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March 27, 2015

Homework Help: Math

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Recent Math Questions

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math
358/3= Estimate with 1 digit divisor
Thursday, February 19, 2015 at 2:55pm

math
Hi, Im having trouble with this math equation.. if you can, can you please help me and explain. the equation is : 3/7d=5/4 You have to find the solution. Thank you
Thursday, February 19, 2015 at 2:41pm

MATH
determine the average savings balance on a particular day. error of tolerance is 50. what is the minimum number of accounts he must sample to construct a 95% confidence interval. the standard deviation is 350
Thursday, February 19, 2015 at 1:48pm

math
Pete is standing 2 feet away from a mirror on the ground. Pete is 5 feet tall and can just see the top of the tree in the mirror from where he is standing. The two triangles formed in the picture above are similar. If the mirror is 12 feet away from the base of the tree, how ...
Thursday, February 19, 2015 at 1:36pm

math
Consider a slide shaped like a right triangle. The base of the slide is 45 feet away from the ladder. The top of the slide is 20 feet high. a) What is the slope of the slide. b) write an equation for the line that the slide would form. c) Lets say you were standing at the ...
Thursday, February 19, 2015 at 1:21pm

math
A basket contained 75 brown eggs and some white eggs. Salima found that 15% of the total number of eggs were rotten. Of the rotten eggs,2/3 were white and the remaining 6 were brown. a) How many white eggs were there altogether? b) How many eggs were not rotten?
Thursday, February 19, 2015 at 12:42pm

math
1.. Write the decimal three and four thousandths. 2.. the ratio of apples to bananas is 4:1.
Thursday, February 19, 2015 at 12:20pm

math
A group of 148 people is spending five days at a summer camp. The cook ordered 12 pounds of food for each adult and 9 pounds of food for each child. A total of 1410 pounds of food was ordered. Write a system of equations that describes this situation, and define your variables...
Thursday, February 19, 2015 at 11:11am

math
Jamal wants to put a rectangular frame on the above picture of the snowboarder. He has 18 cm of string to make the frame. Does he have enough for the frame? Explain why your answer is correct.
Thursday, February 19, 2015 at 10:06am

Math/Compound Interest
1. Use the compound interest table to find the compound amount earned on a $5,900 deposit for 10 years at 10% compounded semiannually. _____________________________________ A. 9,610.45 b. 15,654.47 c. 3,710.45 d. 12,375.66 2. Megan deposited $6,000 in an account that pays 4% ...
Thursday, February 19, 2015 at 9:56am

Math
Given the following information about a sample, calculate a z score for a test grade of 91. = 87, s = 4.01
Thursday, February 19, 2015 at 9:25am

Math
What is the total of 7 pieces of wire, each wire is 3/8 of a foot long?
Thursday, February 19, 2015 at 7:25am

math
How do prove without using a formula , that the sum of the series 3²+3³+3to the power of 6+...to 20 terms is given by S20 =9/8(9to the power of 20 -1)
Thursday, February 19, 2015 at 7:14am

MATH
In the arithmertic sequence series: a+(a+d)+(a+2d)+...+(l-d)+l,a is the first term,d the common difference and l the last term. how do prove that Sn=n/2[a+1]
Thursday, February 19, 2015 at 7:06am

MATH
A new sequence is formed by adding together the corresponding terms of a geometric sequence and an arithmetric sequence. the geometric sequence has a common ratio of 3 and the arthmetric sequence has a common difference of -2. The first two terms of the new sequence are 4 and ...
Thursday, February 19, 2015 at 6:55am

math
please explain #urgent the sum to infinity of a convergent series is 243. the sum of the first five terms is 242. how do you determine the values of the common ratio and the first term
Thursday, February 19, 2015 at 6:48am

math
Organisers for a polytechnic graduation has three sections of chairs to seat graduates, faculty and invited. 1120 chairs have been arranged for the graduatesm 1400 for the invited guests and 896 for the lecturers, if all the rows have the same number of chairs, calculate the ...
Thursday, February 19, 2015 at 5:19am

math
the 6th term of A.P. is 5 times the fifth term and the 11th term is exceeds twice the fifth term by three.find the 8th term
Thursday, February 19, 2015 at 1:26am

