Saturday

April 30, 2016
Total # Posts: 684

**math**

A pulley whose diameter is 9 inches is connected by a belt to another pulley whose diameter is 6 inches. If the larger pulley runs at 1200 revolutions per minute, at how many revolutions per minute does the smaller pulley run? a. 800 b. 1080 c. 1600 d. 1800 e. 2000 please ...
*April 23, 2014*

**math**

sorry , actuly no
*April 23, 2014*

**math**

yes
*April 23, 2014*

**math**

In triangle ABC, AF and CE meetin D. If AE=EB, BF=FC, then AD x CD/DF x DE equals a. 1 b. 2 c. 4 d. 6 e. 8 please answer and explain
*April 23, 2014*

**math**

a-x=1 b+1=x ab=? a. x^2-1 b. x^2 c. (x+1)^2 d. (x-1)^2 e. X^2+1 I don't know how to do it, any body can answer this question and step by step tell me how to do it, thank you
*April 23, 2014*

**math**

yes, answer c, thank you
*April 23, 2014*

**math**

wrong, I think is answer c
*April 23, 2014*

**math**

my answer is b, but i am not sure
*April 23, 2014*

**math**

A diver is wroking 30 meters below sea level. Another diver is taking a break on a platform directly above him that is 5 meters above sea level.How far apart are the two divers? a. 5 meters b. 25 meters c. 35 meters d. 40 meters please answer and explain
*April 23, 2014*

**math**

A=pi r^2 = pi 2^2 = 4 pi answer c am i right?
*April 23, 2014*

**math**

Square ABCD is incribed in Circle O. If the side of the square is 2 find the area of Circle O. a. pi b. 2 pi c. 4 pi d. 8 pi e. 16 pi please answer and explain
*April 23, 2014*

**math**

thank you
*April 23, 2014*

**math**

e. 208
*April 23, 2014*

**math**

that is my homewrok, i didn't omit the square root symbol from the last choice
*April 23, 2014*

**math**

The area of a triangle whose legs are in the ratio of 2:3 is 48. The length of the hypotenuse is a. square root 13 b. 8 c. 2 square root 52 d. 12 e. 208 please answer and explain
*April 23, 2014*

**math**

When the population of a town rose from a million to a + x million, the per cent increase was a. x/a % b. 100a/x % c. 100x/x-a % d. x/a-x % e. 100x/a % please answer and explain
*April 23, 2014*

**Precalculus**

Find the exact value of: Cos(inverse tan 4/3 + inverse cos 5/13)
*April 21, 2014*

**Precalculus**

If - radical 2 is squared wouldn't it still turn out to be positive 2?
*April 21, 2014*

**math**

If r = square root 3V/pi*h , by what number must we multiply V in order to multiply r by 9 ? a. 3 b. 9/2 c. 9 d. 18 e. 81 please answer and explain
*April 19, 2014*

**math**

In triangle ABC, angle B = 3, angle A and angle C = 8 angle A. How many degrees are there in angle B ? a. 15 degree b. 30 degree c. 45 degree d. 60 degree e. 120 degree please answer and explain
*April 19, 2014*

**math**

c = 2 pi r 30 = 2 pi r r=15 a= pi r^2 = pi 25^2 = 225 pi thank you
*April 19, 2014*

**math**

Arc AB of circle O contgains 72 degree and is 6 pi long. Find area of circle O. a. 9 b. 36 c. 30 pi d. 225 pi e. 900 please answer and explain
*April 19, 2014*

**math**

The base of triangle ABC is one half the altitude.The altitude of triangle DEF is one half its base. If both triangles are equal in area, what is the ratio of the altitude of triangle ABC to the altitude of triangle DEF ? a. 1:4 b. 1:2 c. 1:1 d. 2:1 e. 4:1 please answer and ...
*April 19, 2014*

**math**

h^2 + 75 = 100 h^2 = 25 h = 5 5 x 5 square root 3 /2 =25 square root 3 /2 = 12.5 square root 3 answer e right?
*April 19, 2014*

