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March 29, 2015

Homework Help: Math

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Recent Math Questions

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Math
Mike was voted Most Valuable Player for 2 out of 5 seasons. What is the probability that Mike will be Most Valuable Player this year? I thought the answer would be 40%, but I'm not sure. I wasn't sure how to include this year in with the past 5 years or even if I ...
Saturday, March 7, 2015 at 5:22pm

Math
Mike was voted MVP for 2 out of the past 5 seasons. What is the probability that he will be MVP this year? Thank you!
Saturday, March 7, 2015 at 4:54pm

math
John bought a new car for shilling 800,000. After 5 years, he sold it through a second-hand car dealer. The dealer charged a commission of 4% for the sale of the car. If John received shillings 480,000, calculate the annual rate of depreciation of the car.
Saturday, March 7, 2015 at 4:42pm

Math
Predict how many times a six sided die will land on the six if you roll it 24 times? Thank you!
Saturday, March 7, 2015 at 4:40pm

Math
a scale drawing of a rectangular field is 10 centimeters by 8.5 centimeters. If the actual field has a dimension of 40 meters by 34 meters which could be the scale used for the drawing? a. 0.5cm = 16m b. 0.5 cm = 8m c. 0.5 cm = 4m d. 0.5 cm =2m I multiplied 8.5 by 10 but don&#...
Saturday, March 7, 2015 at 4:31pm

math
find integral exp(-x)x^-2
Saturday, March 7, 2015 at 4:29pm

Math (Help)
When baking a cake, you have a choice of the following pans: a round cake pan that is 2 inches deep and has a 7 inch diameter a 6 inch × 9 inch rectangular cake pan that is 2 inches deep a. Which of these pans has the larger volume? Justify your answer. b. Excluding the ...
Saturday, March 7, 2015 at 4:27pm

math
Give that x is angle in the first quadrant such that 8sin 2x + 2cosx – 5 = 0 Find: cosx tanx
Saturday, March 7, 2015 at 4:18pm

Math
Alex needs to buy compressed air to fill 5 empty cylindrical tanks for his tire store. Each tank is 12 feet deep and has a radius of 6 feet. What is the volume of compressed air needed?
Saturday, March 7, 2015 at 3:20pm

Math
A gift box is 15 inches long, 10 inches wide, and 3 inches high. How much wrapping paper is needed to wrap the gift box? 225 in.2 450 in.2 525 in.2(my answer) 650 in.2
Saturday, March 7, 2015 at 3:12pm

math
The distance between towns M and N is 280 km. A car and a bus travel from M to N. The average speed of the bus is 20 km/h less than that of the car. The bus takes 1 h 10 min more than the car to travel from M and N. (a) If the speed of the bus x km/h ? car = x bus x - 20 + 1 1/6
Saturday, March 7, 2015 at 1:54pm

math
What is 100+91x3+94+93+82+89/8?
Saturday, March 7, 2015 at 1:05pm

Math
A military plane maintains an altitude of 15,000 feet over a vast flat desert. It flies at a constant speed on a line that will take it directly over an observer on the ground. At noon, the angle of elevation from the observer’s shoes to the plane is 30 degrees, and the ...
Saturday, March 7, 2015 at 11:55am

Math
Two parallel resistors have resistances R1 and R2. If the total resistance is R, then 1/R = 1/R1 + 1/R2. R1 is increasing at 0.04 ohm/sec,and R2 is decreasing at 0.03 ohm/sec. How fast is the total resistance changing at the moment that R1 is 3 ohms and R2 is 4 ohms?
Saturday, March 7, 2015 at 11:51am

SAT Math
If x and y are positive integers, which of the following could be equal to 3x+ 4y? The answer is 10, but not sure on how to get the answer? Also, is there a short cut to get to the answer without taking a lot of time on the SAT to work this type of problem out? Thank you
Saturday, March 7, 2015 at 9:34am

math
1 2/3 add 2 8/9 then divide the answer by 3. 1 2/3 add 2 8/9= 7/3 add 26/9= 21/9 add 26/9=47/9 I got that bit I just dont know how to divide
Saturday, March 7, 2015 at 7:53am

