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September 20, 2014

September 20, 2014

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**math**

two pieces of metal each are cut into tenths. how many pieces will there be?
*Tuesday, April 16, 2013 at 7:25pm*

**Math**

A meteoroid changed velocity from 1.0 km/s to 1.8 km/s in 0.03 seconds. What is the acceleration of the meteoroid?
*Tuesday, April 16, 2013 at 7:14pm*

**Math**

Remy can chop 5 carrots in 3 minutes. How long will it take him to chop 120 carrots?
*Tuesday, April 16, 2013 at 7:11pm*

**Math**

In a store, pencils have one price and pens have another. 3 Pencils and 2 pens cost 78 cents. 2 pencils and 3 pens cost 72 cents. How much does 1 pencil and 1 pen cost? Help! I dont get this.
*Tuesday, April 16, 2013 at 7:09pm*

**Math**

How many of the triples below could be sides of a right triangle? (40,41,58); (10,25,26); (16,30,33); (20,48,52) A)4 B)2 C)1 D)3 Please help!!!!
*Tuesday, April 16, 2013 at 7:05pm*

**Math**

38.In science lab 20 out of 25 students wore protective glasses. The other 5 students filled out lab reports. Which decimal number is equivalent to the fraction of students who did Not wear protective glasses? A.0.25 B.0.80 C.0.50 D.0.20 A 39.Nik is coloring holiday ornaments ...
*Tuesday, April 16, 2013 at 6:54pm*

**math**

An arithmetic sequence is represented in the following table. Enter the missing term of the sequence. 10,-2,-14,-26,?...
*Tuesday, April 16, 2013 at 6:53pm*

**College Algebra**

Theres this chemistry problem im getting stuck in because i'm confusing myself with the math. Equation given = %O2 saturation = 100 x (pO2/(pO2 + K) %O2 = 35 K = 1.51 how do I calculate pO2?? I can't seem to cancel them out correctly. Answer = 0.813
*Tuesday, April 16, 2013 at 6:42pm*

**Math**

Samantha and her family are traveling 325 miles to Houston for the holidays. Her dad drives at a rate of 52 milers per hour during the trip. Base on this info, which of the following statenemnts is a reasonable conclusion? A.Samantha and her family will have driven more than ...
*Tuesday, April 16, 2013 at 6:38pm*

**Math**

Ms wanton recycles colored pencils in a box for use in her art class. She has accumulated 4 red 5 blue 3 yellow and 3 green colored pencils. If one of her students reaches into the box and selects one pencil without looking what is the probabiltiy that the student will not get...
*Tuesday, April 16, 2013 at 6:25pm*

**College math**

A team played 24 games and won 2/3 of them. How many games did they win?
*Tuesday, April 16, 2013 at 6:19pm*

**math algebra **

Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^3-2197 x=
*Tuesday, April 16, 2013 at 6:18pm*

**math algebra **

Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^3-2197 x=
*Tuesday, April 16, 2013 at 6:18pm*

**math algebra **

Factor the given expression. Then use the zero product rule and the quadratic formula to solve the problem. There should be three solutions to the equation. x^3-2197 x=
*Tuesday, April 16, 2013 at 6:18pm*

**math**

what is a verbal rule in math?
*Tuesday, April 16, 2013 at 6:17pm*

**Math**

Which is in order from least to greatest A.1/4,0.33,2/5,0.5,2/3 B.1/3,1/2,0.4,0.25,2/3 C.1/3,1/4,0/4,1/2,0.66 D.2/3,0.5,2/5,0.33,1/4 A Talent Show auditions were held after school. There were 3 groups who sang for every 2 groups that danced. If there were a total of 30 groups ...
*Tuesday, April 16, 2013 at 6:10pm*

**Math**

Gerald jumped a distance of 10 1/4 feet at the field events during the district track meet. Juan jumped a distance of 1 1/3 feet less than Gerald. What distance did Juan jump at the track meet? A.9 1/12 B.9 2/7 C.8 11/12 D.11 7/12 C Tory has successfully completed 44% of the ...
*Tuesday, April 16, 2013 at 6:06pm*

**Math**

1. Find the total amount if you deposit $500 at a rate of 5% for two years using simple interest. 2. Find the total amount if you deposit $300 at a rate of 6% for three years using simple interest. 3. Find the total amount if you deposit $ 600 at a rate of 5% for two years ...
*Tuesday, April 16, 2013 at 6:03pm*

