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July 24, 2014

Homework Help: Math

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Recent Math Questions

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math
c=2πr c= 7.12 pi= 3.14 find value of r -rounded to 2 decimal points
Wednesday, May 21, 2014 at 11:11am

Math
Suppose you spin a spinner that is equally likely to land on any one of the numbers from 1 to 8. Which event has the same probability as P(not 2 or 3)?
Wednesday, May 21, 2014 at 11:10am

math
A construction company is laying natural gas Piping: pipeline. Several sections of pipe have been laid in a pile at the construction site. There are 12 sections of pipe in the bottom row of the pile. Each row has one less pipe than the row below it. There are 8 rows of pipe.
Wednesday, May 21, 2014 at 11:06am

Math
identify the vertex and the length of the transverse axis is 10 units, and the length of the conjugate axis of the hyperbola x^2/25-y^2/16=1
Wednesday, May 21, 2014 at 10:54am

math
If a plant has a linear growth rate and 1 day after planting is 2x+4 and day four is 4x+8 Wgat is the growth rate?
Wednesday, May 21, 2014 at 10:43am

MATH
HOW DO YOU WRITE 21 MAY 2014 IN 5 LETTERS WITHOUT USING NUMBERS
Wednesday, May 21, 2014 at 10:10am

English
1. Do you sleep less than 5 hours a day? 2. I like you less than him. 3. I ate fish less than fruit. 4. I ordered fried chicken less than noodles. 5. I player soccer less than baseball. 6. I studied math less than English. 7. I helped Mother less than my brother. 8. I worked ...
Wednesday, May 21, 2014 at 10:04am

math
1 identify the coordinates of the vertex and the equation of the axis of summetry of the parabola x=2 (y-1)^2+3 A. The vertex of the parabola is (1,3), and the equation of the axis of symmetry B. the vertex of the parabola is (3,1) and the equation of the axis of symmetry c. ...
Wednesday, May 21, 2014 at 9:45am

Math
determine the midpoint of the segment whose endpoints are a(7 3 -4) and b(-3 1 0)
Wednesday, May 21, 2014 at 9:28am

Math
1/a+1/b+1/c=1/2 a≧b≧​c Please help me The math question
Wednesday, May 21, 2014 at 9:21am

Math
identify the center and radius of the circle with the equation (x+5)^2+(y-2)^2=9 A. this equation represents a circle with center (5,-2) and a radius of 3 units B. This equation represents a circle with center (-5,2) and a radius of 3 units C. this equation represents a circle...
Wednesday, May 21, 2014 at 8:22am

Math
identify the center and radius of the circle with the equation (x+5)^2+(y-2)^2=9 A. this equation represents a circle with center (5,-2) and a radius of 3 units B. This equation represents a circle with center (-5,2) and a radius of 3 units C. this equation represents a circle...
Wednesday, May 21, 2014 at 8:21am

Math,english,lo,ancilury,art&culture,setswana
Simplify the following ratios.6:72
Wednesday, May 21, 2014 at 8:07am

Math 8th Grade!!!!
27 - (-9) (-2) ÷ 3 * (-4) - 0 - 33 - (-39)
Wednesday, May 21, 2014 at 6:56am

math 8th grade
-15 - (3-7) + 6 * (-2) + (-8) - 9
Wednesday, May 21, 2014 at 6:49am

math
-15 - (3-7) + 6 * (-2) + (-8) - 9
Wednesday, May 21, 2014 at 6:48am

Math 8th gr.
27 - (-9) (-2) ÷ 3 * (-4) - 0 - 33 - (-39)
Wednesday, May 21, 2014 at 6:48am

MATH
There are 8 boys, 12middle schoolers and 8 girls. what is the ratio of girls to boys?16/12=4:3 divide both sides by 4
Wednesday, May 21, 2014 at 5:57am

fifth grade math
susan picked a watermelon that weighed 8/15 lb. larry a watermelon that weigh 1/4 as much as Susans. how muchdid larrys weigh
Wednesday, May 21, 2014 at 1:49am

math test
A new cruise ship line has just launched 3 new ships: the Pacific, the Caribbean, and the Mediterranean. The Caribbean has 32 more rooms then the Pacific. The Mediterranean has 38 fewer rooms than FOUR times the number of rooms on the Pacific. Find the number of rooms for each...
Wednesday, May 21, 2014 at 12:36am

