Branches of Math
Recent Math Questions
The ratio of boys to girls in a class room was 9:8. Half of the girls left the classroom, and then there were 15 more boys than girls. A. How many children were in the classroom in the beginning B. How many girls left the classroom?
Thursday, August 7, 2014 at 8:41pm
The base of a triangle is 11. The other two sides are integers and one of the sides is twice as long as the other. What is the shortest possible length of a side of the triangle?
Thursday, August 7, 2014 at 8:05pm
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
Thursday, August 7, 2014 at 7:37pm
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
Thursday, August 7, 2014 at 5:31pm
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
Thursday, August 7, 2014 at 5:20pm
On Saturday, Alberto filled his right rear tire with air at the gas station around the block from where he lives. Three days later the tire pressure in that tire measured 26 psi (pounds per square inch). On the following Saturday, one week after he had originally filled the ...
Thursday, August 7, 2014 at 4:35pm
The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of gold fish. The shopkeeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish in the end. How many guppies were in the shop in the beginning?
Thursday, August 7, 2014 at 2:44pm
The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of gold fish. The shoe keeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish she added was equal to the number of the guppies she replaced. There...
Thursday, August 7, 2014 at 2:00pm
On a plane trip, baggage over 41 pounds is charged at the rate per pound of 1% of the one-way fare. The charge for a bag weighing 52 pounds on a trip where the one-way fare is $98 is:
Thursday, August 7, 2014 at 1:37pm
At the beginning of the summer molly decided to add a little money into her sayings account every week. After seven weeks her account had $175. At the end of 15 weeks her account had $375. Assume that she put the same amount of money into her account every week and will ...
Thursday, August 7, 2014 at 12:46pm
two points A and B 80 ft. apart lie on the same side of a tower and in a horizontal line through its foot. if the angle of elevation of the top of the tower at A is 21 degree and B is 46 degree, find the height of the tower.
Thursday, August 7, 2014 at 6:33am
A Circle has an area of 25 pie centimeter squared.If one side of the square is the same length as the radius of the circle,what is the perimeter of the Square? F 20 cm G 25 cm H 50 cm J 75 cm K 100 cm
Thursday, August 7, 2014 at 2:44am
A rectangle has a length of 6 cm in an area of 24 cm². If the radius of a circle is as long as the width of the rectangle ,what is the circumference of the circle?
Thursday, August 7, 2014 at 2:40am
A square measures 12 cm x 12 cm and is divided into four equal squares.If equal circles inscribed within each of the four squares, what is the circumference of each circle ?
Thursday, August 7, 2014 at 2:38am
The approximate distance,S, in feet that an object falls in t seconds when dropped from a height can be found by using the formula S = 16t^2.In 8 seconds, the object will fall a. 256 feet b. 1,024 feet c. 1,084 feet d. 2,048 feet e. 15,384 feet please answer and explain
Wednesday, August 6, 2014 at 11:36pm
A golf ball can travel 170 mph. This is 10/7 times the fastest speed recorded for a hockey puck. What is the record speed for a hockey puck? Make and equation and solve.
Wednesday, August 6, 2014 at 10:18pm
A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove 1 marble at a time, randomly, what is the minimum number that you must remove to be certain that you have at least 2 marble of each color? I guessed the answer was 18 and it was correct but I don't know ...
Wednesday, August 6, 2014 at 9:13pm
1.Sharon drove 188.3 miles to see a softball game. If she was driving for 3 1/2 hours,what was her average rate of speed? 2.Kat worked 23 hours last week babysitting. She earned $126.50. What was her rate of pay?
Wednesday, August 6, 2014 at 6:51pm
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 ...
Wednesday, August 6, 2014 at 6:36pm
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
Wednesday, August 6, 2014 at 5:52pm
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 ...
Wednesday, August 6, 2014 at 5:26pm
Ahmed earns $1.50 for every video game he sells. When he sells one carton of 30 video game, he earns an additional $10. What is the minimum number of video games he has to sell in order to earn $450?
Wednesday, August 6, 2014 at 3:11pm
One model of Earth's population growth is , where t is measured in years since 1990, and P is measured in billions of people. Which of the following statements are true?
Wednesday, August 6, 2014 at 1:03am
I am trying to figure out how to Evaluate the polynomial resulting from step 1 using: P = $200 and r = 10%, and also with P = $5670 and r = 3.5% am trying to figure out where I start
Tuesday, August 5, 2014 at 10:03pm
Which of the following represents the zeros of the function g(x) = x 3 - 9x 2 + 2x + 48? A. x = 8, x = 2, and x = 3 B. x = 8, x = 2, and x = 3 C. x = 6, x = 4, and x = 9 D. x = 6, x = 4, and x = 9 I need help
Tuesday, August 5, 2014 at 9:08pm
Arlan needs to create a box from a piece of cardboard. The dimensions of his cardboard are 10 inches by 8 inches. He must cut a square from each corner of the cardboard, in order to form a box. What size square should he cut from each corner, in order to create a box with the...