**Math**

Jocelyn made a spinner If Jocelyn spins only one time what is the probability that the arrow will not land on a red section of the spinner? 3 parts are red 4 parts are blue 1 part is white A.1/8 B.5/8 C.3/8 D.1/2 B Palmer participated in sports for 8 hours and drama for 5 ...
*Tuesday, April 16, 2013 at 5:58pm*

**Math**

What is the speed of a walking person in m/s if the person travels 1000m in 20 minutes.
*Tuesday, April 16, 2013 at 5:54pm*

**`Math**

A rectangular park has an area of 6 square miles. The width of the property is 3/8 the length of the property. What is the width of the property?
*Tuesday, April 16, 2013 at 5:50pm*

**4th grade Math**

What fraction could be used to express 2 parts that equal 15/17?
*Tuesday, April 16, 2013 at 5:34pm*

**Math-Trig**

Find all angles in degrees that satisfy each equation. tan(a)+rad3=0
*Tuesday, April 16, 2013 at 5:32pm*

**math**

Find all angles in degrees that satisfy each question. 2sin(a)+rad2=0
*Tuesday, April 16, 2013 at 5:31pm*

**math**

in triangle BCD, find the value of angle B, if b = 41 cm, c = 65 cm, and d = 52 cm.
*Tuesday, April 16, 2013 at 5:27pm*

**math**

in triangle lmo, find the value of m, if o=32 cm, l=52 cm and angle e= 73 degrees
*Tuesday, April 16, 2013 at 5:22pm*

**math**

A recipe for snack mix has a ratio of 2 cup of nuts 4 cups of pretzels and 3 cups of raisins. How many cups of nuts are there for each cup of fractions?
*Tuesday, April 16, 2013 at 4:41pm*

**Math**

A cirlcle has a diameter of 15 meters. What is the approximate circumference ?
*Tuesday, April 16, 2013 at 4:08pm*

**math**

If I have a length of paper 48 cm long and 34 cm wide and I divide into 6 eqaul sections what is the area of each section?
*Tuesday, April 16, 2013 at 4:02pm*

**Annuity math**

The city of Toronto’s population rose from 2,000,000 to 4,500,000 in the last twenty years of the twentieth century. What was the annual average percentage increase in population for that period?
*Tuesday, April 16, 2013 at 4:02pm*

**math**

1. Which set represents a Pythagorean triple? A:2,5,6 B:6,8,10 C:8,8,128 D:8,10,256 2. What is the hypotenuse of a right triangle if the legs are each 20 inches long? Round to the nearest whole number. A:28 B:29 C:30 D:31 I think the first ones B, and the second one is C
*Tuesday, April 16, 2013 at 4:01pm*

**Math**

Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation.
*Tuesday, April 16, 2013 at 3:32pm*

**Math **

A piece of wire 64 cm long is bent to form a rhombus.What is the length of each side of the rhombus
*Tuesday, April 16, 2013 at 2:51pm*

**math**

Someone HELP pleas. 3. One hundred twenty-five tickets have been sold for an event at a local theater. If this represents 25% of the capacity for the theater, which of the following is the capacity? A. 156 B. 375 C.410 D. 500 4. In a bag of candy, there are five red candies ...
*Tuesday, April 16, 2013 at 2:06pm*

**math**

Two different relationships are shown below. Relationship 1: xy = 3 Relationship 2: A graph is shown that has the following points plotted: one comma three, two comma six, three comma nine, four comma twelve. a) Identify each relationship as direct or inverse variation. b) ...
*Tuesday, April 16, 2013 at 1:54pm*

**Math**

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 dont get these Please help.
*Tuesday, April 16, 2013 at 1:12pm*

**math,science**

In the Lotka-Volterra competition equations, if a21 > 1, then:
*Tuesday, April 16, 2013 at 1:08pm*

**Math**

On a recent math exam, Alex received a score of 92%. His z-score is positive 2. If the mean for the exam is 84, what is the standard deviation?
*Tuesday, April 16, 2013 at 12:40pm*