**math**

If the hypotenuse of a right triangle is 10 and one leg is 5 square root 3, then the area of the triangle is a. 5 b. 25 square root 3 c. 25 d. 50 square root 3 e. 12.5 square root 3 please answer and explain
*April 19, 2014*

**math**

thank you
*April 19, 2014*

**math**

why use 16v^2 4v x 4v ?
*April 19, 2014*

**math**

The length of a rectangle is represented by the numerical value of 5V^3. If the recrtangle is equal in area to a square with a side represented by 4V, what is the width of the rectangle in terms of V?
*April 19, 2014*

**math**

The length of a rectangle is represented by the numerical value of 5V^3. If the recrtangle is equal in area to a squae with a side represented by 4V, what is the width of the rectangle in terms of V? a. 1/80V^5 b. 4/5V c. 16/5V d. 16/5V^2 e. 5V/16 please answer and explain
*April 19, 2014*

**math**

ABCDEF is a regular hexagon. If the perimeter = 12 find the area of ABCDEF.
*April 18, 2014*

**math**

A cow is attached to a rope in a pasture bordered by two fences ( each 60 feet long) which meet at an angle of 24 degree. If the rope attached to the cow is 15 feet long, over how many square feet can the cow graze? a. 2 pi b. 15 pi c. 30 pi d. 45 pi e. 240 pi please answer ...
*April 18, 2014*

**math**

Katrina's ski boots cost 8% more than her skis.Her ski boots cost $162. Whick equation can be used to find the cost, c, of Katrina's skis? a. c + 0.08c =162 b. c + 0.8c = 162 c. c - 0.08c = 162 d. c - 0.8c = 162 please answer and explain
*April 18, 2014*

**math**

Regis has a bag with 8 tiles numbered 1 through 8. He randomly draws one tile from the bag without looking.Which of the following decribes a likely outcome? a. He selects a tile with the number 0. b. He selects a tile with the number 4. c. He selects a tile with a number ...
*April 18, 2014*

**math**

I don't understand . why answer b 2/10 = 1/5
*April 17, 2014*

**math**

A bag has 4 red marbles, 4 blue marbles, and 2 green marbles. Jessie draws a marble from the bag at random, notes the color, and then replaces the marble.She then draws a second marble at random.What is the probability that both the marbles are green? a. 1/45 b. 1/25 c. 1/5 d...
*April 17, 2014*

**math**

thank you, Steve
*April 17, 2014*

**math**

Jonny wants to place a poster that is 25 1/2 inches wide in the center of a wall that is 60 inches wide. How far from each corner should he place the poster for it to be centered? a. 16 3/4 in b. 17 1/4 in c. 18 1/3 in d. 34 1/2 in my answer is b, anybody can tell me right on ...
*April 17, 2014*

**math**

I count 1 has 14, 2 has 11, 14/0.25=56% so my answer is c, is it correct?
*April 17, 2014*

**math**

I don't understand what the question mean
*April 17, 2014*

**math**

Tia generated a list of random numbers to simulate an experiment based on the waiting times at a supermarker checkout line.The number 1 represents waiting in line less than 5 minutes and the number 2 represents waiting in line 5 minutes or more. 1,1,1,1,2,1,1,1,2,1,2,2,1,2,2,1...
*April 17, 2014*

**math**

thank you ,Ms.Sue
*April 17, 2014*

**math**

my answer is b. but I don't know what is the elevation mean
*April 17, 2014*

**math**

A submarine at an elevation of -35 feet rises 35 feet. What is the elevation of the submarine after it rises? a. -70 feet b. 0 feet c. 35 feet d. 70 feet please answer and explain
*April 17, 2014*

**math**

A map measuring 8" x 10" and drawn to the scale 1" = 50 miles is pasted on a sheet of paper of the same size. Find theleast number of sheets of this paper that would have to be taped together to hold this same map if it were drawn to the scale 2" = 25 miles...
*April 13, 2014*