Math 8th gr.
27 - (-9) (-2) ÷ 3 * (-4) - 0 - 33 - (-39)
Tuesday, May 20, 2014 at 11:21pm

math
-15 - (3-7) + 6 * (-2) + (-8) - 9
Tuesday, May 20, 2014 at 11:19pm

math
draw a number line to show that the fractions are equivalent 3/4=6/8 and 1/4=2/8
Tuesday, May 20, 2014 at 10:54pm

math
log5(3x+9)-2
Tuesday, May 20, 2014 at 10:47pm

math
how you can use a number line to show that 3/6 and 1/2 are equivalent fractions
Tuesday, May 20, 2014 at 10:22pm

math
Fun & Games is having a sale. There is a special price for games sold in packs. Pack A cost $ 41.70 and includes Feisty Fox, Dolphin Derby, and Rat Race. Pack B cost $ 37.95 and includes Rat race and two Feisty Fox games. Pack C cost $ 26.75 and includes Dolphin Derby and ...
Tuesday, May 20, 2014 at 10:11pm

Math
I'm trying to make a slope on graph paper, I had to make a figure with six sides and this is my vertexes. A=(4,-8) B=(9,-10) C=(15,-7) D=(13,-4)E=(7,-6) F=(4,-4) My segment is A and B my slope is -8-(-10)/4-9=-8+10/4-9=2/-5 What I get as my answer is -0.4 is that an ...
Tuesday, May 20, 2014 at 10:01pm

math
-3T+8=20
Tuesday, May 20, 2014 at 9:04pm

Math
You want to determine the average number of songs people keep on their MP3 players. You want to collect data from a random sample of at least 300. Which of these would be the most valid method of collecting data? a. Survey students coming in and out of your school cafeteria. b...
Tuesday, May 20, 2014 at 9:03pm

Math
A biologist has determined that a particular osprey has a 70% chance of catching a fish on any given day. Carry out a simulation of 20 trials using the random number table below to find the probability that the osprey will actually catch a fish on all of the next three days. ...
Tuesday, May 20, 2014 at 8:12pm

MATH HW HELP!!
The rate of bacteria growth in a laboratory experiment was at 16% per hour. If this experiment is repeated and begins with 5 grams of bacteria, how much bacteria should be expected after 12 hours? Round to the nearest tenth of a gram.
Tuesday, May 20, 2014 at 7:40pm

MATH HW HELP!!
As a savings plan for college, when their son Bob was born, the Wilburs deposited $10,000 in an account paying 8% compounded annually. How much will the account be worth when Bob is 18 years old?
Tuesday, May 20, 2014 at 7:24pm

math
A new cruise ship line has just launched 3 new ships: the Pacific, the Caribbean, and the Mediterranean. The Caribbean has 32 more rooms then the Pacific. The Mediterranean has 38 fewer rooms than FOUR times the number of rooms on the Pacific. Find the number of rooms for each...
Tuesday, May 20, 2014 at 7:20pm

MATH HW HELP!!
Mike Gioulis would like to have $25,000 in 4 years to pay off a balloon payment on his business mortgage. His money market account is paying 1.825% compounded daily. Disregarding leap years, how much money must Mike put in his account now to achieve his goal? Round to the ...
Tuesday, May 20, 2014 at 7:12pm

math
The value of an uncirculated mint state-65 1950 jefferson nickle minted in denver is 4/3 the value a 1945 nickle minted in philadelphia is similar condition. together the total value of the two coins is $21.00
Tuesday, May 20, 2014 at 7:10pm

MATH HW HELP!!
stuart daniels estimates that he will need 25,000 to set up a small business in 7 years. how much must Stuart invest now at 12%interest compounded quarterly to achieve his goal?
Tuesday, May 20, 2014 at 7:09pm

math homework help
Pinnacle Homes, a real estate development company, is planning to build five homes, each costing $125,000, in 2.5 years. The Galaxy Bank pays 6% interest compounded semiannually. How much should the company invest now to have sufficient funds to build the homes in the future?
Tuesday, May 20, 2014 at 7:08pm

Math
I am a parent of a seventh grader enrolled in k12 and neither of us are doing so great in the math department. is there a way to get the answer key for k12
Tuesday, May 20, 2014 at 7:00pm

math homework help
motorcycle company invested 250,000 at 4.5% compounded monthly to be used for the expansion of their manufacturing facilities how much will available for the project in 3.5 years?
Tuesday, May 20, 2014 at 6:49pm

math
TEN PEOPLE PLAY CARDS STARTING ON MAY 27TH,2014, FOR 27 TUESDAYS, ENDING ON NOV. 25TH2014. HOW TO GIVE EQUAL PLAYING TIME TO ALL WHEN ONLY 8 PEOPLE ARE NEEDED FOR EACH TUESDAY.?
Tuesday, May 20, 2014 at 6:37pm