** math**

The city of Toronto’s population rose from 2,000,000 to 4,500,000 in the last twenty years of the twentieth century. What was the annual average percentage increase in population for that period?
*Tuesday, April 16, 2013 at 12:34pm*

**math**

a=0.03t+1.4 t=8
*Tuesday, April 16, 2013 at 12:08pm*

**Java programming**

List all overloading methods (including constructors) in this coding.. public class Circle { private double radius; private String colour; public Circle() { radius = 0; colour = ""; } public Circle (double r) { radius = r; } double getRadius() { return radius; } ...
*Tuesday, April 16, 2013 at 11:59am*

**Math**

Ms.York has 32 boys and 18 girls in her science class. She ramdomly selects 1 student to help her sweep the floor. What is the probability that the student she selects will be a girl?
*Tuesday, April 16, 2013 at 11:33am*

**Math**

Please help I don't get how to do this! A spinner has three congruent sectors colored orange, green, and purple. Use the rule of probability of each event. a) landing on orange, then landing on purple b) landing on the same color 2 times in a row.
*Tuesday, April 16, 2013 at 11:05am*

**Math**

Please help with math!!!!!? 1. A bag contains 9 tiles numbered 1 to 9. P(4) = (1 point) . experimental; the result is found by repeating an experiment. . experimental; the result is based on the number of possible outcomes. . theoretical; the result is found by repeating an ...
*Tuesday, April 16, 2013 at 10:34am*

**Math**

A circular pizza with a 12 inch diameter has 20 pieces of pepperoni. How many pieces will a pizza with an 18 inch diameter have?
*Tuesday, April 16, 2013 at 10:23am*

**math**

Jenny borrowed $500 for five years at 4 percent interest, compounded annually. What is the total amount she will have paid when she pays off the loan? total amount = P (1 + i)t
*Tuesday, April 16, 2013 at 10:12am*

**Math**

For a fundraiser the soccer team is planning to sell potting soil. The two boxes they will use to sell the soil are shown below. How much do you think they ought to charge for the larger box of potting soil based on the volume of the two boxes? Explain in detail and give ...
*Tuesday, April 16, 2013 at 8:33am*

**Math**

Merrie is putting away the 1 cubic centimeter blocks. She has a box that is 24 cm by 12 cm by 6 cm. How many cubes can she put away in this box?
*Tuesday, April 16, 2013 at 8:29am*

**math**

What is the probability of 5 or fewer successes in a binomial experiment with 7 trials if in each trial, the porbability of success is .8?
*Tuesday, April 16, 2013 at 7:27am*

**math**

Let A,B and C be matrices such that A=⎛⎝132213⎞⎠, B=(122423) and C=AB. What is the sum of all the elements (entries) of matrix C?
*Tuesday, April 16, 2013 at 3:55am*

**math**

What is the sum of all of the positive divisors of 100?
*Tuesday, April 16, 2013 at 3:43am*

**math**

The point (x,y) lies on both conics x2+xy+x=81 and y2+xy+y=51. Given that x+y is positive, determine the value of x+y.
*Tuesday, April 16, 2013 at 3:41am*

**math**

How many ordered pairs of integers (x,y) are there such that 2x2−2xy+y2=225?
*Tuesday, April 16, 2013 at 3:38am*

**math**

The function f(x)=x4−15x3+81x2−201x+182 has four complex roots, one of which is 3−2i. What is the sum of all real and imaginary coefficients of these roots?
*Tuesday, April 16, 2013 at 3:37am*

**math**

Jane decides to build a wooden pencil box. She allows 32cm along the diagonal. The width of the box is to be 8cm. find the angle that the diagonal makes with the length of the box.
*Tuesday, April 16, 2013 at 2:49am*

**Math/ Calculus**

Given an initial guess of x1 = 1, use the Newton-Raphson Method to fi nd the second approximation x = x2 of the solution of the equation: sqrt(x+3)=x
*Tuesday, April 16, 2013 at 1:30am*

**Math/ Calculus Help1**

Supplies are dropped from a stationary (not moving up or down) helicopter and, after some amount of time, land on the ground with a velocity of -160 feet per second. Assumptions: Start time at t = 0 and ignore air resistance. Recall that the height function is given by y(t)= ...
*Tuesday, April 16, 2013 at 1:17am*