Math
80 boys took the examination in the three subjects: Chinese, English and Mathematics, and none of them failed in all three subjects. It was noted that 8 passed in English only and 10 passed in Mathematics only; 7 passed in Mathematics and Chinese but not in English, 40 passed ...
Saturday, March 7, 2015 at 5:26am

Math
In a group of girls, 20 play volleyball, 21 play badminton and 18 play table tennis; 7 play volleyball only; 9 play badminton only; 6 play volleyball and badminton only and 2 play badminton and table-tennis only. a)How many play all three games? b)How many play volleyball and ...
Saturday, March 7, 2015 at 5:18am

Math
Find the first five terms: a sub 1 = 4 and a sub n = 0.5a sub (n - 1) + 1 Are they 3, 2.5, 2.25, 2.125, and 2.0625?
Saturday, March 7, 2015 at 12:46am

math
A retailer planned to buy some computers form a wholesaler for a total of shilling 1,800,000. Before the retailer could buy the computers the price per unit was reduced by shilling 4,000. This reduction in price enabled the retailer to buy five more computers using the same ...
Saturday, March 7, 2015 at 12:38am

math
Two towns P and Q are 400 km apart. A bus left for P and Q. It stopped at Q for one hour and then started the return to P. one hour after the departure of the bus from P, a trail also heading for Q left P. the trailer met the returning bus ¾ of the way from P to Q. they...
Saturday, March 7, 2015 at 12:33am

math
A cylindrical piece of wood of radius 4.2 cm and length 150 cm is cut length rise into two equal pieces. Calculate the surface area of one piece
Saturday, March 7, 2015 at 12:09am

math
Point T is the midpoint of a straight line AB. Given the position vectors of A and T are i - j + k and 2i + 1 ½ k respectively, find the position vector of B in terms of i, and k
Saturday, March 7, 2015 at 12:04am

math
A town N is 340 km due west of town G and town K is west of town N. A helicopter Zebra left G for K at 9.00 a.m. Another helicopter Buffalo left N for K at 11.00 a.m. Helicopter Buffalo traveled at an average speed of 20 km/h faster than Zebra. If both helicopters reached K at...
Friday, March 6, 2015 at 11:47pm

Math
The length and breadth of a rectangular paper were measured to be the nearest centimeter and found to be 18 cm and 12 cm respectively. Find the percentage error in its perimeter.
Friday, March 6, 2015 at 11:43pm

math
The sum of two numbers is 300 and the two numbers have a ratio of 20:10. Find the larger number.
Friday, March 6, 2015 at 11:06pm

Math Help!
The box-and-whisker plots show data for the test scores of four groups of students in the same class. Which plot represents data with the greatest range or scores? A. The lowest value is numberd 30, the lower quartile is numberd at 40, the median is numberd at 55, the upper ...
Friday, March 6, 2015 at 10:30pm

math
When the measures of the angles of a triangle are placed in order, the difference between the middle angle and smallest angle is equal to the difference between the middle angle and largest angle. If one of the angles of the triangle has measure 23 degrees, then what is the ...
Friday, March 6, 2015 at 10:20pm

math
A particle moves along the x-axis so that at any time t, measured in seconds, its position is given by s(t)equals = 5cos(t) minus- sin(3t), measured in feet. What is the acceleration of the particle at time t =equals π seconds?
Friday, March 6, 2015 at 10:10pm

Math
A phone tree is used to let committee members know that a meeting is cancelled. The committee chair calls 5 people . Those 5 people each call 5 people and those additional people each call 5 people. How many members have been called?
Friday, March 6, 2015 at 10:09pm

math/statistics
The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation,letting the first variable be the independent (x) variable. Find the best predicated time of the interval after an eruption given that the current ...
Friday, March 6, 2015 at 8:14pm

SAT Math
9, 13, 17, 21, ... In the sequence above, each term after the first is 4 greater than the previous term. What is the difference between the 105th term and the 99th term? I have no idea how to solve this problem
Friday, March 6, 2015 at 7:39pm

