Branches of Math
Recent Math Questions
The fifth term of an arithmetic sequence is 22 and the 15th term is 62. Find the 100th term and the sum of the first 60 terms. I'm having trouble figuring out how to do this.
Saturday, February 21, 2015 at 6:51pm
Flying to the wind, an airplane takes 4 hours to go 960 km. The same plane flying with the wind takes only 3 hours to make the same trip. Find the speed of the plane and the speed of the wind. I wasnt here for the lesson from my teacher but told me to ask my classmates but ...
Saturday, February 21, 2015 at 5:48pm
Sarah understands that if there are 11 ones, the first 10 move over to the tens column as one unit (i.e., one group of 10). What concept does this understanding represent? A. Renaming B. Regrouping C. Borrowing D. Place value my answer is a
Saturday, February 21, 2015 at 4:51pm
A man who can swim at 5km/h in still water swims towards the east to cross arriver. If the river flows from north to south at the rate of 3km/h a) Calculate: i) The resultant speed ii) The drift b) If the width of the river is 30m, find the time taken, in seconds, for the man ...
Saturday, February 21, 2015 at 4:26pm
The length and breadth of a rectangular paper were measured to be the nearest centimeter and found to be 18 cm and 12 cm respectively. Find the percentage error in its perimeter.
Saturday, February 21, 2015 at 3:51pm
Compute the difference between the ordinary interest and the exact interest for a loan with a principle amount of $1100 at 12 percent for 120 days. I'm getting $0.60 Can you check my work?
Saturday, February 21, 2015 at 1:06pm
The clarkdell school system has three schools. School #1 has 500 students School #2 has 600 students School #3 has 400 students What part of a $15,000 allocation will go to school #2? 15,000 divide by 3= $5,000 Will you check my answer?
Saturday, February 21, 2015 at 12:50pm
Compute the total amount to be repaidon a $1920 loan at 8% for 135 days. Base your calculation on exact interest(365-day year). I'm getting $2335.29. Can you check my work?
Saturday, February 21, 2015 at 12:31pm
an adult manatee eats approximately 100 pounds of aquatic food per day. write an equation to find p, the numbeer of ponds of food an adult manatee eat in d days
Saturday, February 21, 2015 at 11:41am
An adult polar bear walks at an average rate of 5 kilometers per hour. 1. write an equation to find k, the number of kilometers a polar bear bear can walk in h hours. 2.make a table to show the relationship between the number of kilometers k a polar bear can walk and the ...
Saturday, February 21, 2015 at 11:36am
A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian co-ordinates and describe which representation may be more ...
Saturday, February 21, 2015 at 11:30am
Amanda's punch recipe : 7 parts mixed fruit juice, 2 parts of lemonade [Question : how much lemonade will she need to make 180 fluid ounces of punch ?]A .140 Fluid ounces or B. 40 Fluid ounces C. 36 Fluid ounces D. 60 Fluid ounces i think the answer is b am i right
Saturday, February 21, 2015 at 9:33am
A trough (a place where horses and sheep drink water) has the shape of a half-cylinder with length 4 m and radius 20 cm. Water is poured into the trough at a constant rate of 300 cm3/s. At what rate (in cm/s) is the level of the water in the trough rising at the moment the ...
Saturday, February 21, 2015 at 6:31am
A wire of length 4 m is cut in two parts and the first part is bent in the shape of a square, while the second part is bent in the shape of an equilateral triangle. For which lengths of these parts the total area enclosed by the square and the triangle is: a. minimized? b. ...
Saturday, February 21, 2015 at 6:06am
Jill, Meg, and Beth are sisters. Jill is 2 years younger than Meg. Beth is half as old as Meg. Use the same variable to write three algebraic expressions based on this situation. Tell what the variable represents and what each expression represents. THANK YOU!
