:39pm

Math Help!
Estimate 48% of $20.00. A. About $12.00 B. About $11.00 C. About $15.00 D. About $10.00 Is the answer D? Thank you
Monday, November 24, 2014 at 4:37pm

Math Help!
ALice plays basketball. In one game she shoots 21 free throws and makes 81.25% of them. Estimate how many free throws she makes. A. About 16 B. About 2 C. About 20 D. About 14 Is the answer A? Thank you
Monday, November 24, 2014 at 4:33pm

Math
Find the volume of a right circular cone with base diameter 12.0 m and slant height is 10.0m . Round to the nearest whole
Monday, November 24, 2014 at 4:24pm

math
the find the volume of a pyramid that has a slant height of 176cm and a square base with area 9.00m
Monday, November 24, 2014 at 4:03pm

Math Physics
What is the wavelength in metres of an electromagnetic wave with a frequency of 10^14/s?
Monday, November 24, 2014 at 3:14pm

Math Physics
What is the wavelength of an electromagnetic wave with frequency 50.0 MHz? Am I starting this problem like this? 3.00*10^8/50*10^6 =6*10^12
Monday, November 24, 2014 at 1:58pm

Math
Factor 2y^4+y^2-10y+5 Please help!thank you
Monday, November 24, 2014 at 11:27am

MATH
Al saves pennies . He agrees to give 1/3 of his pennies to Bev if she would give 1/3 of what she got from Al to Carl and if Carl in turn would give 1/3 of what he got from Bev to Danni. Bev, Carl and Danni agreed and recived 9 pennies. hOW MANY PENNIES DID aL INTINALLY HAVE?
Monday, November 24, 2014 at 11:26am

math
Caroline runs 3 and one half miles in 221 over 4 minutes. How many miles does she run per minute?
Monday, November 24, 2014 at 11:19am

business math
Family Flowers employs 17 people, of whom 14 earn gross pay of $640 each and 3 earn gross pay of $720 each on a weekly basis. What is the employer<s share of total social security and Medicare taxes for the first quarter of the year? The tax rate for security is 6.2% and ...
Monday, November 24, 2014 at 11:18am

math
The speeds of two trains A and B are in the ratio of 5:6. A takes 36 minutes more than B to reach the destination.what is the time taken by A to reach the destination to cover the same distance?
Monday, November 24, 2014 at 10:21am

math
A and B together can make a wall in 60 days. A has worked for 12 days, B finishes the remaining work in 36days. How many days will B take to finish the whole work alone?
Monday, November 24, 2014 at 10:16am

math
On a highway, lighting poles are 50m apart. How many lighting poles will be passed by a bus that is moving at a speed of 45kmph in 4 hours.
Monday, November 24, 2014 at 10:12am

Math
Which ratios does NOT form a proportion? 1. 24/96 , 27/108 2. 17/102 , 12/70 3. 21/51 , 35/85 4. 45/75 , 63/105 Which ratios form a proportion? Use cross products to test each pair. 1. 9/17 , 27/50 2. 12/35 , 24/75 3. 15/55 , 33/ 121 4. 12/35 , 20/70 Which ratio forms a ...
Monday, November 24, 2014 at 10:07am

Math
Given TriangleABC with a = 9, b = 15, and m<A= 28 degrees, find the number of distinct solutions. I got two solutions. Not sure if I am correct though.
Monday, November 24, 2014 at 10:03am

Math
Given TriangleABC with a = 9, b = 15, and m<A= 28 degrees, find the number of distinct solutions. I got two solutions. Not sure if I am correct though.
Monday, November 24, 2014 at 10:03am

Math
Given TriangleABC with a = 9, b = 15, and m<A= 28 degrees, find the number of distinct solutions. I got two solutions. Not sure if I am correct though.
Monday, November 24, 2014 at 10:02am

Math
Determine the linear velocity of an object with an angular velocity of 8.1 radians per second at a distance of 10 centimeters from the center. Use pi. Round the answer to the nearest tenth. I got 47, is this correct?
Monday, November 24, 2014 at 9:54am

math,trigonometry
a 35-foot long ladder is leaninig against the wall of a building. how far from the ground is the top of the ladder and how far from the base of the buildings is its foot if it makes a 20° angle with the wall ?
Monday, November 24, 2014 at 8:43am

math
Carina has twice as many quarters as dimes. If she has $3.60, how many quarters does she have?
Monday, November 24, 2014 at 6:30am

math
Ron has $1.35 in dimes and quarters in his pocket. If there are twice how many quarters does he have?
Monday, November 24, 2014 at 4:52am

math
Ron has $1.35 in dimes and quarters in his pocket. If there are twice as many dimes in his pocket as quarters, how many quarters does he have?
Monday, November 24, 2014 at 4:50am

math
A letter is chosen at random from the word EXTRATERRESTRIAL. Find the probability of the given event. (a) The letter A is chosen.
Monday, November 24, 2014 at 1:26am

math
Kaylin mixed two liquids. One container held 7/8 cup and the other held 8/10 cup. What is the total amount of the mixture? My answer is 1 cup 4/5 of mixture.
Sunday, November 23, 2014 at 11:32pm