Math
Directions: Solve this system of linear equations. Write the final answer as an ordered pair (x, y, z). 2x + 4y - z = 7 2x - 4y + 2z = -6 x + 4y + z = 0
Friday, March 6, 2015 at 7:32pm

Math
What are the domain and range of the function {(0, 2), (-2, 4), (2, 8), (1, 6), (-5, 0)}? 1. Domain: {2, 4, 8, 1, -5}; Range: {0, -2, 6} 2. Domain: {0, -2, 6}; Range: {2, 4, 8, 1, -5} 3. Domain: {2, 4, 8, 6, 0}; Range: {0, -2, 2, 1, -5} 4. Domain: {0, -2, 2, 1, -5}; Range: {2...
Friday, March 6, 2015 at 7:18pm

math
A truck leaves going 45 mph. One hour later a car going 60 mph leaves in same direction. How long will it take for the car to catch the truck.
Friday, March 6, 2015 at 7:14pm

math
Sales exercised by stretching and jogging 5 days last week. a.He stretches for a total of 25 minutes during the week. b.He jogged for an equal number of minutes each of the 5 days. c.He exercised for a total of 240 minutes. Elena also exercised by stretching and jogging 5 days...
Friday, March 6, 2015 at 7:12pm

Math
What are the domain and range of the function {(0, 2), (-2, 4), (2, 8), (1, 6), (-5, 0)}? 1. Domain: {2, 4, 8, 1, -5}; Range: {0, -2, 6} 2. Domain: {0, -2, 6}; Range: {2, 4, 8, 1, -5} 3. Domain: {2, 4, 8, 6, 0}; Range: {0, -2, 2, 1, -5} 4. Domain: {0, -2, 2, 1, -5}; Range: {2...
Friday, March 6, 2015 at 7:09pm

math, physics
The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) equals 60t minus - 1.5t^2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop?
Friday, March 6, 2015 at 6:11pm

MaTH
the school's track team ran the 220 relay in 7 minutes 46 seconds at their first track meet. The next meet, their time was 42 seconds shorter. At the next, their improvement was twice as great. What was their total running time at the last met?
Friday, March 6, 2015 at 5:22pm

math
A and B farm A produces milk with 3 ½ percent fat and farm B produces milk with 4 ¾ percent fat. (a) Determine (i) The total mass fat in 50 kg milk from farm A and 30 kg of milk from farm B (ii) The percentage of fat in a mixture of 50 kg of milk from A and 30 kg...
Friday, March 6, 2015 at 5:22pm

math
Would the answer be 2000 to this? with 1,200 i got 4,000? If 600cm^2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cubic centimeters.
Friday, March 6, 2015 at 4:53pm

math
What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y equals 27 minus x^2?
Friday, March 6, 2015 at 4:25pm

Math Check
Hi! Can someone check these two answers? Thanks! Directions: Find the correct number of solutions for the following system of equations. 1.) 5x - 3y + 2z = 3 2x + 4y-z = 7 x - 11y + 4z = 3 2.) 2x + y- 3z = 4 4x + 2z = 10 -2x + 3y - 13z = -8 A.) One Solution B.) Infinitely Many...
Friday, March 6, 2015 at 4:23pm

Math
What is the solution of 1/3 + 3/10 + 1/5? Hi, I don't really know how to add fractions very well yet. Can you explain how to add these 3 fractions? Thanks so much
Friday, March 6, 2015 at 3:40pm

Math
a) Write an expression in terms of n and m for the area of the top of the solid region being drilled at the right. Use 3.14 for x. Factor your expression. b) Find the area of the solid region in n=10 in. and m=3 in.
Friday, March 6, 2015 at 2:32pm

Math
All vertical and horizontal cross sections of any one cube are all the same size and shape. What about vertical and horizontal cross sections of a pyramid? Are they all the same size? Are they all the same shape? Discuss why or why not.
Friday, March 6, 2015 at 2:32pm

math
The third,sixth and seventh terms of a geometric progression(whose common ratio is neither 0 nor 1) are in arithmetic progression. Prove dat d sum of d first three is equal to d fourth term
Friday, March 6, 2015 at 2:06pm

