Friday

August 22, 2014

August 22, 2014

Total # Posts: 181

**math**

35. If b is postive integers less than 400 and more than 100, then how many integer pairs (a,b) satisify the equation a/b=2/9?
*August 21, 2014*

**math**

12. For what value of x will x and 120 have the same mean as 34 and 53?
*August 21, 2014*

**math**

11.What is the slope of the line whose equation is 4y-6x+16=0?
*August 21, 2014*

**math**

25. If the area of the base of a circular pool is 942 square yards. What is its radius?(use pie=3.14)
*August 21, 2014*

**math**

23. There are two telephone companies provide home phone service in New York City. Company A charges $25 monthly fee and $0.10 for one minute after 30 minutes phone call. Company B charges $20 monthly fee and $0.12 for one minute after 30 minutes phone call. By what minutes, ...
*August 21, 2014*

**math**

If 4 coins are tossed simultaneously, what is the probability of getting exactly 3 tails?
*August 20, 2014*

**math**

21. If 6x+4y=40 and 7y/4x=7, what is value of x^2?
*August 20, 2014*

**math**

5. How many positive integers less than 36 are equal to 4 times an odd integers?
*August 20, 2014*

**math**

8/16575
*August 20, 2014*

**math**

9. Three cards are drawn at random from a standard deck of 52 card, without replacement. What is the probability of drawing a 7, drawing a 9, and a king in that order?
*August 20, 2014*

**math**

6. In a survey of 100 people, 73 owned only stocks. Six of the people invested in both stocks and bonds. How many people owned bonds only? This is what I did: 73+6=79 100-79=21
*August 20, 2014*

**math**

28. If the ratio of a to b is 4 to 5 and the ratio of a to c is 6 to 11, what is the ratio of b to c?
*August 20, 2014*

**math**

24. What is least common multiple of 2,3,4,5,6, and 7? This is what I did: 2x3x2x5x2x3x7=2520
*August 20, 2014*

**math**

On a coordinate system, the segment joining the points (3,8) and (9,16) has the same midpoint as the line segment joining the points (8,11) and (x,13). What is the value of x? I think x=3
*August 20, 2014*

**math**

Is it 4?
*August 19, 2014*

**math**

58. Let GCF (x,y) represent the greatest common factor of x any y. If p is a positive even integer less than 11, for what value of p does GCF (p^2,81) have the greatest value?
*August 19, 2014*

**math**

52. The mean of twenty numbers is 34. If four of the twenty numbers have a mean of 45, what is the mean of the other sixteen numbers? This is what i did: Is this right? 20x34=680 4x20x45=3600 3600+680/16=267.5 answer:267.5
*August 19, 2014*

**math**

47. If x=y-7, hat is the value of 6x-6 in terms of y?
*August 19, 2014*

**math**

wait, if its 5 years ago does it mean its 40?
*August 19, 2014*

**math**

50. 5 years ago, Jack was six less than twice of Kelly's current age. If Kelly was 20 years old three years ago, how old will be jack in 10 years? This is what I did: I got 55 J=(2k-6)+5 K=23 (2x23-6)+5 =45 45+10=55
*August 19, 2014*

**math**

49. How many integers between 70 and 105 have a reminder of 2 when divided by 15?
*August 18, 2014*

**math**

59. The scale on a map is 1 inch= x miles. What is the distance, in inches, on the map between two cities that are m miles apart?
*August 18, 2014*

**math**

14. According to the Texas Parks and wildlife Department, there are about 40 white-tailed deer per square mile in each of 35 Texas counties. A rectangular area on a ranch in one of these countries measures 2.25 miles by 6.7 miles. Which of the following is closest to the ...
*August 14, 2014*

**math**

19. Which statement describes the relationship between the line graphs of the equations below? y=-2x+4 y=0.5x+4 A.The line graph are the same line. B.The line graph are parallel lines. C.The line graph are perpendicular lines. D.The line graphs intersect, but are not ...
*August 14, 2014*

**math corrections**

16. Carlos sells video games on Web site. The cost for his web site is $75 per year. Carlos sells each video game for $25. What inequality can Carlos use to determine g, the number of video games he must sell to make a profit of at least $50 per year? A.100g less than and ...
*August 14, 2014*

**math corrections**

14. According to the Texas Parks and wildlife Department, there are about 40 white-tailed deer per square mile in each of 35 Texas counties. A rectangular area on a ranch in one of these countries measures 2.25 miles by 6.7 miles. Which of the following is closest to the ...
*August 14, 2014*