Saturday, February 21, 2015 at 3:41am
A group of people planned to contribute equally towards a water project which needed Ksh 200,000 to complete, however, 40 members of the group without from the project. As a result, each of the remaining members was to contribute Kshs 2,500. (a) Find the origina number of ...
Saturday, February 21, 2015 at 2:45am
The distance between towns M and N is 280 km. A car and a lorry travel from M to N. The average speed of the lorry is 20 km/h less than that of the car. The lorry takes 1 h 10 min more than the car to travel from M and N. (a) If the speed of the lorry is x km/h, find x (b) ...
Saturday, February 21, 2015 at 2:10am
A roll of paper towels is 10 inches high and 2.5 inches in diameter. How many full squares inches of paper towel can fit on the roll in 15 rotation? * all I need is a formula of this question. Do I use lateral surface area formula or total surface area formula
Friday, February 20, 2015 at 8:44pm
There were 15.37 million licensed drivers in Texas in 2009 and 14.54 million in 2004. Find a formula for the number, N, of licensed drivers in the US as a function of t, the number of years since 2004, assuming growth is (a) Linear N(t)= million drivers (b) Exponential N(t)= ...
Friday, February 20, 2015 at 7:34pm
Three people Fatuma, Ali and Hassan contributed money to start a business.Fatuma contributed a quarter of the total amount and Ali two fifths of the remainder. Hassans contribution was one and a half times that of Fatuma. They borrowed the rest of the money from the bank...
Friday, February 20, 2015 at 5:33pm
Hi! So I asked about this question earlier and I've been trying to solve it with the directions I was given by someone before, but, I'm still confused and keep getting weird numbers. Can someone help me with this? Directions: Find the angle, θ, between the vectors...
Friday, February 20, 2015 at 3:58pm
A line segment with endpoints A(4, 3, 2) and B(5, 6, 1) is translated first 2 units back, 3 units right, and 1 unit up. The image is then translated 7 units to the left. What are the coordinates of B´? A: (3, 4, 0) B: (3, 10, 0) C: (5, 6, ...
Friday, February 20, 2015 at 3:01pm
Math Plz help
A theoretical probability distribution shows the probabilities of all the outcomes except for one. If the total of the shown outcomes is 0.5, then the probability of the missing outcome must be A.) 0.25 B.) 0.2 C.) 0.75 D.) 0.5
Friday, February 20, 2015 at 2:48pm
Hi! I'm really confused on how to do this. Can someone help me? Thanks a bunch! Directions: Use the vectors u = <2, 2>, v = <-3, 4> and w = <1, -2> to find the indicated quantity. a. 3u ∙ v b. (u ∙ 2v)w
Friday, February 20, 2015 at 2:05pm
The length and breadth of a rectangular floor were measured and found to be 4.1 m and 2.2 m respectively. If possible error of 0.01 m was made in each of the measurements, find the: (a) Maximum and minimum possible area of the floor (b) Maximum possible wastage in carpet ...
Friday, February 20, 2015 at 2:05pm
Please help me and show an understanding please, so I see how to figure them out. Lee deposited $28,000 in an interest-bearing checking account that earns 3.5% interest compounded daily. Find the amount after 68 days. a.$183.16 b.$28,180.46 c.$28,183.16 d.$180.46 On April 10th...
Friday, February 20, 2015 at 1:52pm
Cecily Made a poster in the shape of a quadrilateral. All the angles and sides of the poster are congruent. Which of the following names the shape of Cecily's poster Square (a) rectangle (b) pentagon (C) trapezoid (D)
Friday, February 20, 2015 at 12:48pm
You roll a number cube and get a one 7 times, a two 8 times, a three 5 times, a four 9 times, a five 8 times, and a six 5 times. What is the experimental probability of rolling an odd number?
Friday, February 20, 2015 at 12:12pm
A spinner is split up into 4 colored areas of the same size: red, blue, green, and yellow. What is the theoretical probability of the spinner landing on one of these four colors?