Tuesday, August 5, 2014 at 8:37pm
An architect has allocated a rectangular space of 275ft^2 for a square dining room and a 14ft wide kitchen. Find both the width of the square dining room and the length of the entire rectangular space.
Tuesday, August 5, 2014 at 8:31pm
The number of tickets sold each day for an upcoming performance of Handel,s Messiah is given by N(x)=-0.4^2+8.8x+10, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
Tuesday, August 5, 2014 at 8:28pm
For the car loan described, give the following information. A newspaper advertisement offers a $4,500 used car for nothing down and 36 easy monthly payments of $157.62. (a) amount to be paid
Tuesday, August 5, 2014 at 6:28pm
The length of a rectangle is given by 2t + 2 and its height is √t, where t is time in seconds and the dimensions are in centimeters. Find the rate of change of the area with respect to time. A'(t)=
Tuesday, August 5, 2014 at 5:08pm
Fun fact: there are only two in that are equal to the sum of their factorials of their digits. (Ex 145: 1!+4!+5!= 1+24+120=145 First one to find the other one wins
Tuesday, August 5, 2014 at 2:07am
Maria, who has been a computer consultant for the past 5 years, has 100 regular customers. Her standerd fee is $90 per hour. She decided to raise her fees, and folowing some research and based on her previous experience, she expects that she will lose a customer for every $1 ...
Monday, August 4, 2014 at 11:39pm
If 2a = 3b, 1/3c = 6b^2, and b > 0, what is c in terms of a? The answer choices are: (A) 8a^2 + 6 (B) 8a^2 + 12 (C) 12a^2 + 6 (D) 18a^2 + 6 (E) 18a^2 + 12 Thank you!
Monday, August 4, 2014 at 10:48pm
Mang jose wants to make a table which has an area of 8 m^2. The length of the table has to be 2 m longer than the width. 1. if the width of the table is p meters what will be its length? 2.form a quadratic equation that represents the situation? 3.find the solution from the ...
Monday, August 4, 2014 at 10:13pm
A tire company determines that to manufacture a certain type of tire, it costs $9000 to set up the production process. Each tire that is produced costs $21 in material and labor. The company sells this tire to wholesale distributors for $49 each. (a) Find a linear function C ...
Monday, August 4, 2014 at 9:11pm
math test review
16. If the base of a right triangle is 8 (square root)2 and the hypotenuse is 18, what is the area of the triangle? A.14 B.14 square root 2 C.56 square root 2 D.64 E.64 square 2
Monday, August 4, 2014 at 8:00pm
In set of 30 different positive integers, every number is even and/or a multiple of 3. If 22 of these numbers are even and 15 are multiple of 3, then how many of these numbers are multiple of 6?
Monday, August 4, 2014 at 7:54pm
10.Thirty students in a chemistry class took a test on which the overall average score was 78. If the average score for 15 of those students was 85, what was the average score for the remaining members of the class? I know that "average" means dividing, but i'm ...
Monday, August 4, 2014 at 7:49pm
9. In Mr.chin's math class there were g girls and b boys. The number pf girls was 5 less than twice the number of boys. What is the value of g in terms of b? this is what I have so far: 2n-5
Monday, August 4, 2014 at 7:46pm
Ronelio invests $29,000 in two one-year certificates of deposit. One certificate pays 4%, and the other pays 4.75% simple interest annually. (a) Construct a model for the total interest I(x) Ronelio earns in one year on his investments. (Let x represent the amount invested at ...
Monday, August 4, 2014 at 6:54pm
Henry Devine bought a new dishwasher for $320. He paid $20 down and made 10 monthly payments of $34. What actual yearly interest rate did Henry pay? A. 29.09 B. 68.75End of exam C. 14.55 D. 34.38 Please explain to me
Monday, August 4, 2014 at 4:21pm
The gross income of Ginger Hughes is $215 per week. Her deductions are: $15.16, FICA tax; $29.33, income tax; 2% state tax; 1% city tax; and 3% retirement fund. What is her net income? Please explain to me
Monday, August 4, 2014 at 3:27pm
Jan Quint earns $7.00 an hour at her job and is entitled to time-and-a-half for overtime, and double time on holidays. Last week she worked 40 hours of regular time, 9 hours of overtime, and 12 hours of holiday time. How much did she earn last week? Please explain this to me
Monday, August 4, 2014 at 3:25pm
Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet? please explain to me
Monday, August 4, 2014 at 3:23pm