**math corrections**

10. You have a nickel, a dime, a quarter and a fifty-cent piece. A clerk shows your several articles, each different price and any one of which you could purchase with your coins without receiving change. What is the largest number of articles he could have shown you? A.8 B.10...
*August 14, 2014*

**math corrections**

300
*August 14, 2014*

**math corrections**

9. A rectangular field 50 meters in width and 120 meters in length is divided into two fields by a diagonal line. Find the length of fence in meters required to enclose one of these fields? A.130 B.170 C.180 D.200 E.300 Choice A is wrong.
*August 14, 2014*

**math test review**

15. Scott knows that the area of the center circle of the basketball court in the school gym is 110 square feet. He wants to find the radius of the center circle of the basketball court in the school gym. He determines that the square of the radius is 34 feet. What is the BEST...
*August 13, 2014*

**math test review**

5. A teacher prepares 12 sheets of colored paper for each of sheets her 25 pupils. If 5 pupils are absent, how many sheets of colored paper can each pupil now have? A.10 B.15 C.18 D.20 E.24 I think the answer is A.
*August 13, 2014*

**math test review**

2. If 4% of motorists on the New Jersey Turnpike leave at a certain exit and 5% of these go to one particular motel for lodging, out of every 10,000 motorists how many motorists may be expected to go to this motel? A.2 B.10 C.20 D.100 E.200
*August 13, 2014*

**math corrections**

is the answer 10?
*August 13, 2014*

**math corrections**

There are 10 men spent 10 days finishing one project. If we need to finish the project by 5 days, how many more men do we need? A.1 B.5 C.10 D.15 E.20 Choice E is wrong, i'm starting to think that choice B is the answer.
*August 13, 2014*

**math test review**

7.There are 400 couples competing in a dance contest. After each half hour one-fourth of the contests-ants are eliminated. How many couples will remain eligible fore the prize after the first hour? A.300 B.250 C.225 D.200 E.150
*August 13, 2014*

**math**

25. Julia is casting a play with 3 lead roles. Five students have tried out for each part. As long as no students have tried out for more than one part, how many different ways can Julia cast the lead roles? A.60 B.80 C.125 D.25 E.50
*August 11, 2014*

**math**

2. Five hundred people, and no others, gathered in front of the White House on certain day to protest the government's immigration policies. Of these 500 people, 60% wore red arm bands showing solidarity with the immigrants. Of this 60%, 20% carried signs. How many people ...
*August 11, 2014*

**math**

1. A box contains a number of items, among them exactly 10 hats, 3 books, and 7 statues. The remaining 1/3 of the items are all blue T-shirts. What percent of the items in the box are books?
*August 11, 2014*

**math corrections**

11. If 8x=(4y)^2 and x=8, where y is an integer, which one can be the value of 4y? A.-6 B.4 C.2 D.-4 E.-8
*August 11, 2014*

**math corrections**

30. The probability that Rob wins is 2/7 the probability that Rob loses,what is the probability that Rob loses? A.2/7 B.5/7 C.9/7 D.7/9 E.2/9 Choice B is wrong.
*August 11, 2014*

**math**

If v,w,x,y, and z are consecutive multiples of 3, counting from smallest to largest. What is the value of v-w-x+y in terms of z? A.4z-4 B.-12 C.-30 D.0 E.4z
*August 10, 2014*

**math**

4. A board jumper makes an average standing jump of 8 feet. In how many jumps will he cover y yards? I got B for this question. A.3y/8 B.8/3y C.24y D.1/24y E.24/y
*August 7, 2014*

**math**

3. A diamond ring valued at $7000 was insured at 80% of its value. What was the premium, if the rate was $6 per 1000? A.$3.36 B.$4.20 C.$33.60 D.$42.00 E.$336.00
*August 7, 2014*

**math**

2. A grocer paid $2600 for secondhand delivery truck. At end of 4 1/2 years he was allowed $440 for it toward the purchase of a new truck. What was the average yearly amount of depreciation? A.$220 B.$450 C.$480 D.$550 E.$2200
*August 7, 2014*

**math**

I have some problems with these questions: 3. A hat was priced at $10.80. During a sale, the hat sold for $9.18. What was the rate of discount on the hat? 4. A man's tax on his home is $1,952. The tax rate is $3.20 per $100 of assessed value of the home? I think I need to ...
*August 6, 2014*