Math
If 1,200 cm^2 of material is available to make a box with a square base and an open top, find the maximum volume of the box in cubic centimeters. Answer to the nearest cubic centimeter.
Friday, March 6, 2015 at 12:57pm

MATH
You buy 3 pairs of pants at an original cost of $24.99 and the sale is buy 1 get the 2nd pair half off. The sales tax is 6%. How much do you pay in total for the pants? $39.73 $79.47 $52.98 my answer?? $66.23
Friday, March 6, 2015 at 12:10pm

Math
1.) Solve this system of linear equations. Write the final answer as an ordered pair (x, y, -3). x - y + 2z = 22 3y - 8z = -9 z = -3 2.) Solve this system of linear equations. Write the final answer as an ordered pair (x, y, z). 2x + 4y + z = 1 x - 2y - 3z = 2 x + y - z = -1
Friday, March 6, 2015 at 11:52am

Math
Please help. I have the answers to these problems but I'd like to know how to solve it step by step. 1. Air is being pumped into a spherical balloon at the rate of 1.754 cubic centimeters per second. The balloon maintains a spherical shape throughout. How fast is the ...
Friday, March 6, 2015 at 10:18am

Business Math GBM 200
300 pounds of oranges were purchased at $0.24 per pound. The desired markup is 50% based on selling price, but 21% spoilage is expected. What should the selling price per pound be? (Round your answer to the nearest cent)
Friday, March 6, 2015 at 6:37am

math
A pack of 6 pens cost $30. A pack of 8 files cost $24. A student wants to buy an equal number of pens and files. What is the least amount that the student must pay?
Friday, March 6, 2015 at 2:38am

5th grade math
Kallisto built a rectangular sign that measured 2 3/4 feet in length by 1 1/2 feet in width. To find the area, multiply the length and width. what is the area of the sign in square feet? Write an equation to solve. 2 3/4 1 1/2 +2 3/4 1 1/2 =11/1/2 ------ ----- 4 6/4= 2 2/2=3
Thursday, March 5, 2015 at 11:26pm

5th grade math
It takes Marty 1 1/4 hours to get ready for school. If 1/5 of that time is used to shower, what fraction of an hour does it take him to shower? 1/4answer
Thursday, March 5, 2015 at 11:18pm

Math
At middle Avenue school,1/30 of students are on the track team. Of the track coach offered to buy pizza or subs for everyone 3/5 ordered pizza. What fraction of the students at middle Avenue school ate pizza? 1/30 divided by 3/5,1/30x5/3=5/90=1/18
Thursday, March 5, 2015 at 11:11pm

Math
1/3divided by 4= 12 I made a model that has 4 sections and each space has 3 1third sections
Thursday, March 5, 2015 at 11:05pm

Math (PLEASE HELP)
Can someone please help me do the following problems? I don't care for the answers, I just wanna know how to do this stuff. I am always forgetting how to do certain things in math. 1)ABCD is a rhombus with diagonals intersecting at E. If m<ABC= 4m<BAD, find m<EBC...
Thursday, March 5, 2015 at 10:36pm

Math
When dropped on a hard surface, a rubber ball takes a series of bounces, each one about 4/5 as high as the preceding one. If the rubber ball is dropped from a height of 20 ft, what is the approximate distance the ball travels before coming to rest? Please explain how you got ...
Thursday, March 5, 2015 at 10:36pm

Math
is this statement always, sometimes, or never true: the absolute value of a positive integer is a negative integer. i think never am i correct
Thursday, March 5, 2015 at 10:21pm

math
You have exactly $100 to spend. You must get 100 animals. The chicks cost $0.50 each. The pigs cost $2.00 each. The sheep cost $5.00 each you must get some of each animals. How many of each animals can you get.
Thursday, March 5, 2015 at 9:44pm