Math: Linear Equation
I have not learned this yet in class and I am stuck on this homework problem. Graph the linear equation by using a table of solutions. 3x-4y=12
Tuesday, May 20, 2014 at 6:06pm

Math
This seems like it would be a simple math problem but...... How do you create an equation and calculate the difference between 2 birthdays, putting the older person's on top? 5/17/1987 and 10/28/2002 PLEASE HELP ME!
Tuesday, May 20, 2014 at 4:54pm

Math
In math, if you are tracking your actual weight on a month to month basis, what kind of slope would you expect (negative or positive), remembering that goal of a diet is to lose weight.
Tuesday, May 20, 2014 at 4:40pm

math
simplify. what are the excluded values? x^2+6x+9/5x+15
Tuesday, May 20, 2014 at 4:06pm

math help !
1. A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. a)3.8 ft3 b)60 ft3 c)15 ft3 d)10.4 ft3 2.A pyramid has a height of 5 in. and a surface area of 90 in2. Find ...
Tuesday, May 20, 2014 at 3:50pm

math
The ratio of steve's age to tims age is 6:7. If steve is 84, how old is tim
Tuesday, May 20, 2014 at 3:39pm

Math Finance
We have two independent investments. Each of them may have a 1% chance of a loss of 10 million dollars, a 2% chance of a loss of 5 million, a 3% chance of a loss of 1 million, and a 94% chance of a profit of 1 million. (Express all the following answers in million dollars: 100...
Tuesday, May 20, 2014 at 3:38pm

Math help plz
The human endocrine system is made up of which of the following structures? (1 point) vessels receptors glands chambers 2. Which of the following best describes the function of the endocrine system? (1 point) It secretes chemical messengers that travel through the blood to ...
Tuesday, May 20, 2014 at 3:25pm

Math
I need help on my math question. can someone please explain the process? You have $5 for lunch. You bought a turkey sandwich for $2.25. Write and solve an inequality to show how much more you can spend.
Tuesday, May 20, 2014 at 3:22pm

Math
This seems like it would be a simple math problem but...... How do you create an equation and calculate the difference between 2 birthdays, putting the older person's on top? 5/17/1987 and 10/28/2002 PLEASE HELP ME! hank You
Tuesday, May 20, 2014 at 3:14pm

math help
Identify the center and radius or the circle with the equation. (y-5)^2+(Y+8^2=25
Tuesday, May 20, 2014 at 3:10pm

math
no more than 12 people can enter the haunted house every 10 minutes. which inequality represent the situation? A. a < 12 B. a <_ 12 there's a line under neater < C. a > 12 D. a _> 12 there's a line under neath >
Tuesday, May 20, 2014 at 3:03pm

math
identify the center and radius or the circle with the equation (x+2)^2+(y-3)^2=4
Tuesday, May 20, 2014 at 2:58pm

Math Probability
Let X and Y be independent random variables, each uniformly distributed on the interval [0,2]. Find the mean and variance of XY. E[XY]=   var[XY]= Find the probability that XY≥1. Enter a numerical answer. P(XY≥1)=
Tuesday, May 20, 2014 at 2:47pm

Math
I need help on a math question. can someone walk me through the process? 12 + 4m = 24
Tuesday, May 20, 2014 at 2:22pm

math--check my answer
stem-and-leaf plot 3| 7 8 9 4| 1 3 7 5| 2 4 37, 38, 39, 41, 43, 47, 52, 54 *** 73, 83, 93, 14, 34, 74, 25, 45 7, 8, 9, 1, 3, 7, 2, 4 37, 38, 39, 14, 34, 74, 25, 45 =
Tuesday, May 20, 2014 at 1:30pm

trigonomertry math
If cos A=1/3 and tan A<0,determine the value of 2sin A+tan A without the use of a calculator
Tuesday, May 20, 2014 at 1:15pm

Math
What data are represented by the stem-and-leaf plot below? stem-and-leaf plot 3| 7 8 9 4| 1 3 7 5| 2 4 37, 38, 39, 41, 43, 47, 52, 54 73, 83, 93, 14, 34, 74, 25, 45 7, 8, 9, 1, 3, 7, 2, 4 37, 38, 39, 14, 34, 74, 25, 45
Tuesday, May 20, 2014 at 12:17pm

