Saturday

November 28, 2015
**Math**

[Multivariable Calc] Let R be the region that is inside of the cardioid r=2 + cos(theta) and outside the circle r=2? So i need to calculate the: *area of R, as well as *the volume above R and below plane z=12-3x *the density of that solid if the density d(x,y,z) =z *the center...
*Saturday, November 28, 2015 by Ryan*

**Math**

If 17 million containers each 6 meters long were placed end to end,would it reach the moon
*Saturday, November 28, 2015 by Alisho*

**Math**

A 4" by 6" photograph is in a frame 3/4" wide. What is the outer perimeter of the framed photograph?
*Saturday, November 28, 2015 by Becky*

**Math **

A right triangle is formed by the origin and the x and y intercepts of the line 14x+7y=56. Find the area of the triangle. I know that Area of a triangle is 1/2bh, but how do I find the base and height? Thank you.
*Saturday, November 28, 2015 by Katie *

**Math **

One triangle has side lengths 3,5, and 6. A similar triangle has side lengths 18, 15 and 9. Which of the following ratios is the scale factor of the triangles? A 1/6 B 1/3 C 1/5 D 2/3 The answer is given as B, but I don't understand why or how to get that. Please help.
*Saturday, November 28, 2015 by Katie *

**math**

A particle travelling along a straight line starts with a velociry ofu metres per second and its speed increases per second by rl metres. The particle travels 10 metres in 2 seconds and 28 metres in 4 seconds. Find u and a. (lf the distance travelled in I seconds is s metres. ...
*Saturday, November 28, 2015 by noushil*

**Math (prob)**

The probability of an outstanding student pass a biology test is 60%. If he takes three test, which are the experimental results for each test? My doubt is if I should consider the pass=.6 since the first event or when it mentions that the probability is .6 and he takes three ...
*Saturday, November 28, 2015 by Bet*

**math**

x=3+2 p.s i know the answer... im just asking to know if your smart enough to answer such stupid question
*Saturday, November 28, 2015 by diba*

**Math**

inverse laplace transform of {5/(s-4)^3}
*Saturday, November 28, 2015 by Liz*

**Math**

If sec (t) = 13/12 then,find the value of cos (t)
*Saturday, November 28, 2015 by Pk*

**Math **

Mary buys a leather coat costing 900 at 990 after paying the sales tax calculate the rate of sales tax charged on coat
*Saturday, November 28, 2015 by Ashy*

**Math **

Mamta allow 4% discount on the marked price of her good and still earns a profit of 20% . What is the cost price of a shirt for her marked at 850?
*Saturday, November 28, 2015 by Ashy*

**math**

what is my number? Clue 1 My number is a perfect number. Clue 2 The only prime number in its prime factorization is 2. Clue 3 My number is a factor of 32. Clue 4 The sum of its digits is odd.
*Friday, November 27, 2015 by Anonymous*

**math**

a(n) ____ occurs during the design process when one benefit is given is given up in order to obtain another thanks
*Friday, November 27, 2015 by please help me!*

**math**

Triangle APQ is the image of ABC under a dilation centered at vertex A with scale factor ½. Triangle RBT is the image of ABC under a dilation centered at vertex B with scale factor ¾ . Which statement about ABC , APQ , and RBT is correct? none of the triangle are...
*Friday, November 27, 2015 by kudu*

**Math**

A certain marine engine has cylinders that are 3.55 inches in diameter and 3.74 inches deep. Find the total volume of 4 cylinders? hard question is there formula
*Friday, November 27, 2015 by kristine*

**Math**

john who is 42 years old has a nephew age 9. In how many years will the age of his nephew be one-fourth age?
*Friday, November 27, 2015 by Evie*

**Business math**

Bill Moore is buying a used Winnebago. His April monthly interest at 7.50% was $37.50. What was Bill’s principal balance at the beginning of April? (Use 360 days a year. Do not round intermediate calculations.)
*Friday, November 27, 2015 by LaDonna*

**Math**

A cubical container measures 5 inches. On each edge. What does it cost to fill the container at $2.88 per cubin in.? formula for this help?
*Friday, November 27, 2015 by kristine*

**Math**

Ava pours 3 gallons of paint equally into 5 cans. How many gallons of paint will there be in each can?
*Friday, November 27, 2015 by Austin*

**math**

A carpenter is constructing a triangular roof for a storage shed as shown in the figure. Part A isosceles triangle = 15 degrees and 15 degrees length of bas is 45 How high will the peaks of the rise above in the top of the shed? b/2 = 22.5 tan(15) = h/22.5 h = 22.5(tan15) ...
*Friday, November 27, 2015 by kudu*