Friday, February 20, 2015 at 11:47am
math please help
Dose anyone have ideas for a bedroom using this list? The layout must include the symmetrical placement of two items in the bedroom. Label two acute, two right, and two obtuse angles in the bedroom. Label at least ten different polygons in the bedroom. Be sure to include both ...
Friday, February 20, 2015 at 11:21am
What is a real zero? 1. A solution to a polynomial. 2. A non-imaginary number. 3.An x-intercept of a polynomial. 4. All of the above. The answer is 4, right?
Friday, February 20, 2015 at 10:58am
Mrs monk rented a truck for 3 days. Enterprise charged her $40. per day plus $.25 per miles. The total charge was $142.75. How many miles did she drive the truck? (1) 411 miles (2) 91 miles (3) 251 miles (4) 571 miles
Friday, February 20, 2015 at 9:52am
Mr. lim bought an equal number of red and yellow tulips. He gave away 24 red tulips. Then tere were4 times as many yellow tulips. How mani tulips did he buy? Anna is 14 kg heavier than lily. Sharon is 8 kg lighter than Bona. If lili weights 48 kg, find the total mass of sharon...
Friday, February 20, 2015 at 8:49am
Consider the sequence t0 = 3, t1 = 3^3, t2 = 3^3^3 , t3 = 3^3^3^3, .. , defined by t0 = 3 and tn+1 = 3tn for n ≥ 0. What are the last 2 digits of t3 = 3^3^3^3 ? Show that the last 10 digits of tk are the same for all k ≥ 10
Friday, February 20, 2015 at 7:39am
Two teachers are chosen randomly from a staff consisting 3 women and 2 men to attend a HIV/AIDS seminar. Calculate the probability that the two teachers chosen are: (a) Of the same sex (b) Of opposite sex
Friday, February 20, 2015 at 1:22am
A line L1 passes through point (1, 2) and has gradient of 5. Another line L2, is perpendicular to L2 and meets it at a point where x = 4. Find the equation for L2 in the form of y = mx + c
Friday, February 20, 2015 at 1:19am
you mean: if a sing is 2.5 in height and.2.5. in width will the area of the sign be greater than or less than 2.5 square feet Search Results Questions on Word Proble
Friday, February 20, 2015 at 12:48am
Mrs. Monk rented a truck for 3 days. Enterprise charged her $ 40 per day plus $0.25 per miles. The total charge was $142.75. How many miles did she drive the truck?
Friday, February 20, 2015 at 12:37am
A poor farmer is going to market with his faithful hungry dog, two plump geese to sell, and three bags of corn. The farmer knows that unless he is right there, the dog will eat a goose or a goose will eat some corn. Traveling carefully, he avoids trouble until he comes to a ...
Friday, February 20, 2015 at 12:24am
A pyramid has a height of 5 in. and a surface area of 90 in ^2. Find the surface area of a similar pyramid with a height of 10 in. Round to the nearest tenth, if necessary. A.360 in. ^2 B.180 in. ^2 C.22.5 in. ^2 D.3.6 in. ^2 I think the answer is A but I don't know how to...
Friday, February 20, 2015 at 12:18am
There are 4150 dogs in animal shelters in a particular state. A sample of 100 dogs is taken and 7 of those dogs are white. How many dogs in all the shelters are white?
Friday, February 20, 2015 at 12:13am
A standard deck of cards contains 52 cards. Of these cards there are 13 of each type of suit (hearts, spades, clubs, diamonds) and 4 of each type of rank (A K). Four cards are pulled in order from this deck of 52 playing cards. What is the probability that the cards ...
Thursday, February 19, 2015 at 11:52pm
A square piece of paper is folded in half to make a rectangle. The perimeter of the rectangle is 24.9 cm. What is the side length of the square piece of paper?
Thursday, February 19, 2015 at 11:47pm
A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, it necessary. I know the answer is 3.8 feet because I got it wrong. But why is that the answer. If you cab please help me ...