Math help plz
19, 19, 14, 14, 16, 19, 19, 16, 16, 15, 17, 16, 17, 16, 15, 14, 15, 15, 17, 14, 16, 15 2. Find the mean for the data. If necessary, round to the nearest tenth. 17.5 16.5 17.1 16.1 3. Find the median for the data. 17 16 15 14 4. Find the mode for the data. 14 15 16 17
Tuesday, May 20, 2014 at 11:51am

Math
This seems like it would be a simple math problem but...... How do you create an equation and calculate the difference between 2 birthdays, putting the older person's on top? 5/17/1987 and 10/28/2002
Tuesday, May 20, 2014 at 11:18am

math
if the diagonals of a quadrilateral bisect at 90degree ,then is it a square?
Tuesday, May 20, 2014 at 11:10am

Math
Sam Sounds received a $320 discount loan to purchase a stereo. The loan was offered at 16% for 90 days. Find the interest in dollars and the proceeds for the following problem.
Tuesday, May 20, 2014 at 10:15am

math
A unicycle travels 50 feet. If the radius of the tire is 24 INCHES, how many times does the tire rotate?
Tuesday, May 20, 2014 at 9:39am

math
Their car gets 30 miles per gallon in gas mileage. They are traveling for seven hours at a rate of 55 miles per hour. Assuming no stops, how much gas will they need to complete their seven hour trip?
Tuesday, May 20, 2014 at 9:00am

Math
19, 19, 14, 14, 16, 19, 19, 16, 16, 15, 17, 16, 17, 16, 15, 14, 15, 15, 17, 14, 16, 15 2. Find the mean for the data. If necessary, round to the nearest tenth. 17.5 16.5 17.1 16.1 *** 3. Find the median for the data. 17 16 15 14 4. Find the mode for the data. 14 15 16 17
Tuesday, May 20, 2014 at 2:08am

Algebra, math,
(a^6-b^6)/(a^4+a^2*b^2+b^4) simplify show work
Tuesday, May 20, 2014 at 1:40am

Algebra, math,
A helicopter can fly 120 mph in still air. When flying to a town 700 miles away and returning the helicopter has to fly with a tailwind of x mph when going to the town and with a head wind of x mph when returning. If the return flight takes 2 hours more than the flight to the ...
Tuesday, May 20, 2014 at 1:38am

Math
ac^2-a^3-a^2b+ab^2+b^2-bc^2 I don't understand how to factor it.
Tuesday, May 20, 2014 at 12:50am

Math
I need two factors that their product equals 16848. None of the digits can be more than 5. Each factor is 3 digits long. I have been trying for hours, can someone please help!
Tuesday, May 20, 2014 at 12:26am

math(urgent)
A 7%,6O day note was discounted at 15 days before the maturity date. If the discount rate was 5.5% and the proceeds received were $ 997,77,find a)the amount of discount that was charged b)the discount date if maturity date of the note is 26 october 1991 c)face value a) 997,77...
Monday, May 19, 2014 at 11:43pm

math
9.A 10%,100-day note was dated 20 september 1992.the maturity value of the note was $3083.33.If the note was discounted on 17 november 1992 at 12%,FIND i) the maturity date of the note = 29 december 1992 ii)the face value of the note $3083.33 = (1+0.1(100/360) = 1.0278 = 3083....
Monday, May 19, 2014 at 11:42pm

Math
If you solve this you are officially amazing! "The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. Find the length of the median of the trapezoid."
Monday, May 19, 2014 at 11:31pm

math
Austin spent an equal amount of money on 5 DVDs and 7 CDs. Each DVD cost 30 cents more than each CD. How much did Austin spend altogether?
Monday, May 19, 2014 at 11:31pm

algebra
A textbook store sold a combined total of 205history and math textbooks in a week. The number of history textbooks sold was 87more than the number of math textbooks sold. How many textbooks of each type were sold?
Monday, May 19, 2014 at 11:27pm

Math
Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -3x^2 + 9x + 3.
Monday, May 19, 2014 at 11:11pm

Math
1,11,21,2111,111221,?,? what are the next two numbers of this sequence?
Monday, May 19, 2014 at 10:40pm

math
in an image the slanted rectangle starts at 0 over right 2 spaces. Then 2 more over to 4 up to 3 then left 2 and back to 0.what would it look after a rotation of 90 degrees about 0. a)rectangle goes to the left in quadrant 2. b)rectangle goes down in the 4 quadrant. c)...
Monday, May 19, 2014 at 7:51pm