**math**

my answer is c
*April 13, 2014*

**math**

I know the average cost of gasoline is 35 cents per gallon is ridiculous, but just a question
*April 13, 2014*

**math**

A saleman operates a car which averged 15 miles to a gallon of gasoline.By installing a new carburetor the car improves its mileage by 1/5. How much will he save on gasoline during a year in which he covers 5400 miles, if the average cost of gasoline is 35 cents per gallon? a...
*April 13, 2014*

**math**

answer d.20 thank you
*April 13, 2014*

**math**

A fish tank 1 feet x 1 1/2 feet x 1/2 feet is carefully used to fill a large tank which has a capacity of 15 cubic feet. How many times will the contents of the smaller tank be rquired to be emptied into the larger tank to completely fill the tank? a. 8 b. 10 c. 11 d. 20 e. ...
*April 13, 2014*

**math**

If there are 10 to 15 apples in a basket and there are 2 to 3 baskets in a bushel, what is the maximum number of bushels that can be filled by 900 apples? a. 20 b. 25 c. 30 d. 40 e. 45 please answer and explain
*April 13, 2014*

**math**

There are 216 couples competing in a dance contest.After each half hour one-third of the contest-ants are eliminated. How many couples will remain eligible for the prize after the first hour? a. 24 b. 46 c. 48 d. 96 e. 98 please answer and explain
*April 13, 2014*

**math**

The number of washers 3/32 inch thick that can be cut from a piece of stock 25 1/2 inches long, allowing 1/16 inch for waste for each cut is a. 160 b. 163 c. 260 d. 272 e. 408 please answer and explain
*April 13, 2014*

**math**

Mr.Smith's tax on his house for 1965 was $283.79.If the tax rate for that year was $3.835 per $100 of assessed valuation, for what amount was Mr.Smith's house assessed? a. $10.88 b. $74 c. $740 d. $1088.33 e. $7400 please answer and explain
*April 11, 2014*

**math**

An efficiency expert has calculated that about 9.5% of the articles produced in a manufacturing plant are defective. This is equivalent to expressing the defective articles as a. 9 out of 15 b. 9 out of 50 c. 10 out of 95 d. 19 out of 100 e. 19 out of 200 please answer and ...
*April 9, 2014*

**math**

thank you
*April 9, 2014*

**math**

my answer is e 25/2=12.5 12.5+25=37.5
*April 9, 2014*

**math**

If a workman receives time and a half for overtime, 25 hours of overtime would be the equivalent of how many regular working hours? a. 6 b. 12 c. 18 d. 30 e. 37.5 please answer and explain
*April 9, 2014*

**math**

A father can do a job as fast as two sons working together. If one sone does the job alone in three hours and the other does it alone in six hours, how many hours does it take the father to do the job alone? a. 1 b. 2 c. 3 d. 4 e. 4 1/2 please answer and explain
*April 9, 2014*

**math**

HHow many pupils are there in a class if two pupils remain after four rows of seats are filled, and nine pupils remain after three rows of seats are filled? a. 21 b. 22 c. 28 d. 30 e. 32 please answer and explain
*April 9, 2014*

**math**

Write an equation for the realartionship. Tell what the variables represent. It takes Li 1 hour to drive 65 miles, 2 hours to dirve 130 miles, and 3 hours to drive 195 miles.
*April 8, 2014*

**math word problem PLEASE HELP**

Susan uses 15 rolls of ribbon to decorate 10 wedding baskets. Each roll of ribbon is 5 3/8 yards long. After she decorates the baskets, she decides to cut off another 3/4 yard from the ribbon of each basket. Write and simplify an expression to fin out how much ribbon was used ...
*April 7, 2014*

**math word problem**

Susan uses 15 rolls of ribbon to decorate 10 wedding baskets. Each roll of ribbon is 5 3/8 yards long. After she decorates the baskets, she decides to cut off another 3/4 yard from the ribbon of each basket. Write and simplify an expression to fin out how much ribbon was used ...
*April 7, 2014*