**math**

An apple orchard has an average yield of 36 bushels of apples per tree if tree density is 26 trees per acre. For each unit increase in tree density, the yield decreases by 2 bushels per tree. How many trees per acre should be planted to maximize the yield? _______tree/acre
*Monday, April 15, 2013 at 11:40pm*

**Math**

I need to change this expression to postfix form. (12*A^2-2*A+31)/(4*A+6) I know how to do this except for the squaring part. I got stuck. This is my try. 12 A 2 ^ * 2 A * - 31 + 4 A * 6 + / When I test this in a calculator, it gives different results. Another problem is that ...
*Monday, April 15, 2013 at 11:31pm*

**math**

The figure below depicts a racetrack with ends that are semicircular. The length of the track is 880 ft (1/6 mi). Find l and r so that the area of the rectangular portion of the region enclosed by the racetrack is as large as possible. (Round your answers to the nearest foot.)
*Monday, April 15, 2013 at 10:29pm*

**math**

There are 100 runners, each given a distinct bib labeled 1 to 100. What is the most number of runners that we could arrange in a circle, such that the product of the numbers on the bibs of any 2 neighboring runners, is less than 1000?
*Monday, April 15, 2013 at 10:18pm*

**Math**

When you are adding variable with exponents, do you add the exponents too? What would ab2 + 2ab2 =
*Monday, April 15, 2013 at 8:36pm*

**Math**

What is the median, mode, range of 17, 47, 12, 13, 12?
*Monday, April 15, 2013 at 8:20pm*

**Math**

What is (a+b) to the third power?
*Monday, April 15, 2013 at 8:08pm*

**math**

express the following as a single logarithm log2+log3+log4
*Monday, April 15, 2013 at 7:55pm*

**math**

x 65 ft. ____ = _______ 3 ft. 39 ft.
*Monday, April 15, 2013 at 7:36pm*

**MATH**

Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...
*Monday, April 15, 2013 at 7:24pm*

**math**

Determine all the possible values of x where 0 deg is more than or equal to x and x is more or equal to 360 deg such that i'm not sure the solution, please correct it and how to find the x value, 2 tan x - 1 = cot x solution: (sec x -1)(sec x + 2) = 0 sec -1 = 0 , sec x + ...
*Monday, April 15, 2013 at 7:22pm*

**math**

how tall is a telephone pole if it cast a shadow 24 feet long
*Monday, April 15, 2013 at 7:21pm*

**math**

Determine all the possible values of x where 0 deg is more than or equal to x and x is more or equal to 360 deg such that i'm not sure the solution, please correct it, sin x sec x - 3 sin x = 0 the solution: sin x 1/cos x - 3 sin x = 0 sin x - 3 sin x = cos x then i don&#...
*Monday, April 15, 2013 at 7:20pm*

**Math**

Rob colored 1/4 of a rectangle. What is another way to name 1/4?
*Monday, April 15, 2013 at 7:17pm*

**Math**

Lois brought 6 gallons of milk for the soccer team they drank 10 quarts of the milk. How many quarts of milk were left over ?
*Monday, April 15, 2013 at 5:13pm*

**Math**

A customer is buying a $100 drill and two $15 drill bit stes. The customer uses a $50 gift card for a portion of thier bill. How much cash will the customer pay (before taxes)?
*Monday, April 15, 2013 at 4:43pm*

**5th grade math**

I dont get it! /is 20 times 5/6 greater than or less than 20
*Monday, April 15, 2013 at 4:41pm*

**math**

what is 63% rounded to the nearest whole percent.
*Monday, April 15, 2013 at 4:26pm*

**Math**

a group of students ate a whole pie each student ate exactly 1/5 of the pie how many students shared the pie
*Monday, April 15, 2013 at 4:20pm*

**math**

how to do pre algebra pizzazz page e 28
*Monday, April 15, 2013 at 4:18pm*

**Math-Steve**

8. A gas station charges $2.19 per gallon of gas. Use function notation to describe the relationship between the total cost C(g) and the number of gallons purchased g. a. C(g) = -2.19 g b. g = 2.19C(g) c. C(g) = g + 2.19 d. C(g) = 2.19g I think its C.
*Monday, April 15, 2013 at 3:53pm*

**math**

how many quarts are in a liter
*Monday, April 15, 2013 at 3:45pm*

**math statitics**

The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are test results, ...
*Monday, April 15, 2013 at 3:08pm*