Thursday, February 19, 2015 at 11:43pm
A standard deck of cards contains 52 cards. Of these cards there are 13 of each type of suit (hearts, spades, clubs, diamonds) and 4 of each type of rank (A K). Two cards are pulled in order, without replacement from this deck of 52 playing cards. What is the ...
Thursday, February 19, 2015 at 11:32pm
Please check 6 more than a number n 6(n)+9 A number m multiplied by 7 7xm 9 less than a number w 9-w The sum of a number a and 9 9+a A number k minus 7 K-7 5 times a number h,plus 12 5*h + 12 5 increased by a number g 5+g
Thursday, February 19, 2015 at 10:38pm
Emma os using connecting cubes to make a rectangular model with a height of one connecting cube. With her cubes she can make the model in exactly 3 different ways. If Emma has more than 12 but fewer than 17 cubes how many cubes does she have
Thursday, February 19, 2015 at 10:01pm
840 stickers were given to 42 children. ⅔ of the children were boys, and each of them received the same number of stickers. Each girl received twice as many stickers as each boy. How many stickers did each girl receive? Explain how you got your answer. Sorry I posted ...
Thursday, February 19, 2015 at 9:44pm
840 stickers were given to 42 children. ⅔ of the children were boys, and each of them received the same number of stickers. Each girl received twice as many stickers as each boy. How many stickers did each girl receive? Explain how you got your answer.
Thursday, February 19, 2015 at 9:32pm
A cylinder is rolled three complete revolutions to create a rectangular shape 32 inches long and 12 inches wide. Write an expression for the area of the rectangle in terms of the diameter of the cylinder. Show how you could use this expression to find a formula for the surface...
Thursday, February 19, 2015 at 8:46pm
There is a slide in the park that is 18 feet long. The ladder to the top of the slide is 7.5 feet long. If the ladder and the slide are perpendicular, what is d, the distance from the top of the slide to the ground? If necessary, round to the nearest tenth
Thursday, February 19, 2015 at 7:45pm
How do you go about solving this? If you got paid $15 for 3 hours of work one day and $45 for 8 hours of work on another day, find your hourly rate of pay for the 2 days
Thursday, February 19, 2015 at 7:31pm
Tell whether the difference between the two integers is always, sometimes, or never positive. 1)Two positive integers. Never 2)Two negative integers. Sometimes. 3)A positive integer and a negative integer. Sometimes. 4)A negative integer and positive integer. Sometimes. Is ...
Thursday, February 19, 2015 at 7:29pm
q. Scott has different chores depending on the season. During the 5 warm months he mows the lawn, which takes about 1 in a half each week. During the 7 cold months, he shovels the snow when needed. This winter he shoveled show for total of 6 hours. How many chores did he do ...
Thursday, February 19, 2015 at 7:22pm
Posted by Marissa on Thursday, February 19, 2015 at 6:32pm. I am having difficulties trying to do rational expressions. I have to use the words Domain, Excluded Value, Set, Factor, and Real Numbers to show how I got the answer. Can someone please help me solve this one? g^2-6g...
Thursday, February 19, 2015 at 6:58pm
If 3000 dollars is invested in a bank account at an interest rate of 9 per cent per year, find the amount in the bank after 5 years if interest is compounded annually
Thursday, February 19, 2015 at 6:35pm
I am having difficulties trying to do rational expressions. I have to use the words Domain, Excluded Value, Set, Factor, and Real Numbers to show how I got the answer. Can someone please help me solve this one? g^2-6g-55 ___________ g
Thursday, February 19, 2015 at 6:32pm
In the formula d = rt, the time t varies inversely with the rate r. A student running at 5 miles per hour runs one lap around the school campus in 8 minutes. If a second student takes 10 minutes to run one lap around the school, how fast is she running?
Thursday, February 19, 2015 at 6:19pm