**Math word problems**

Susan uses 15 rolls of ribbon to decorate 10 wedding baskets. Each roll of ribbon is 5 3/8 yards long. After she decorates the baskets, she decides to cut off another 3/4 yard from the ribbon of each basket. Write and simplify an expression to fin out how much ribbon was used ...
*April 7, 2014*

**math**

thank you, Ms. Sue
*April 6, 2014*

**math**

Mr. Benedict left half of his estate to his wife, one-fourth to his son, one-fifth to his daughter and the remainder, $5000 to his college. What is the total amount left by Mr. Benedict? a. $ 9,250 b. $ 10,000 c. $ 16,000 d. $ 50,000 e. $ 100,000 please answer and explain
*April 6, 2014*

**math**

ok , thank you
*April 6, 2014*

**math**

why use 4 x 7
*April 6, 2014*

**math**

A rectangular piece of cardboard 9" x 12" is made into an open box by cutting a 2 1/2" square from each corner and bending up the sides. Find the volume of the box if no allowance is made for overlapping of the edges. a. 70 cu. in. b. 154 3/8 cu. in. c. 195 cu. ...
*April 6, 2014*

**math**

Two stations, A and B, are located six miles apart on a railroad. The rates of cartage of coal are 50 cents per ton per mile from A and 75 cents per ton per mile from B. At a certain consumer's home, located on the railroad between A and B, the cost for cartage is the same...
*April 6, 2014*

**math**

I understand now, like a triangle a^2 + b^2 = c^2 thank you
*April 6, 2014*

**math**

A 50 foot ladder is placed against a building so that it touches a point 40 feet above the ground. The distances ( in feet ) from the foot of the ladder to the building is a. 10 b. 20 c. 30 d. 45 e. 60 please answer and explain
*April 6, 2014*

**math**

is it answer c
*March 26, 2014*

**math**

??? -2, i didn't see answer had -2
*March 26, 2014*

**math**

( - 2 3/4 )+( - 3 1/8 )+( 1 1/8 )+(5)+( - 2 1/4 )= -2
*March 26, 2014*

**math**

A stock that sold for $240 per share before a week began had the following gains and losses in share price over the course of that week. Monday ( - 2 3/4 ), Tuesday ( - 3 1/8 ), Wednesday ( + 1 1/8 ), Thursday ( + 5 ), Friday ( - 2 1/4 ). Suppose an investor bought 100 shares ...
*March 26, 2014*

**Please Help with Physics Problems???????**

A 0.60 kg ladle sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (k = 430 N/m) whose other end is fixed. The ladle has a kinetic energy of 8.6 J as it passes through its equilibrium position (the point at which the spring force is zero...
*March 10, 2014*

**Physics please help?????**

(a) At a certain instant, a particle-like object is acted on by a force F=(2.9N)i-(1.7N)j+(5.7N)k while the object's velocity is v= -(3.2m/s)i+(4.5m/s)k. What is the instantaneous rate at which the force does work on the object? (b) At some other time, the velocity ...
*March 10, 2014*

**Biology**

Sort the terms and phrases as to whether they function in or describe primary growth or secondary growth? Place each term or phrase to the appropriate bin. If the term or phrase describes both primary and secondary growth, place it to the "both" bin. If the term or ...
*March 9, 2014*

**math**

Solving inequalities by multiplying or dividing (-y/6)<2 y___21 1. < 2. > please answer the y ? 21 1 or 2 and how to do it
*March 6, 2014*

**math**

Write an inequality to solve each problem.Then solve the inequality. 1. Marcus wants to buy baseballs.He has $35. What is the most each baseball can cost? 2. Melinda charges $4 per hour for babysitting. Mrs. Garden does not want to spend more than $25 for babysitting. What is ...
*March 5, 2014*

**math**

the ratio of width to length of a television scree in 3:4. What is the width of the screen if the length is 32 inches
*February 23, 2014*