Math
I made graphs and th enext step is to create equations... Write the equation of each cycle in the form y=sin(bx+c). What is the Period and Phase Shift for the ophysical, emotional, and intellectual cycles? Feb. 13th, 2015 is at the origin. I dont' exactly get what a period...
Wednesday, February 18, 2015 at 11:37pm

math
The principal ordered four pizzas for the twelve students of the month. If each pizza has 8 pieces, what is the ratio of pieces of pizza to students of the month? Reduce your answer to lowest terms.
Wednesday, February 18, 2015 at 11:23pm

Math
How you know that 15/30 is greater than 1/3 but less 2/3
Wednesday, February 18, 2015 at 10:50pm

math
An equilateral hexagon has sides that are 2cm greater than those of a nearby square,if the perimeter of hexagon is 4 1/2times that of square what are sides lengths of them
Wednesday, February 18, 2015 at 10:24pm

math
a bicycle with a diameter of 24 inches is pedaled at a speed of 70 rotations per minute. find the distance the bike will travel in 48 mins
Wednesday, February 18, 2015 at 10:22pm

math help
The perimeter of triangle RXA is 39, PX=4 and AP=9.Find RX and RA.  P is at the middle.  I think it's under triangle bisector theorem. Help me answer this guys. Thanks
Wednesday, February 18, 2015 at 10:22pm

Math-Biorhythms
Write the equation of each cycle in the form y=sin(bx+c). What is the Period and Phase Shift for the ophysical, emotional, and intellectual cycles? Feb. 13th, 2015 is at the origin. I dont' exactly get what a period is and where you get the b and c values. Any help would ...
Wednesday, February 18, 2015 at 9:53pm

Math
There are 10,000 lockers. One person opens all the lockers. The second person closes every 2 doors. The third person counts every three locker and does the opposite to the locker. (Open/close it.) The fourth person counts every fourth locker and does the opposite to it. The ...
Wednesday, February 18, 2015 at 9:51pm

Math
There a rectangle fence the area is 635.4 square ft the width is 18ft what is the length of the fence
Wednesday, February 18, 2015 at 9:36pm

Math-percentages
The ratio of blueberries to blackberries in a fruit smoothie is 4:12. What percent of the drink is blueberry?
Wednesday, February 18, 2015 at 9:33pm

Math
There are 10,000 lockers. One person opens all the lockers. The second person closes every 2 doors. The third person counts every three locker and does the opposite to the locker. (Open/close it.) The fourth person counts every fourth locker and does the opposite to it. The ...
Wednesday, February 18, 2015 at 8:55pm

Math/algebra
9/55 8/62 5/37
Wednesday, February 18, 2015 at 8:55pm

Math Help Please
I can't solve this problem: 4x^3 + 5x^2 - 12 + 27/(x + 3) A. 4x^2 - 7x + 9 B. 4x^2 + 7x + 9 C. 4x^2 - 7x + 27 D. 4x^2 + 7x + 27 I can only get 4x^2 - 7x + 21 but obviously that isn't an answer..
Wednesday, February 18, 2015 at 8:13pm

math
Rafi is upgrading his cell phone and monthly service plan.Triax Cell offers a new phone for $50 and unlimited service for a monthly fee of $40.CellUR offers a new phone and unlimited service for a monthly fee of $50. After how many months will the cost of the two phones and ...
Wednesday, February 18, 2015 at 7:41pm

Math Help
Hi! Can someone please help me with these? Thanks! :) Directions: Look for the direction angle for vector v. If necessary, round your answer to the nearest tenth of a degree. 1.) v = 8i - 10j 2.) w = -4i - 3j
Wednesday, February 18, 2015 at 7:36pm