**math test review**

7. Given that w=7r+6r+5r+4r+3r. Which of the terms listed below may be added to w to the resulting sum will be divisible by 7 for every positive integer r? A.7r B.6r C.5r D.4r E.3r
*August 6, 2014*

**math**

A refrigerator was marked down in a price from $249.50 to $199.60 during a sale. What was the rate of discount?
*August 6, 2014*

**math corrections**

in question 24,it is 300 revolution per minute, not 30 revolution per minute.
*August 6, 2014*

**math corrections**

2. A pair of pants sell for $6 more than 75% of its price. What is the price of the pants?
*August 6, 2014*

**math corrections**

its 300 revolutions per minutes. I made a mistake
*August 6, 2014*

**math corrections**

I got a few questions wrong and i would like some explanations on these question: 2. A pair of pants sells for $6 more than 75% of its price of the pants? A.$12 B.$18 C.$20 D.$24 E.$36 Choice E is wrong. 4. What is the wall thickness, inches, of a tube with an outer diameter ...
*August 6, 2014*

**science**

Explain why Na2CO3 against HCL titration using phenolphthalein indicator does not go to completion but stops at the NaHCO3 stage.
*November 25, 2013*

**social studies**

what were roles of men in Iroquois league?
*November 16, 2013*

**Vector Calculus**

Thermodynamics texts use the relationship (dy/dx)(dz/dy)(dx/dz) = -1 Explain the meaning of this equation and prove that it is true (Hint: Start with a relationship F(x,y,z) = 0 that defines x = f(y,z), y = g(x,z), and z = h(x,y) and differentiate implicitly)
*October 4, 2013*

**math**

not just answer and tell me how to do it
*August 4, 2013*

**math**

The length of the rectangle is 20 m and the width of the rectangle is 10 m. Inside the rectangle have two circle, If we know that both circle are the same and they are tangent to the rectangle? What is the shaded area? A. 200 - 20 pi m^2 B. 200 - 50 pi m^2 C. 100 pi - 200 m^2 ...
*August 4, 2013*

**math**

The fraction 5Y3X/2Y8, in which X and Y stand for unknown digits, represents a division which results in a quotient that is whole number. Which of the following is (are) true? not just and answer please I. X may equal 2. II. X may equal 6 or 0. III. X may equal 4. A.I only B....
*August 4, 2013*

**math**

I. X may equal 2. II. X may equal 6 or 0. III. X may equal 4. A.I only B.II only C.III only D.I and III only E.I,II,and III
*August 3, 2013*

**math**

The fraction 5Y3X/2Y8, in which x and Y stand for two unknown digits, represents a division which results in a quotient that is a whole number. Which of the following is (are) true? 1. X may equal 2. 11. X may equal 6 or 0. 111. X may equal 4. not just and answer, i don't ...
*August 3, 2013*

**math**

x + 2y = 1 1/3 +x - y =+1/3 3y = ? not just and answer A.0 B.- 1/3 C.1/3 D.1 E.1 2/3
*August 3, 2013*

**math**

but i'm not so good at subsets can you explain, so i can maybe understand in a different way.
*August 3, 2013*

**math**

which of the following sets is a subset of A? A:5,25,15,10,20,30 not just and answer A.5,15,60 B.10,20,50 C.5,10,20 D.15,30,60 well i got the answer C
*August 3, 2013*

**math**

thanks
*August 3, 2013*

**math**

mm, less
*August 3, 2013*

**math**

so it is 4315-1345= 2970
*August 3, 2013*

**math**

If in the number 4315 the digits representing tens and thousands were interchanged, the value of the new number formed in relation to the original number would be... explain it out please A.unchanged B.280 more C.280 less D.2970 more E.2970 less
*August 3, 2013*

**math**

if 8 men can do a job in days, what is the percentage increase in number of days required to do the job when 2 men are released? not just an answer please. A.16 2/3% B.25% C. 33 1/3% D.40% E.48%
*August 3, 2013*

**math**

there is 5 digits, you count wrong.
*August 3, 2013*

**math**

How many 5-digit even numbers can be made using the digits 2, 4, 6, 7, and 8, if digits cannot be repeated?
*August 3, 2013*

**math**

If digits cannot be repeated, how many four-digit numbers can be made using the digits 1, 3, 5,7, and 9 ?
*August 3, 2013*

**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 not just answer, please tell me how to do it
*August 3, 2013*

**math**

To obtain a final average of 80 % in a certain subject, what grade must a student earn in a test after having an average of 77.5 % in four examinations ?
*August 3, 2013*