**math**

The sum of all five terms of an arithmetic sequence is 55. Find the sum of the first three terms of the sequence if the sum of the last three is 48.
*Friday, November 27, 2015 by asd*

**Math**

Landscape is designing a display of flowers for an area in a public park. The flower seeds will be planted at points lie on a circle that has a diameter of 8 feet. The point where seed is planted must be at least 2 feet away from seeds on the either side of it. b. After ...
*Friday, November 27, 2015 by Kudu*

**math**

The given cylindrical container r =3 inches and height= 8in is used to fill the rectangular prism fish tank 24 , 24 and 12 inches with water. What is the least number of full cylindrical needed to completely fill the fish tank?
*Friday, November 27, 2015 by kudu*

**Math**

The table below represents the velocity of a car as a function of time: Time (hour) x Velocity (miles/hours) y 0 50 1 52 2 54 3 56 Part A: What is the y-intercept of the function, and what does this tell you about the car? Part B: Calculate the average rate of change of the ...
*Friday, November 27, 2015 by Adam*

**math**

on September 30th I want to go to the movies and dinner with my friends. it will cost $25 for dinner and $15 for the movies my balance is $60 willi have enough to go ou
*Friday, November 27, 2015 by jordan*

**Math (prob)**

The probability of an outstanding student pass a biology test is 60%. If he takes three test,which are the experimental results for each test? Please, help me to understand.
*Friday, November 27, 2015 by Bet*

**literature**

Sharing the names of the authors and illustrators allows children to see: A. that books are created by people. B. that books are real. C. that writing books can be a profession. D. that illustrating books can be a profession. I would think its A Having students visit a petting...
*Friday, November 27, 2015 by bev*

**math**

Octagon PQRSTVWZ is a regular octagon with the center at point C. Which transformation will map octagon PQRSTVWZ onto itself?
*Friday, November 27, 2015 by kudu*

**Math**

The air temperature decreases by about 1 degree Fahrenheit for each 300 feet of altitude. a) Find a function T(x) for the temperature at an altitude of x feet if the sea-level temperature is 45∘F. (b) Find T(1000). [Round to two decimals] I considered two sets of points...
*Friday, November 27, 2015 by Rosie*

**literature**

Literature supports the building of a readers’s imagination because: A. readers are placing themselves into a story. B. readers relate only to what they know. C. readers are presented with an unstructured picture of life. D. readers are seeing worlds they already know. A...
*Friday, November 27, 2015 by bev*

**literature**

You can often use literature in math, science and social studies to: A. entertain kids who finish their work. B. keep students quiet after a test. C. broaden the study of a topic. D. encourage kids to read nonfiction C ?
*Friday, November 27, 2015 by bev*

**Math Algebra**

The numerator of the fraction 5/12 is decreased b y 2% and the denominator is increased by 3%. What is the new fraction
*Friday, November 27, 2015 by Dawne*

**math**

ART An artist is going to sell two sizes of prints at an art fair. The artist will change $20 for a small print and $45 for a large print. The artist would like to sell twice ad many small prints as large prints. The booth the artist is renting for the day cost $510. How many ...
*Friday, November 27, 2015 by yoselyn *

**math**

landscape is designing a display of flowers for an area in a public park. The flower seeds will be planted at points lie on a circle that has a diameter of 8 feet. The point where seed is planted must be at least 2 feet away from seeds on the either side of it. A. What is the...
*Friday, November 27, 2015 by jah*

**math**

A computer monitor is 20 inches wide. The aspect ratio, which is the ratio of the width of the screen to the height of the screen, is 16:9. What is the length diagonal of the screen, to the nearest whole inch.
*Friday, November 27, 2015 by kudu*

**math**

A landscape is designing a display of flowers for an area in a public park. The flower seeds will be planted at points lie on a circle that has a diameter of 8 feet. The point where seed is planted must be at least 2 feet away from seeds on the either side of it. A. What is ...
*Friday, November 27, 2015 by jah*

**Math calculus **

The top and bottom margins of a poster are 8 cm and the side margins are each 8 cm. If the area of printed material on the poster is fixed at 382 square centimeters, find the dimensions of the poster with the smallest area?
*Friday, November 27, 2015 by MArıam *

**Math**

What price should asha mark on a pair of shoes which cost him 1200 so as to gain 12%after allowing a discount of 16%
*Friday, November 27, 2015 by Ashy*