Math
u = <7, -3> and v = <-2, 4>. Find u + 3v.
Wednesday, February 18, 2015 at 7:34pm

Math
The ratio of oil to vinegar in a certain salad dressing is 8:5. How much oil must be blended with 7 liters of vinegar for that recipe?
Wednesday, February 18, 2015 at 7:30pm

Math
Q. Scott has different chores depending on the season. During the 5 warm months, he mows the yard which takes him about 1 in a half hours each week. During the 7 cold months, he shovels snow when needed. This winter he shoveled snow for a total of 6 hours. How many hours of ...
Wednesday, February 18, 2015 at 6:37pm

math
Alyssa estimates she needs 3 hours of repair work. She chooses the company that is less expensive for the 3 hour job. How much will Alyssa spend on the roof repair?
Wednesday, February 18, 2015 at 6:36pm

Math
Q. Timothy has to take out the trash every day at his house. There are 11 trash cans in his house and it takes him 14 seconds per trash can to empty them into the big trash can in the garbage. About how many minutes does he spend emptying the trash in a seven day week? - A. Do...
Wednesday, February 18, 2015 at 6:29pm

Math
47. For science class, Kyle needs to make a dilute solution of 12 ounces that is 30% vinegar. But he only has 20% vinegar 60^ vinegar. How many ounces of 20% vinegar should he use? A. 3 ounces B. 6 ounces C. 9 ounces D. 10 ounces
Wednesday, February 18, 2015 at 6:02pm

3rd grage math
marcel wants to make a mobile using only 3-dimensional solids with curved surfaces. based on this attribute, what figures will marcel use on his mobile
Wednesday, February 18, 2015 at 5:50pm

Geometry (math)
The 100-foot clock tower in Rome, Georgia is more than 100 feet tall. The minute hand is 4 feet, 3 inches long, and the hour hand is 3 feet, 6 inches long. How many inches farther does the tip of the minute hand travel than the tip of the hour hand in one day? I'm not ...
Wednesday, February 18, 2015 at 5:48pm

Math
The function f(x) = x^2 -2x + x^1/2 is: A. A polynomial because it is continuous. B. A polynomial because it is of the form axn. C. Not a polynomial because you are subtracting 2x. D. Not a polynomial because you can’t have any fractional exponents. Is the answer D?
Wednesday, February 18, 2015 at 5:34pm

Math
Nine friends share pumpkin pies equally. What fraction of a pumpkin pie does each friend get ?
Wednesday, February 18, 2015 at 4:48pm

math
it costs $12.50 to see a movie at a theater near jason's house. it only costs $1,95 to rent a dvd from an online service a dvd player costs $125 to the nearest whole number, how many movies must jason watch on dvd instead of at the theater before he recover the cost of the...
Wednesday, February 18, 2015 at 4:39pm

ms Sue
Thank You for site. she is a whiz in fractions but going in this now and no math book to bring home. Love the sites you give Karen
Wednesday, February 18, 2015 at 4:34pm

Math Ms Sue
Which expression would you use to find the area of a rectangle with a width of 4 inches and a length of 6 inches? 4+6 4x6 8x12 8+12 Ms Sue this is Karen you helped in College English so well I am trying to help my 3rd grade granddaughter with no math book just problems
Wednesday, February 18, 2015 at 4:21pm

3rd grade math
The lengths of the sides of a garden are 24 ft, 14 ft, and 35 ft. What is the gardens perimeter?
Wednesday, February 18, 2015 at 4:02pm