Math
The box-and-whisker plots show data for the test scores of four groups of students in the same class. Which plot represents data with the greatest range or scores? A. The lowest value is numberd 30, the lower quartile is numberd at 40, the median is numberd at 55, the upper ...
Thursday, March 5, 2015 at 8:12pm

math
Spin both spinners. add the numbers you spun. what sums are possible?
Thursday, March 5, 2015 at 7:30pm

math
Explain why an account balance less than -40 dollars represents a debt greater than 40 dollars.
Thursday, March 5, 2015 at 7:23pm

math
A student athlete runs 3 1_ 3 miles in 30 minutes. A professional runner can run 1 1_ 4 times as far in 30 minutes. How far can the professional runner run in 30 minutes?
Thursday, March 5, 2015 at 7:22pm

Math
If 9 red balloons and 6 blue balloons are to be distributed to 4 children, how many distributions are possible if every child must receive a balloon of each color?
Thursday, March 5, 2015 at 7:12pm

math
You read 7 pages in 3 minutes How many pages can you read for 6 hours how would you put this in a numeric response
Thursday, March 5, 2015 at 6:26pm

math 5th grade
if you have a drawer with 10 black socks and 8 white socks, what is the probability that you would reach in and choose a white sock without looking?
Thursday, March 5, 2015 at 6:26pm

using skills
Which is inappropriate as a section of the parent newsletter? A. Suggestions for supportive home activities B. The problems of individual children C. Special field trips and other special activities D. Math and science units that are currently being experienced my answer is b.
Thursday, March 5, 2015 at 6:23pm

math
i'm working on this question and honestly I have tries but I don't understanding anything about the question, can someone please HELP me? I have been posted this question and hoping for someone can help me please! For the following scenario, develop an equation and a ...
Thursday, March 5, 2015 at 6:19pm

math
Jay has 6,200 beads. He is making bracelets with 9 beads each. How many bracelets can he make? How many beads will be left. I know the answer to the first question, but i don't know the second.
Thursday, March 5, 2015 at 6:04pm

Math
23rds plus 93
Thursday, March 5, 2015 at 4:57pm

math
if x=-2 and y=2, which of the following is false: (a) (x) is greater than 1 (y) (b) (x) = (y) (c) (y) is less than 1 (d) (x) = y
Thursday, March 5, 2015 at 4:42pm

Math
A farmer has 2,400 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence along the river. Write the function that will produce the largest area if x is the short side of the rectangle.
Thursday, March 5, 2015 at 4:41pm

Math
What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y equals= 12 minus x^2?
Thursday, March 5, 2015 at 4:41pm

Math
provide one of the two positive integers whose sum is 200 and whose product is a maximum.
Thursday, March 5, 2015 at 4:39pm

Math
What is this written in postfix notation: !(!((5-10)*(4-(9/2)) > 60)-(((5*7)/(4/(5+3)))=15))<((4-3)=1)​
Thursday, March 5, 2015 at 4:30pm

math: algebra
I need help checking my answer. I wasn't sure if 8 and 8 were both side lenegth's or if 22 is the slant height but I think it is got kind of confused there also wasn't sure how I was suppose to solve it but I sloved the problem how I though it was suppose to be ...
Thursday, March 5, 2015 at 4:30pm

math
If Someone estimatesthat their book bag weighs 8.5 pounds and actually weighs 11 pounds what is the percentage error
Thursday, March 5, 2015 at 4:16pm

Math
Which statment is true? A right triangle alwas has two acute angles.
Thursday, March 5, 2015 at 4:00pm

math
Thank you Ms. Sue. I need help with this problem. The surface of Jupiter is made of colorful clouds created by various chemicals in the atmosphere. The temperature at the top of the clouds is -230 degrees F. The temperature below the clouds is 70 degrees F. Which temperature ...
Thursday, March 5, 2015 at 4:00pm

Math
evaluate this expression: (31) - (-1)=
Thursday, March 5, 2015 at 3:50pm

Math (Asap)
You are building a concrete deck around a rectangular swimming pool. The pool is three times as long as it is wide. The deck will have a constant width of four feet. In order to have enough concrete, you have calculated the area of the deck to be 832 square feet. What are the ...
Thursday, March 5, 2015 at 3:50pm