**MATH**

a washing line is attached at points A and B on two vertical posts standing horizontal ground. Point A is 2.1 meters above the ground on one post. Point Bis 7.1 meters above the ground on the other post. The horizontal distance between the two posts is 6 meters. Calculate the ...
*Friday, November 27, 2015 by DURAID*

**math**

how to solve 1/100-2/100+3/100-4/100+....+99/100-1?? and this?? -1/100+2/100-3/100+4/100-....-99/100+1??
*Friday, November 27, 2015 by Cara*

**math**

how to do this?? 11/15=(1/a+(b/c+(d/e+f))) find a,b,c,d,e, and f??
*Friday, November 27, 2015 by lin*

**math**

how to do this? In an island, a number of survivors have enough food to last for 5 days. After 2 days, 4 of the survivors died and the remaining food lasted for 5 more days. Find the original number of survivors...
*Friday, November 27, 2015 by lin*

**math**

what is the remainder when 2^1000 is divided by 7??
*Friday, November 27, 2015 by lin*

**math**

how to solve for x? 5^x=(25^(2x-1))(125^(4-2x))
*Friday, November 27, 2015 by lin*

**Math **

prove sin2x+cos2x+1 tan(pi/4+x) ______________ = __________ sin2x+cos2x-1 tanx so what I did tan(x) (1+cos(2x)+sin(2x)=tan(pi/4+x) (-1+cos(2x)+sin(2x)
*Thursday, November 26, 2015 by Lana *

**Math (prob)**

The probability of an outstanding student pass a biology test is 60%. If he takes three test,which are the experimental results for each test? Please, help me to understand.
*Thursday, November 26, 2015 by Bet*

**Math**

The functions f(x) and g(x) are described below: f(x) = 32x + 8 g(x) = 32x − 9 The graph of g(x) is obtained by shifting down the graph of f(x) by _____ units.
*Thursday, November 26, 2015 by Fionna*

**CAT, Business studies, Life Sciences and Pure Math**

I'm not so sure if I should be changing Life Sciences to Consumer Studies OR business to Consumer Studies.. I don't know what I wanna do in varsity. would you kindly assist me on both subjects and career.. I'm in grade 10
*Thursday, November 26, 2015 by Lihle*

**math**

The production costs for 4 lollies is 9.55 strawberry, 8.70 orange, 9.99 grape, 6.30 bubblegum. The packaging is the same for all lollies at 5.00 per lolly. Owners like to add 25% markup on their stock. Calculate the retail price of the strawberry lolly. Is packaging included ...
*Thursday, November 26, 2015 by megan*

**math**

hi
*Thursday, November 26, 2015 by Taylor swift*

**math**

a rectangular yard is 36.7 meters long
*Thursday, November 26, 2015 by Perimeter*

**Math**

A thin plastic band 50 cm long is used to tie seven plastic pipes together. What is the radius of the pipe? The shape is a hexagon but not vertices but curved. My solution was , you get an eqilateral triangle with side 3 r 3 r = 50/6 r = 50/6/3 = 2.73 But the text book answer ...
*Thursday, November 26, 2015 by Manav*

**Math**

The sum of two acute angles in a right triangle is 90 degrees. Find the acute angles on the right triangel wherein twice the first is 40 degrees more than thrice the second
*Thursday, November 26, 2015 by Rin*

**Math**

The length of the rectangle 5cm more than twice the width.The perimeter is 70.What is the area?
*Thursday, November 26, 2015 by Rin*

**Math**

What is the circumference of d=2.1cm using 22/7
*Thursday, November 26, 2015 by Mark*

**math**

the measure of two supplementary angles have the sum of their measurements is equal to 180 degrees.
*Thursday, November 26, 2015 by Anonymous*

**MATH**

Give the equivalent linear function in standard form: (ax + by = c): a.x=9-3y/-2 b.y=-4x+5/3
*Thursday, November 26, 2015 by Camz*

**math **

Bill swam 4 kilometers against the current in the same amount of time it took him to swim 12 kilometers with the current. The rate of the current was 2 kilometers per hour. How fast would Bill swim if there were no current?
*Wednesday, November 25, 2015 by mik*

**math**

32 men can do a piece of work in 18 days. In how many days will 72 men do it? For 30 buffaloes, the fodder in a certain stock is sufficient for 8 days. For how many buffaloes the fodder is sufficient for 12 days? Pls help me
*Wednesday, November 25, 2015 by jyoti*