Math
1.) What is the sum of 5/6 + 2/3 A.) 1 1/3 *** B.) 1 1/2 C.) 1 2/3 D.) 1 3/4
Wednesday, February 18, 2015 at 3:59pm

math
The coordinates of point P are (-3, 5). Point R is a reflection of point P across the x-axis. Point S is a reflection of point P across the y-axis. Point R is located in quadrant . Point S is located in quadrant .
Wednesday, February 18, 2015 at 2:52pm

math
Mr. Howard wrote the following expressions on the board in order to determine which expressions are equivalent and how they are equivalent. 60x+24, 3(20x+8, 4(15x+6) Explain which of these expressions are equivalent using properties of operations, and then determine how other ...
Wednesday, February 18, 2015 at 2:27pm

math
Part A: Which two numbers represented by dots on the number line above are opposites? Part B: Explain how the numbers' relationship to 0 makes them opposites. the dots are -15, -5, 10, 15, 20, 25, and 35
Wednesday, February 18, 2015 at 2:21pm

math
Craig is creating gift baskets for the food pantry to give away. He has 91 canned food items and 52 boxed food items, giving him a total of 143 items. The sum is shown below. He wants to make sure that every gift basket has an equal amount of canned food items and an equal ...
Wednesday, February 18, 2015 at 2:19pm

Math
How do you find the component form AND the magnitude of the vector v with initial point (1, 11) and terminal point (9, 3)?
Wednesday, February 18, 2015 at 2:11pm

math
multiply and find the excluded value(s) d^2+1/d+7*5d/d-1d
Wednesday, February 18, 2015 at 2:03pm

math
The cost, C, in dollars for a health club membership depends on the number of whole months, m, that you join. There is a $49.00 enrollment fee and the membership costs $20.00 per month. This function can be expressed with the equation C
Wednesday, February 18, 2015 at 1:31pm

Discrete Math
So, the question I got was: ∀x,(x =/= 0) → (∃!y, xy = 1) I'm really confused about what the "∃!y" means in this context, because the way I'm interpreting the question is: "For all x (when x is not equal to 0), there does not exist...
Wednesday, February 18, 2015 at 1:15pm

math
Mr. Howard wrote the following expressions on the board in order to determine which expressions are equivalent and how they are equivalent. 60x+24, 3(20x+8, 4(15x+6) Explain which of these expressions are equivalent using properties of operations, and then determine how other ...
Wednesday, February 18, 2015 at 12:46pm

Math
Fin the value of Theta if sec theta=3 I inverted the value of sec theta to get cos theta=1/3 I then said Theta=cos-1 (1/3) Is thus correct? What is the answer rounded to the tenths place?
Wednesday, February 18, 2015 at 12:42pm

Math
1. Directions: Type your response in the box. Part A: Which two numbers represented by dots on the number line above are opposites? Part B: Explain how the numbers' relationship to 0 makes them opposites. the dots are -15, -5, 10, 15, 20, 25, and 35
Wednesday, February 18, 2015 at 12:36pm

math
At a certain location in the Coachella Valley of California the elevation is 215 feet below sea level. Clara wrote this elevation as -215 feet. Is Clara's response reasonable? Explain the given elevation with respect to its relationship to 0.
Wednesday, February 18, 2015 at 12:33pm

math
Craig is creating gift baskets for the food pantry to give away. He has 91 canned food items and 52 boxed food items, giving him a total of 143 items. The sum is shown below. He wants to make sure that every gift basket has an equal amount of canned food items and an equal ...
Wednesday, February 18, 2015 at 12:33pm

Math
Peter wants to hang his paintings on a wall that is 2 1/2 meters high and 5 1/2 meters wide. He hangs four paintings, each of which is 1 1/4 meters high and 2/3 meter wide. what area of the wall is NOT covered by paintings?
Wednesday, February 18, 2015 at 12:25pm

math
you (or youre parents) have a realised income of 1046.78 every 2 weeks how much should the monthly housing expense budget be to stay within acceptable limits
Wednesday, February 18, 2015 at 12:01pm