MATH HELP ASAP
Please Help!! Louis is planning to mow a rectangular yard that is 20 feet longer than it wide. He wants to find its width if its area is 1125 square feet. Which equation models this problem? A. 20w2 = 1125 B. w2 + 20w = 1125 C. w2 – 20w = 1125 D. w + 20w = 1125
Monday, May 19, 2014 at 7:33pm

math
Use the binomialsl theorem to find the binomial binomialsion of the expression (x-3)^5
Monday, May 19, 2014 at 7:28pm

math
which figure has rotational symmetry? A)a square b)a letter T c)a pentagon d)an arrow Is it a (A)a square?
Monday, May 19, 2014 at 7:16pm

Math
Top ten scores on a quiz in two classes are listed below Class A 100,100,100,90,95,85,92,98,92,88 class B 100,100,98,95,95,96,95,92,81,88 which statement is true concerning the data a. the mode is the same for both classes b. the range is the same for both classes c. the mean ...
Monday, May 19, 2014 at 7:14pm

math
The test scores for a math class are shown below 83,85,82,93,83,84,95,87,86,94 what is the standard deviation of the data set?
Monday, May 19, 2014 at 7:10pm

math
there are 4 blue tile,s 3 yellow tiles, 5 red tiles, and 2 green tiles. he draws a tile replaces it, and draws another tile. what is the probability he will draw a blue tile on both
Monday, May 19, 2014 at 7:07pm

MATH 1 QUESTION VERY HARD PLS HELP ASAP!!!!!
PLEASE HELP ASAP!!!!! i dont know! Explain how to write a function rule from the table below. Then write a function rule. x: 2 4 6 y: 1 0 –1 i know its so simple but im having so much trouble!!!:( pls help!
Monday, May 19, 2014 at 6:55pm

math
Find the coordinates of the image of point R(3,-5) rotated 180° about the origin. A)(-3,5) B)(-5,-3) C)(5,3) D)(3,-5) Please help me I think its A
Monday, May 19, 2014 at 6:46pm

MATH
The shape is an equilateral triangle. a)Does the shape have rotational symmetry? If so,identify the angle of rotation. b)Does the shape tessellate? I dont know what to do for the first part.But I think part B is yes because it has no overlaps or gaps. Please help
Monday, May 19, 2014 at 6:37pm

math
In triangle PQR, m<P=53 degrees, PQ=7.4, and PR=9.6. What is m<R to the nearest degree
Monday, May 19, 2014 at 6:31pm

math
what is tan 3pi/4
Monday, May 19, 2014 at 6:08pm

Math
Find the period and the amplitude of the periodic function y=3cos 4x
Monday, May 19, 2014 at 6:03pm

math help
Which is equivalent to 14x-3y+2z=100 -17x+8y+10z=11 -3+13y+29z=81
Monday, May 19, 2014 at 6:01pm

math help
In trisngle RST, angle S is a right angle and csc R=5/3. TWhat is tan T?
Monday, May 19, 2014 at 5:54pm

math help
In trisngle RST, angle S is a right angle and csc R=5/3. T=What is tan T?
Monday, May 19, 2014 at 5:54pm

Algebra 2
the test score for a math class are shown below. 81,84,82,93,81,85,95,89,86,94 what are the mean, median, and mode of the data set?
Monday, May 19, 2014 at 5:50pm

math
I don't understand how to multiply rational expressions. My math book isn't helping at all.
Monday, May 19, 2014 at 5:43pm

math
The test Keyshawn's class took finished at 10:30 A.M. The first part of the test took 30 minutes. There was a 15 minute break. The second part of the test also took 30 minutes. At what time did the test start?
Monday, May 19, 2014 at 5:34pm

Math help
You roll a standard, six sided number cube. what is the probability of rolling a prime number or a number greater than 2.
Monday, May 19, 2014 at 5:30pm

math Question
Find an equation that models a hyperbolic lens with a=12 inches and foci that are 30 inches apart. assume that the center of the hyperbola is the origin and the transverse axis is vertical.
Monday, May 19, 2014 at 5:17pm

math
can you me the answer from fraction must be in simplest form!!!!
Monday, May 19, 2014 at 5:09pm

math Question
what is S10 for 1+3+9+27+...? 9,841 29,525 14,762 29,524
Monday, May 19, 2014 at 5:04pm

math Question
the 5th term in a geometric sequence is 160. The 7th term is 40. What are the possible values of the 6th term of the sequence +70 70 +80 80
Monday, May 19, 2014 at 4:49pm

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