**math**

on the test had 50 items gertrude got 34 out of the first 40 correct. if she received a grade of 80% on the test how many of the last 10 did she have correct
*Monday, April 15, 2013 at 2:47pm*

**math**

what is the general term of this sequence 1,2,4,8....4096
*Monday, April 15, 2013 at 2:26pm*

**Math**

if the last digit of a weight measurement is equally likely to be any of the digits 0 through to 9.what is the probability that the last digit is greater than or equal to 5 ?
*Monday, April 15, 2013 at 2:21pm*

**Math**

Given that the equation x^2(3-x) has 3 real solutions of k, give the set of possible values for k.
*Monday, April 15, 2013 at 1:53pm*

**Math**

A container holds 12 red marbles, 10 blue marbles, and 14 green marbles. You will randomly select two marbles without replacement. -Fill in the probabilities on each branch of the tree diagram. Use the boxes with the fraction bars already provided. -Use the tree diagram to ...
*Monday, April 15, 2013 at 1:35pm*

**Math**

Suppose that you invest $6384 in an account that earns interest at an APR of 4.6%, compounded monthly. Determine the accumulated balance after 9 years.
*Monday, April 15, 2013 at 11:22am*

**math**

Graph the function f(x)=6-1/(x+4)^2 using transformations. State: a.the domain b.the range c.the asymptotes i do not get this at all, i am totally lost! please help!!!
*Monday, April 15, 2013 at 10:00am*

**math**

find the verticle, horizontal, and oblique asymptotes, if any, for the given rational function: g(x)=x^4-81/3x^2-9x I feel like such a dork becaue i have no clue how to do this, can someone please help me????
*Monday, April 15, 2013 at 9:57am*

**Math**

the ratio of circumference of a circle to its diameter is 22:7. what is the circumference of a curcle of the diameter 15.6m?
*Monday, April 15, 2013 at 6:24am*

**math**

a man sell two articles at the same price on one he earn 25% profit and on other he incures 25% loss overall he gets?
*Monday, April 15, 2013 at 4:48am*

**Math**

For a Normal distribution with mean, mu=2, and standard deviation, sigma = 4, 70% of all observations have values between x and y . (Round to 4 decimal places.)
*Monday, April 15, 2013 at 1:56am*

**math**

A bag contains 5 green marbles, 3 yellow marbles and 2 red marbles. What is the probability of picking three green marbles from the bag without replacement?
*Monday, April 15, 2013 at 12:59am*

**Math **

What is the probability that a multiple of two will occur with one roll of a twenty-sided die numbered from 1-20?
*Monday, April 15, 2013 at 12:31am*

**Math**

The mean time to complete a certain stat quiz is 25 minutes, with a standard deviation of 5 minutes. Find the probability of a student taking. 1.) less than 15 minutes. 2.) Between 15 and 25 minutes. 3.)more than 25 minutes.
*Sunday, April 14, 2013 at 11:41pm*

**math**

A baseball player swings and hits a pop fly straight up in the air to the catcher. The height of the baseball in meters t seconds after it is hit is given by a quadratic function h(t) = −4.9t^2 + 9.8t + 1. What is the maximum height of the baseball?
*Sunday, April 14, 2013 at 10:58pm*

**Math**

From a survey of 100 college students, a marketing research company found that 60 students owned iPods, 50 owned cars, and 20 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)? 1 students (b) How many students do not own either a car...
*Sunday, April 14, 2013 at 10:58pm*

**math**

Triangle ADE is inside rectangle ABCD. Point E is half way between points B and C on the rectangle. Since AB is 8 cm and side AD is 7 cm. 1. what is the area of triangle ADE? 2. what is the ratio of the area of the triangle ABE to the area of triangle ADE? 3. What is the ratio...
*Sunday, April 14, 2013 at 10:05pm*

**math**

Let 2^a = 5 and 2^b = 7. Using exponent rules, solve the equation in terms of a and b. 0.4^x = 343
*Sunday, April 14, 2013 at 9:28pm*

**Math**

Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)/(sec^2 x))-1 = (f(x))^2 f(x)= ??
*Sunday, April 14, 2013 at 9:28pm*

**MATH**

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???
*Sunday, April 14, 2013 at 9:18pm*

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