**math**

Find the vertex angle of an isosceles triangle if it exceeds each base angle by 30 degree.
*August 3, 2013*

**math**

answer : 42
*August 1, 2013*

**math**

There were 100 pairs of socks 30% of them were sold on Monday and 40% of the remainder were sold on Tuesday. How many pairs of socks were left?
*August 1, 2013*

**math**

If 3 "A" cans can hold 4 "B" cans and 3 "B" cans hold 5 "C" cans than how many "A" cans are need to hold 20 "C" cans ?
*August 1, 2013*

**math**

The area of a triangle is 80 square meters and the base measures 20 meters. Find the number of meters in the measure of the altitude.
*July 31, 2013*

**math**

thank you
*July 31, 2013*

**math**

The supplement of an angle measures 11 times its complement. Then the measure of the angle is: (A) 9 degree (B) 99 degree (C) 81 degree (D) 90 degree (E) none of these not just answer, please tell me how to do it
*July 31, 2013*

**math**

Phil has 20 coins, nickels,dimes, and quarters, totaling $2.30. If he has twice as many nickels as quarters, how many quarters does Phil have?
*July 31, 2013*

**math**

The length of a rectangle is three times the length of a side of a square and the width of the rectangle is two less than the side of the square. If the perimeter of the rectangle is twenty eight more than the perimeter of the square, find the length of a side of the square...
*July 30, 2013*

**math **

The longer leg of a right triangle is 3 more than the shorter leg. The Hypotenuse is 6 more than the shorter leg. If the perimeter of the triangle is 36, find the length of each side of the right triangle. [ Only an algebraic solution will be accepted ] not just the answer , ...
*July 30, 2013*

**math**

Number of cubic inches in volume of cube, Number of square inches in surface area of cube. which one is greater or equal?
*July 30, 2013*

**math**

(1/2)X - (1/2)Y = 4 1. Slove for X 2. Slove for Y not just an answer please
*July 30, 2013*

**math**

If shipping charges to certain point 62 cents for the first five ounces and 8 cents for each additional ounce, the weight of a package, in pounds, for which the charges are $1.66 is not just an answer please A.7/8 B.1 C.1 1/8 D.1 1/4 E.1 1/2
*July 29, 2013*

**math**

One wheel has a diameter of 30 inches and a second wheel has a diameter of 20 inches. The first wheel traveled a certain distance in 240 revolutions. In how many revolutions did the second wheel travel the same distance? not just an answer please A.120 B.160 C.360 D.420 E.480
*July 29, 2013*

**math**

In a 3 hour examination of 350 questions, there are 50 mathematics problems. If twice as much time should be allowed for each problem as for each of the other questions, how many minutes should be spent on the mathematical problems? not just and answer please A.45 B.52 C.60 D....
*July 29, 2013*

**math**

thank you
*July 28, 2013*

**math**

If a circle had a circumference of 8.4 cm, what is the diameter of the circle to the nearest 0.1 cm?
*July 28, 2013*

**math**

A storage shed is in the shape of a square. A builder increases the length of one side of the shed by three feet and decreases the length of an adjacent side by two feet. The shed is now a rectangle with a perimeter of 70 feet. What is the measure of a side of the original ...
*July 27, 2013*

**math**

The length of a side of a square is fifteen less than four times the length of a side of a second square. The perimeter of the two squares differ by 24 inches. Find in inches, the length of a side of the smaller square. [ Only an algebraic solution will be accepted ]
*July 27, 2013*

**math**

The base of an isosceles triangle is four less than the sum of the lengths of the legs. If the perimeter of the triangle is 44, find the length of the three sides of the triangle.[ Only an algebraic solution will be accepted ]
*July 27, 2013*

**math**

The dimensions of a piece of fabric are 45" by 75". Find the area of the largest square that can be cut from this piece of fabric.
*July 25, 2013*

**math**

32x^3y^2z^4 / 4x^4yz^6 =
*July 21, 2013*

**math**

may be the question is wrong, forget it.
*July 21, 2013*

**math**

There is no typo, that how the question is
*July 21, 2013*

**math**

Jo saw a dress regularly priced at 78%. It was on sale at a discount of 30%. Find the amount of discount and the sale price.
*July 21, 2013*

**math**

What percent of the total number of states does each of the 50 states represent?
*July 19, 2013*

**math**

Use exponents to express the volume of a cube with edges of length 3y.
*July 18, 2013*