**math**

in a class there are 28 boys and 14 girls.what fraction of the pupils are girls.
*Wednesday, November 25, 2015 by Anonymous*

**Math**

The mean for Eric's class is $148. The mean for Natalia's class is $152. Natalia's sales total $150. If Natalia moves to Eric's class, the mean for each class increases. Explain why.
*Wednesday, November 25, 2015 by Riwa*

**Math**

A box containing 5 red balls and 3 green balls weighs 43 g. When the box contains 3 red balls and 5 red balls it weighs 37g. When it contains one ball of each it weighs 19g. What is the mass of the box and of each ball.
*Wednesday, November 25, 2015 by Zeisha Khan*

**Algebra**

Mr. Wright has a class of 15 students. He can spend $23 on each student to buy math supplies for the year. He first buys all of his students calculators, which costs a total of $69.45. After buying the calculators, how much does he have left to spend on each student?
*Wednesday, November 25, 2015 by Caleb*

**math**

Use the rated acute angle to state an equivalent expression sin 350
*Wednesday, November 25, 2015 by mila*

**Math **

Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625. Write an equation in the standard form to represent the total rent (y) that Max has to pay for renting the motorbike for x days. Part B: Write the ...
*Wednesday, November 25, 2015 by Karen*

**math**

The cost of producing x units of balloons is given by C(x) =140 + 0.125x + 0.0005x^2. If the revenue function is determined by R(x) = 3x, maximum profit is:
*Wednesday, November 25, 2015 by almas*

**math**

Maximum or minimum values of the function f(x) = (1 – x)^2 e^x is: i need solution (a) Minimum value at x = –1; maximum value x = 1 (b) Minimum value at x = 1; maximum value x = –2 (c) Minimum value at x = 1; maximum value x = –1 (d) None of these
*Wednesday, November 25, 2015 by asad*

**math**

The total cost C(x) of a firm is C(x) = 0.0005x^3 – 0.7x^2 – 30x + 3,000, where x is the output. The value of x; for which MVC = AVC is: (where VC denotes the variable cost, MVC denotes marginal variable cost and AVC denotes average variable cost
*Wednesday, November 25, 2015 by moon*

**math**

A company determines that the marginal cost of producing x units of a particular commodity during a one-day operation is 16x – 1,591, where the production cost is in rupees. The selling price of a commodity is fixed at Rs.9 per unit and the fixed cost is Rs.1,800 per day...
*Wednesday, November 25, 2015 by zaib ali*

**math**

A Company has introduced a new product whose annual demand will depend on price charged. The demand of the product is represented by the function q = 100,000 – 200p, (where p = price and q = quantity demanded annually). Studies indicate that total cost of producing q unit...
*Wednesday, November 25, 2015 by Haroon Gondal*

**Math **

The table below represents the velocity of a car as a function of time: Time (hour) x Velocity (miles/hours) y 0 50 1 52 2 54 3 56 Part A: What is the y-intercept of the function, and what does this tell you about the car? (4 points) Part B: Calculate the average rate of ...
*Wednesday, November 25, 2015 by Kyle *

**math**

Write an equation of the line that passes through each pair of points (0,0) and (7,7)
*Wednesday, November 25, 2015 by Cristal*

**Math 250**

Locating a car from the 102nd floor observation deck of the empire state building, an observer spots his car at an angle of depression of 5 degrees. if the observation deck is 1250 feet high, how far is his car from the building?
*Wednesday, November 25, 2015 by Eseta *

**math**

Mary works in a factory that produces 1,000 telephones each day. When 30 telephones were sampled, it was found that 9 were defective. Estimate how many telephones are defective each day.
*Wednesday, November 25, 2015 by Anonymous*

**math/ pre algebra**

Lydia rode 243 miles in a three day bike trip. On the first day, Lydia rode 67 miles. On the second day, she rode 92 miles. How many miles per hour did she average on the third day if she rode for 7 hours?
*Wednesday, November 25, 2015 by neftali *

**math**

Indicate the correct answer for the function. If (x)= x^3 - 3x^2 + 3x + 7, then f(x) is: a) Maximum b) Minimum c) Neither maximum or minimum d) not possible
*Wednesday, November 25, 2015 by Ahmad Faraz*

**math**

32 men can do a piece of work in 18 days. In how many days will 72 men do it? For 30 buffaloes, the fodder in a certain stock is sufficient for 8 days. For how many buffaloes the fodder is sufficient for 12 days? Pls help me
*Wednesday, November 25, 2015 by jyoti*