Math (adding fractions)
Sheila spent x hours studying on a Tuesday and 1/4 hour studying on Thursday. What was the total amount of time in hours Sheila spent studying if x = 2/4? Do I add 1/4 + 2/4?
Sunday, November 23, 2014 at 11:26pm

math
1/3 / 7/9 =1/3 * 9/7 =9/21 is this right??
Sunday, November 23, 2014 at 8:39pm

math
1 3/5 - 5/6 =8/5 - 6/5 =2/5 or is it =1/3/5 - 5/6 =48/30 - 25/30 =23/30 I don't know which one is right. Pleas e help!
Sunday, November 23, 2014 at 8:20pm

math
3/8 + 2 1/2 =3/8 + 5/2 =8/10 =4/5
Sunday, November 23, 2014 at 8:15pm

math
5/7 *9/10 =63/70 =9/10
Sunday, November 23, 2014 at 8:11pm

math,trigonometry
From a tower 36m high situated on one side of a river, the angle of desperation of the opposite side of the river is 25 degree. FInd the width of the river?
Sunday, November 23, 2014 at 8:10pm

math
5/7 * 9/10 = 50/70 * 63/70 =3150/70 =45
Sunday, November 23, 2014 at 8:07pm

math
4/5 * 3/4 = =16/20 * 15/20 =240/20 =12 is this right?
Sunday, November 23, 2014 at 7:51pm

Trig- math
Find the area of a triangle if the sides of the triangle have the lengths 849mi, 930mi, and 1301mi. Here's my work: a=849 b=930 c=1301 A=.5(849)(930)sinA sin A = 394,785 mi^2 (this number doesn't seem right to me, can you explain to me what I did wrong)?
Sunday, November 23, 2014 at 7:25pm

Math (trigonometry)
Hi, I need help with these problems, I'm not sure where to start. The book's examples are different. Thanks in advance!! 1.) To find the distance AB across a river, a distance BC of 472m is laid off on one side of the river. It is found that B=108.1 degrees and C= 17.9...
Sunday, November 23, 2014 at 6:31pm

Basic Math (Check my answer)
Which of the following is equal to 1/6 ÷ 1/18? Assume the shapes are rectangular. Describe another situation that this quotient models. A) The area of a planter that is 1/6 yard wide and 1/18 yard long. B)The width of a 1/18-square-meter flower bed that is 1/6 meter ...
Sunday, November 23, 2014 at 6:10pm

Math
How do you graph a rectangle and find its area if: A(1,-3) B(1,3) C(-9,3) D(-9,-3)
Sunday, November 23, 2014 at 5:43pm

6th Grade Math Homework Check
In the first hour after opening, a coffee shop used 5 2/3 pounds of unflavored coffee. The shop used 2 1/2 times as much flavored coffee as unflavored. How many pounds of flavored coffee did the shop use? My Answer: 14 1/6
Sunday, November 23, 2014 at 5:40pm

math
The atmospheric pressure P in pounds per square inch (psi) is given by P = 14.7 e−0.21 awhere a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 11.11 psi, what is its altitude? (Recall that 1 mi = 5,280 ft.
Sunday, November 23, 2014 at 3:55pm

math
A jar contains 133 pennies. A bigger jar contains 1 2/7 times as many pennies. What is the value of the pennies in the bigger jar
Sunday, November 23, 2014 at 3:41pm

Math
how to write 4(x+2)+3x+2(x-y) in the distribt. property form
Sunday, November 23, 2014 at 3:39pm

math
Two sides of a rectangular fence are 5 5/8 feet long The other two sides are 6 1/4 feet long. what is the perimeter
Sunday, November 23, 2014 at 3:37pm

Math
32(2)^2x-12(2)^x+1=0 I've spent too much time trying to figure this out. Please help.
Sunday, November 23, 2014 at 3:13pm

math
3/4 of 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 of number of children. How many seats were in the concert hall?
Sunday, November 23, 2014 at 2:29pm

math
what are the steps in determining how to maximize the area of a rectangle given a specific perimeter?
Sunday, November 23, 2014 at 1:54pm