Math help
The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA. P is at the middle. I think it's under triangle bisector theorem. Help me answer this guys. Thanks
Wednesday, February 18, 2015 at 6:36am

math/Do not understand
At a local college,153 of the male students are smokers and 357 are non-smokers. Of the female students,145 are smokers and are 355 non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are ...
Wednesday, February 18, 2015 at 1:49am

Math
A survey of 59 customers was taken at a bookstore regarding the types of books purchased. The survey found 36 customers purchased mysteries, 28 purchased science fiction, 21 purchased romance novels, 15 purchased mysteries and science fiction, 12 purchased mysteries and ...
Wednesday, February 18, 2015 at 12:42am

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.
Wednesday, February 18, 2015 at 12:09am

math
A real estate agent makes 4.5% commission on every property she sells. How much commission does she make on a sale of a house for $132,500.00? Don't understand how to do the problem. Can you help me? Thank you
Tuesday, February 17, 2015 at 11:49pm

math
The Position of two A and B on the earth’s surface are (36°N, 49°E) and (360°N, 131°W ) respectively. (a) The difference in long between town A and town (b) Given that the radius of the earth is 6370, calculate the distance town A and town B. (c) Another ...
Tuesday, February 17, 2015 at 11:38pm

Math 222
). a^4b plus a^2b^3
Tuesday, February 17, 2015 at 11:27pm

Math 222
18z plus 45 plus z^2 *My addition sign is not working*
Tuesday, February 17, 2015 at 11:13pm

math
Find the value of θ between 0° and 360° satisfying the equation 5 sin θ = 4 θ= sin-1(4/5) = 53.13, 143.13
Tuesday, February 17, 2015 at 10:39pm

math
In the geometric progression, the first is a and the common ratio is r. The sun of the first two terms is 12 and the third term is 16 Determine the ratio (ar^2)/(a+ar) If the first term is larger than the second term, find the value of r.
Tuesday, February 17, 2015 at 10:30pm

math
A perpendicular to the line -4x +3 = 0 point (8, 5). Determine its equation x = 4/3 undefined y = 5
Tuesday, February 17, 2015 at 9:35pm

3rd grade math
mrs. lens wants to put a ribbon around the edge of a pillow. which tool and unit should she use to measure the perimeter of the pillow? measuring tape or ruler or yard stick?
Tuesday, February 17, 2015 at 9:34pm

math - ans.check
Given function G(x)=-7/8(45-x), find x to nearest tenth, when G(x)=15 ____________________________________ I'm stuck on this question,i tries on my own but i couldn't get it right, plz help! 15=-7/8(45-x) -8/7(15)=45-x (-17.1428..)=45-x -> stuck at this step. Thank ...
Tuesday, February 17, 2015 at 7:39pm

math
It costs $12.50 to see a movie at a theater near Jason's house. It costs only 1.95 to rent a DVD from an online service. A DVD player costs $125. To the nearest whole number, how many movies must Jason watch on DVD instead of at the theater before he recovers the cost of ...
Tuesday, February 17, 2015 at 7:04pm

Math
if 12 ft of ribbon is cut into pieces that are 2 1/4 ft long,how much ribbon is left over?
Tuesday, February 17, 2015 at 7:03pm

Math
You have a pizza that's 6 cool slices if you eat 4 .what it what is the angle measure of doing fortune of pizza in degrees
Tuesday, February 17, 2015 at 6:12pm

math
If a person has 56 pencils n 37 more and pens how many pens do she has
Tuesday, February 17, 2015 at 5:28pm