**math**

If the area of a square is eighttimes, by what factor do itsw sides increase in length?
*February 6, 2014*

**math**

The square of negative nonzero integer is equal to four times of its absolute value. What is the integer?
*February 6, 2014*

**math**

The product of a number and 8 has the same value as that number minus 2. what is that number?
*February 6, 2014*

**Linux Mint 16**

01. Your home directory can be represented by what single character? "-" or /home/<username> 02. What is a user friendly text editor which comes pre-installed in Mint that can be used directly in the terminal? 03. My boss just told me that they want to see a ...
*February 1, 2014*

**math**

I don't understand what is the famas of 36, mean area ?
*January 23, 2014*

**math**

If the " famas " of a number is equal to the number of perfect squares less than that number, what is the famas of 36 ? a. 5 b. 6 c. 7 d. 8 e. 9 please answer and explain
*January 23, 2014*

**math ( sets )**

{ 1,2,3, ...., 100 ) How many numbers in the above set are perfect cubes ? a. 2 b. 3 c. 4 d. 5 e. 6 please answer and explain
*January 23, 2014*

**math ( sets )**

{ 30,31,32,....,100 } How many numbers in the above set are divisible by 8 ? a. 9 b. 10 c. 11 d. 12 e. 13 please answer and explain
*January 23, 2014*

**math ( sequence )**

A sequence is generated in which each term is 5 less than the previous term. If the twentieth term is -32, what is the fifteenth term ? a. -57 b. -12 c. -7 d. 2 e. 7 please answer and explain
*January 23, 2014*

**math**

but 8 Quarters, 3 Dimes and 5 Nickels = $2.55
*January 23, 2014*

**math**

John has 8 quarters, 3 dimes,and 7 nickels in the change holder in his car. He uses 16 of those coins, totaling $2.50, to buy some tacos. Which coins remain in the change holder? a. 1 dime, 1 nickel b. 1 dime, 1 quarter c. 1 nickel, 1 quarter d. 2 quarters e. 2 nickels please ...
*January 23, 2014*

**Math**

what does the value of the correlation coefficient tell you about the correlation of the data ?
*January 23, 2014*

**Statistics for Business**

Consider the GPA’s for the following 15 students 3.10, 3.20, 3.49, 2.68, 3.73, 3.39, 3.80, 3.11, 3.10, 3.10, 4.0, 3.89, 2.55, 4.0, and 3.75 a) Compute the max, min, Q1, median 3.9, Q3, IQR, and range 1.45 b) Using the variables from part a), construct a box plot for GPA. ...
*January 19, 2014*

**Statistics for Business**

Consider the following sample of data: 11.2, 28.4, 32.6, 17, 13.5, 2.2, 38, 41.4, 1.9, 14.4, 21.8, 23.8 a) Calculate the max, min, Q1, median, and Q3 b) Calculate the average c) Calculate the standard deviation d) Calculate the variance
*January 19, 2014*

**math ( Terminology )**

The " lumper " of a number is equal to the sum of all the prime numbers less than that number. If the lumper of x is equal to the lumper of x + 3, which of the following is a possible value of x ? a. 7 b. 8 c. 9 d. 10 e. 11 please answer and explain
*January 19, 2014*

**math ( sequence )**

A sequence is generated in which each term is equal to the sum of the two preceding terms, If the first two terms are 1 and 3, what is the sixt term? a. 11 b. 14 c. 18 d. 22 e. 29 please answer and explain
*January 19, 2014*

**math (sets)**

210/9=23.333 so 70-23 =47 answer b ?
*January 19, 2014*

**math (sets)**

{ 1,2.3,..........,210 } How many numbers in the above set are multiples of 3 but not 9 ? a. 46 b. 47 c. 48 d. 69 e. 70 please answer and explain
*January 19, 2014*

**math**

A sequence is generated in which each term is 9 more than the previous term, If the eighth term is 13, what is the fourth term? a. -23 b. -14 c. 40 d. 49 e. 58 please answer and expain
*January 19, 2014*