Math
If neon has a melting point of -248 and hydrogen a melting point of -259. Is the melting point of neon greater or less than hydrogen's. I think greater than. Am I correct?
Thursday, March 5, 2015 at 3:47pm

math
lilt saw a jelly fish at 6 feet below sea level. She saw a blue fish at 10 feet below sea level. What is the distance between the blue fish and the jelly fish? Is the answer -4 feet?
Thursday, March 5, 2015 at 3:41pm

math
Aaron earns $1.50 for every video game he sells. When he sells one carton of 30 video games, he earns an additional $10. What is the minimum number of video games he has to sell in order to earn $450?
Thursday, March 5, 2015 at 3:30pm

math
At a school camp, 30% of the students were boys. When 87 students left the camp after the second day, half the original number of boys were left behind, and the number of girls decreased by 20%. How many girls were at the camp in the beginning?
Thursday, March 5, 2015 at 3:29pm

Math
Find the first five terms: a sub n = 2^n - 5 -3, -1, 3, 11, 27?
Thursday, March 5, 2015 at 3:26pm

Math
Make a box-and-whisker plot of the data. 21,21,22,20,13,13,27,24 A. The lowest value is numberd 13, the lower quartile is numberd 15, the median is numberd 21, the upper quartile is numberd 23, the highest value is numberd 27. B. The lowest value is numberd 13, the lower ...
Thursday, March 5, 2015 at 3:23pm

math
solve. 4r= -36
Thursday, March 5, 2015 at 2:39pm

math
Two towns P and Q are 400 km apart. A bus left for P and Q. It stopped at Q for one hour and then started the return to P. one hour after the departure of the bus from P, a trail also heading for Q left P. the trailer met the returning bus ¾ of the way from P to Q. they...
Thursday, March 5, 2015 at 1:38pm

math- urgent help
For the following scenario, develop an equation and a set of 5 ordered pairs for equation: 1. the amount a sales person earns is a flat rate plus commission. 2. the volume of fuel in a snowmobiles tank related the distance travelled. 3. the cost of a hotel room is a flat fee ...
Thursday, March 5, 2015 at 1:04pm

using skills
Valuable pictorial math materials are A. blocks. B. buttons. C. flash cards. D. picture books. c. is my answer.
Thursday, March 5, 2015 at 12:10pm

math
I know everyone is busy but could u please take a sec for this question???? Thank you in advance. What is the length of the diagonal for the rectangular prism to the nearest whole unit? LENGTH:12 cm WIDTH:4 cm HEIGHT:9 cm A.16 cm B.15 cm C.13 cm D.10 cm i thinks its c. i think...
Thursday, March 5, 2015 at 12:01pm

Math, geometry
A porch has the shape of a semicircle with a diameter of 7 ft. What is the approximate area of the porch, rounded to the nearest square foot? Use 3.14 to approximate pi. Help!
Thursday, March 5, 2015 at 11:57am

math
A map scale indicates that 1 inch equals 175 miles. The distance between two points on the map measures 5 3/4 inches. What is the actual distance between those two points in kilometers? (1 mile = 1.61 kilometers.)
Thursday, March 5, 2015 at 11:14am

math
first multiply first 2 digits, wrire answer side by then multiply1st and 3rd digits write answer next to earlier answer. Then add both answers and minus middle digit of the question
Thursday, March 5, 2015 at 9:20am

math
Solve for X and Y: 2^x=8^1+y And (x+2y)(x-y)=0
Thursday, March 5, 2015 at 8:24am

math
A cyclist covers his outward journey downhill at 24mph. His return journey, over exactly the same distance uphill, is covered at only 12mph. What is the cyclist's average speed over the entire journey?
Thursday, March 5, 2015 at 5:21am

math
A rectangle measuring 7cm by 4cm is enlarged by a ratio of 2:1.what is the area of the enlarged rectangle.
Thursday, March 5, 2015 at 1:46am

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