Math
A fuel dealer makes a profit of shillings 520 for every 1000 liters of petrol sold and shillings 480 for every 1000 liters of diesel sold. In a certain month the dealer sold twice as much diesel as petrol. If the total fuel sold that month was 900,000 liters, find the dealer&#...
Tuesday, February 17, 2015 at 5:03pm

math
Henry is attending a rodeo in Union County. The nearest airport is in Vindale, which is 33 miles away. On a map, the rodeo grounds and the airport are separated by 3 inches. What scale does the map use?
Tuesday, February 17, 2015 at 5:01pm

math
Gary measured the middle school and made a scale drawing. He used the scale 1 inch = 5 feet. The gym is 85 feet long in real life. How long is the gym in the drawing?
Tuesday, February 17, 2015 at 4:56pm

math
the sum of the first four terms of a geometry series is 15 and the sum of the next 4 terms is 240.determine the positive constant ratio.
Tuesday, February 17, 2015 at 4:16pm

math
3/8jof the cast in a musical hE TO SING. WHAT FRACTION OF THE CASt DOES not have to sing?
Tuesday, February 17, 2015 at 3:57pm

math - relations and functions
What is mean , Write a set of 10 ordered pairs that represent a function?
Tuesday, February 17, 2015 at 3:55pm

math
I'm doing my math hw, what does the sign ' mean for sets? Thanks
Tuesday, February 17, 2015 at 3:38pm

math
The size of an interior angle of a regular polygon is 3x° while its exterior angle is (x- 20)°. Find the number of sides of the polygon
Tuesday, February 17, 2015 at 3:02pm

math
35. Aaron wants to find an function that relates the price of a pizza to its size. He knows that this function need s to be non- linear. Which function below should he use? A. y=4piex B. y=pie(x-3) C. y=pie(x-3)^2 D. y=pie(x-3)^2+3(x+7)
Tuesday, February 17, 2015 at 2:52pm

math
A square brass plate is 2 mm thick and has a mass of 1.05 kg. The density of the brass is 8.4 g/cm3. Calculate the length of the plate in centimeters
Tuesday, February 17, 2015 at 2:50pm

math
If a city has an atmospheric pressure of 12.27 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your answer to the nearest foot.)
Tuesday, February 17, 2015 at 2:26pm

math
how do i do this equation ? -158=-2x+ 2(7x -7) . thank you
Tuesday, February 17, 2015 at 1:30pm

math
every container of fruit salad contains 1/3 of an apple. how many whole apples are there in 6 containers or fruit salad what should i do
Tuesday, February 17, 2015 at 10:45am

math
Show that the series 1 + 2x/5 + 3x^2/25 + 4x^3/125 + ....is convergent if -5<x<5 and for no other value of x.
Tuesday, February 17, 2015 at 2:02am

Math
Frank paid very well finance rate of 1.5% on the first $500 and 1% at any amount above $500 how much did he pay at the unpaid balance was $741.23
Tuesday, February 17, 2015 at 1:26am

Math
Identify the geometric figure that each object represents. _____1. Tip of the hair _____2. Chalkboard _____3. Ceiling _____4. Grain of sand _____5. Mole _____6. Flaslight _____7.String _____8.Wall _____9.Tip of a pen _____10.Edge of a box
Tuesday, February 17, 2015 at 1:03am

Math
I am asked to graph a triangle with the vertices (-3, 2), (5, 6), and (6, -4) after performing a dilation about the origin of scale factor 4. What does "about the origin" mean? Is this the same as just multiplying the ordered pairs by 4? Are the new vertices (-12, 8...
Tuesday, February 17, 2015 at 1:00am

math
A particle moves along straight line such that its displacement S meters from a given point is S = t^3 – 5t^2 + 4 whee t is time in seconds. Find (a) The displacement of particle at t = 5 (b) The velocity of the particle when t = 5 (c) The values of t when the particle ...
Tuesday, February 17, 2015 at 12:26am

Math
Three boxes each contain a number of billiard balls. One box contains only even-numbered balls, one box contains only odd numbered billiard balls, and the third box contains a mixture of odd and even numbered balls. All the boxes are mislabeled. By selecting one ball from only...
Tuesday, February 17, 2015 at 12:20am

Math
A 6 story building has stairs between equally spaced doors. How many times higher is the climb from the first to the sixth floor than the climb from the first to the third floor?
Monday, February 16, 2015 at 11:57pm

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