**Math**

True or false: If a is any positive real number, the graph of y=a^x will go through the point (0,1). True or false: x^3+2x^2 is an exponential equation because it contains exponents. I got true for both of them is that right?
*Wednesday, November 25, 2015 by Sam*

**Math**

I am the product of 135 and decreased by 500. who am I?
*Wednesday, November 25, 2015 by marcus*

**math**

Air is pumped into a spherical balloon at the rate of 20cm^3/s^-1.find the rate of change of radius of the balloon when the radius is 6cm
*Wednesday, November 25, 2015 by charles*

**math**

Jade's age now is the same as Timmy's five years hence. Timmy's age six years ago was half Jade's age now. Find the present age of each.
*Wednesday, November 25, 2015 by Nyx*

**math**

seven years ago, Mary was 6 times as old as Cora, In 1 year, she will be only twice as old as Cora. Find their present ages
*Wednesday, November 25, 2015 by Nyx*

**math**

A company produces x units of output at a total cost of 1/3 x^3 – 18x^2 + 160x. Output at which average cost is equal to marginal cost is:
*Wednesday, November 25, 2015 by honey*

**math**

15/box is a fraction that lies between 1/7 and 1/8. what is the missing whole number in the box?
*Wednesday, November 25, 2015 by kima*

**math**

The marginal cost of production (in Rs) is 3 + x/3000 + e^(-0.03x), where x denotes the number of units. The cost of producing 100th unit is:
*Wednesday, November 25, 2015 by asad*

**math**

An airplane can fly 625 miles with the wind in the same amount of time as it can fly 425 miles against the wind. If the wind speed is 50 mph, find the speed of the plane in still air. (Round your answer to the nearest whole number.)
*Tuesday, November 24, 2015 by jacob*

**Math**

Please help me!!! The table below represents the velocity of a car as a function of time: time Velocity seconds (m/s) x f (x) 15 45 22 66 29 87 36 108 The average rate of change of the function between x = 15 to x = 29 is __________m/s2 and represents the car's acceleration
*Tuesday, November 24, 2015 by Harper*

**math**

what is 3 degrees colder than -2
*Tuesday, November 24, 2015 by Anonymous*

**MATH HELP**

If the pattern rule is x2 +6, imagine what the trend line for this pattern would look like (on a graph of course). What pattern rule would have a trend line at the same vertical intercept (y-intercept) but has a different steepness? Explain your thinking. PLEASE HELP ME.
*Tuesday, November 24, 2015 by TOO FABULOUS FOR YOU*

**math**

Why would you make one of the addend a ten number when solving an addition problem
*Tuesday, November 24, 2015 by jayden*

**math**

Determine whether the sequence is a Fibonacci-type sequence. If it is, determine the next two terms of the sequence. -4, 5, 1, -3, -2
*Tuesday, November 24, 2015 by crystal*

**MATH HELP**

1. Which ratios form a proportion? Use equivalent ratios to test each pair. A. 4/9, 2/3 B. 6/15, 9/12 C. 12/16, 15/20 D. 18/ 20, 24/30 2. Which ratio forms a proportion with 20/30? Use equivalent ratios to test each ratio. A. 16/24 B. 10/20 C. 17/51 D. 16/60 3. Which ratios ...
*Tuesday, November 24, 2015 by goldensparklegirl222*

**Math**

Evalute "the length of a ractangle is twice its width. The perimeter of the ractangle is 126.
*Tuesday, November 24, 2015 by Helman*

**Math**

Which set represents the range of the function shown? {(8, 2), (6, 5), (4, 7), (11, −2)} A.{-2,2,5,7} B.{4,6,8,11} C.{(2,8),(5,6),(7,4),(-2,11)} D.{-2,2,4,5,6,7,8,11}
*Tuesday, November 24, 2015 by June*

**math**

A picture is 17 inches long and 13 inches wide. It is 2-inch wide frame. What is the area of the frame?
*Tuesday, November 24, 2015 by Celeste Gordon *

**math**

14 different airlines.Each airline schedules 45 departing flight each day.How many flights depart from the airport in one day
*Tuesday, November 24, 2015 by Kailua panel *

**math**

Can I get one dice
*Tuesday, November 24, 2015 by Yenifer *

**Math**

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 1,600 + 300 ln a (a ≥ 1). How much needs to be spent (to the nearest hundred dollars) to sell 4...
*Tuesday, November 24, 2015 by Melissa*

**Math **

343 502 in scientific notation
*Tuesday, November 24, 2015 by Aleo*