Math
The temperature on one day in January for Phoenix, AZ, is 60 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -29 degrees Fahrenheit. What is the difference between these two temperatures?
Sunday, November 23, 2014 at 12:00pm

math
WHEN MR. LOWE RETURN FROM HIS FISHING TRIP, HIS STUDENTS INQUIRED AS TO THE LENGTH OF HIS PRIZE CATCH. MR. LOWE ANSWERED. "THE HEAD MEASURED 9 INCHES." "THE TAIL WAS AS LONG AS THE HEAD AND HALF THE BODY." THE BODY WAS AS LONG AS THE HEAD AND TAIL." ...
Sunday, November 23, 2014 at 11:19am

math
A baloon is 200 m off the ground and rising vertically at the rate of 15 m/sec an automobile passes beneath it travelling along a straight road at a constant rate of 45km/hour how fast is the distance between them changing one second later???
Sunday, November 23, 2014 at 6:50am

Math (trig)
The distance from home plate to dead center field in a certain baseball stadium is 409 feet. A baseball diamond is square with a distance from home plate to first plate base 90 feet. How far is it from first base to dead center field? I also need help setting this up.
Sunday, November 23, 2014 at 1:58am

Math (trig)
A force of 35lb is required to hold a 72lb toolbox on an incline. What angle does the incline make with the horizontal? Please help me set this up.
Sunday, November 23, 2014 at 1:56am

math
In how many different ways can two pennies, three nickels, four dimes, and five quarters be arranged in a row?
Sunday, November 23, 2014 at 1:14am

Math
Hello i am doing assignment in my math 20-2 class. The question is: data collected of cars passing on the road revealed that the average speed was 90 km/h with a standard deviation of 5 km/h and the data which is normally distributed a policeman is assigned to set photo radar ...
Saturday, November 22, 2014 at 11:43pm

Math
I also need help with Find the component form of v if absolute value of v=2 and the angle it makes with the x-axis is 30 degrees. I cannot find a book example. help me.
Saturday, November 22, 2014 at 9:14pm

Math
Find the angle between the vectors u and v if u=<-4,3> and v=<-3,2>, and Round answer to two decimal places. I found that it is (12*sqrt13)/65, my point of confusion is how do I find the angle?
Saturday, November 22, 2014 at 9:12pm

Math
Round to the nearest hundredths 23.456
Saturday, November 22, 2014 at 7:36pm

math
what is 1/3 divide 5/8
Saturday, November 22, 2014 at 4:12pm

math
5/7 times9/10
Saturday, November 22, 2014 at 4:08pm

statistics
Hello i am doing assignment in my math 20-2 class. The question is: data collected of cars passing on the road revealed that the average speed was 90 km/h with a standard deviation of 5 km/h and the data which is normally distributed a policeman is assigned to set photo radar ...
Saturday, November 22, 2014 at 2:27pm

math
1/3 divided by 5/8
Saturday, November 22, 2014 at 1:19pm

math
4/5 times 3/4
Saturday, November 22, 2014 at 1:12pm

math
4/3 times 3/4
Saturday, November 22, 2014 at 1:08pm

Math
Resolve in partial fractions (x+6)/((x^2+1)(x-2)^2) Using let x = ...
Saturday, November 22, 2014 at 10:37am

Math
A ball rebounds the ground to a height of 72 cm, and each time it rebounds to two thirds of the height. Estimate the total distance the ball travels before it comes to rest
Saturday, November 22, 2014 at 8:28am

Math
The fourth term of A P is 37 and the 6th term is 12 more than the fourth term.find the first and the seven terms
Saturday, November 22, 2014 at 5:54am

math
a vertical flagpole casts a shadow of 12ft long at the same time that a nearby vertical past 8ft casts a shadow 3ft long. Find the height of the pole
Saturday, November 22, 2014 at 2:06am

MATH
Kyle is making a model of an Egyptian pyramid for his history class. Each side of the pyramid he makes has a base of 18.6 cm and height 14.8 cm. Calculate the height of Kyle's pyramid to the nearest tenth of a centimeter. Don't I need an angle to calculate this? I don...
Friday, November 21, 2014 at 11:27pm

Math Check please
Suppose c is inversely proportional to the square of d. If c = 4 when d equals 3.find the constant of proportionality and write the formula for c as a function of d c= 36/d^2 use your formula to find c when d is 5. is it 100/d2 or 100/5^2? I know the formula is c=k/d^2 c = ?
Friday, November 21, 2014 at 11:13pm

Math
Beginning January 1, Community Hospital had 175 inpatient beds. On June 15, the bed count was increased to 200. The hospital provided 67,106 service days to inpatients and 68,012 service days to discharged patients. In addition, there were 9,601 admissions and 9,488 discharges...
Friday, November 21, 2014 at 10:45pm

Math
A tightrope walker attaches a cable to the roofs of two adjacent buildings. The cable is 23.5 m long. The angle of inclination of the cable is 13 degrees. The shorter building is 12.0 m high. What is the height of the taller building to the nearest tenth of a metre? I tried ...
Friday, November 21, 2014 at 10:36pm

Math
Find all real solutions x to (4^x)-(2^x)=56. Please explain in steps! Thank you.
Friday, November 21, 2014 at 9:29pm

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