Branches of Math
Recent Math Questions
A shopkeeper bought cooking fat in 30 one kilogram packets and 20 five hundred packets. She repacked the fat in packets of 125 grams each. How many packets did she get?
Tuesday, January 20, 2015 at 2:57am
A factory produced 65, 160 sweets. The sweets were packed in packets each holding sweets. The cost of each packet was $72. All the packets were then equally put in 15 cartons. What was the cost of the sweets in each carton?
Tuesday, January 20, 2015 at 2:37am
If it takes a tub 20 minutes to fill up when the water is on all the way and 15 minutes to drain, how long will it take for the tub to be completely drained when the water is left all the way on? In 1 hour the tub can fill up 3 times and the tub can drain 4 times. So will it ...
Tuesday, January 20, 2015 at 1:35am
How do I find complex zeros in a an equation if the equation doesn't have the + or - value at the end can th ecomplex zero(s) be made up? I'm getting really confused with complex zeros well zeros in general
Tuesday, January 20, 2015 at 12:24am
f(x)=x64-4x^2+k. Find the values of k so thath the zeros of f satisfy the specified charachteristics. a.four real zeros b.two real zeros, each of multiplicity of two c.two real zeros and two complex zeros d.four complez zeros a.I don't know if this range goes for this or b...
Monday, January 19, 2015 at 11:38pm
tina, troy and nate had a total of 25 equal-sized square tiles to place over a square grid. Tina used 8/25 of the square tiles. Troy used 1/5 of the square tiles. what fraction of the square grid must Nate place the tiles on so that 1/5 of the square grid is not covered.
Monday, January 19, 2015 at 11:19pm
a snail is at the bottom of a well. in the first 10 minutes, the snail climbs 23 7/12 inches. In the next 10 minutes, it climbs 19 5/6 inches. How far is the snail from the bottom of the well after 20 minutes?
Monday, January 19, 2015 at 10:42pm
jeremy puts an empty container under a leaking faucet. In the first hour, 3/8 quart of water collects. In the second hour, 1/6 quart of container of water collects. how much water collects in the container in the two hours?
Monday, January 19, 2015 at 10:14pm
Charlene is feeling a box planter with soil each bag of soil contains enough to fill 500 cubic inches at the base of the blocks planter is a 9 inch square and the sides are 18 inches tall how many bags of soil for growing need
Monday, January 19, 2015 at 9:52pm
Yukio and his 5 friends want to keep in touch during winter vacation. If they each speak to everyone in their group once during the week, how many calls will be made?
Monday, January 19, 2015 at 8:57pm
Find inverse of f if f(x)= x^2-4x+3, (for x is smaller than and equal to 2). First prove that f(x) is one to one in the defined domain of f and then obtain the inverse function. I know how to find the inverse. We just switch x and y. so y=x^2-4x+3 becomes x=y^2-4y+3 Inverse of...
Monday, January 19, 2015 at 7:02pm
At a miniature golf course, the fourth hole involves hitting the ball through a cylindrical tube that falls to a circular green below, as shown in the illustration. The diameter of this green is 76 inches, and the diameter of the hole is 4 inches. Using pi=3.14, determine ...
Monday, January 19, 2015 at 6:59pm
How long will it take for the tub to completely empty with thte drain open and the water running at full speed? Given: it takes 20 minutes to fill the tub and 15 minutes to drain the tub when the water is on all the way, full speed.
Monday, January 19, 2015 at 6:43pm
Write a rational function satisfying the following criteria. vertical Asymptote: x=-1, slant asymptote: y=x+2, zero of the function: x=3 I had f(x)=x^2+3x+2/x+1, that only works for the asymptotes and not the zero can someone please help me figure how to satisfy all three ...
Monday, January 19, 2015 at 6:28pm
Maureen fills a cylindrical tin with sugar cookies for a gift. She plans to put a ribbon around the tin and then attach a bow onto the ribbon as shown in the illustration. The bow itself will take 15 inches of ribbon. If the diameter of the tin is 9 inches, approximately how ...
Monday, January 19, 2015 at 5:38pm
List all of the quadrilaterals with exactly one pair of parallel sides. A. Parallelogram;trapezoid B. Rhombus;parallelogram;rectangle C. Trapezoid D. Rhombas;square;rectangle Is the answer B? Thank you
Monday, January 19, 2015 at 3:57pm
A survey of students determined that 14 drove to school, 28 took the bus, 8 walked, 35 shared a ride and 15 had another means of transportation to school. On a pie chart, the slice representing students who took the bus would be approximately _______ degrees.
Monday, January 19, 2015 at 3:36pm
The function f(x)=x^2. The graph of g(x) is f(x) translated to the right 3 units and down 3 units. What is the function rule for g(x)? I honestly have no idea how to this An example or helping me get through the problem would be great :) Thank you so much :)
Monday, January 19, 2015 at 2:57pm
we have 2 coins: coin 1 comes up with the probability of tails of 2/3 while coin 2 comes up with the probability of tails of 1/3 you dont know which is which so you pick one up at random and flip it . If its tails, you guess that the coin you picked up is coin 1 else you guess...
Monday, January 19, 2015 at 1:22pm
Every night when Samantha came home from work she put any change she had in her pockets into a jar. One day she wanted to know how much change she had in her jar. She noticed that she had two more nickels than twice the number of dimes, and eight fewer quarters than twice the ...
Monday, January 19, 2015 at 1:09pm
grade 7 math
Uniform Motion Related Problem Port A is 25 km downriver from port B. At noon a tugboat leaves port B and travels upstream at 15 kph. At 3 p.m. a hyrodrofoil leaves Port A travelling upstream at 50 kph. At what time will the hydrofoil pass the tugboat?
Monday, January 19, 2015 at 12:02pm
grade 7 math
Uniform Motion Related Problem Jessie has a 15 km head start on Melvin. How long will it take Melvin to catch Jessie if the latter travels at 70 kph and the former at 100 kph?
Monday, January 19, 2015 at 11:57am
grade 7 math
Uniform Motion Related Problem Two planes leave an airport at 2 p.m., one flying south at 450 kph, the other flying north at 675 kph. At what time will they be 3 600 apart?
Monday, January 19, 2015 at 11:54am
grade 7 math
Uniform Motion Related Problem Two cars starting from the same point travel in opposite directions. Car A travels at 80 kph and car B at 110 kph. After how many hours will the cars be 760 km apart?
Monday, January 19, 2015 at 11:51am
grade 7 math
Uniform Motion Related Problem Two cars, 210 km apart, met each other in 2 hours. If one car travelled at 60 kph, at what rate did the second car travel?
Monday, January 19, 2015 at 11:48am
grade 7 math
Uniform Motion Related Problem Chester drove his car at 8:00 a.m. at speed of 45 km/hr. At 9:15a.m. Michael followed with his car. What should be Michael's speed so as to be able to overtake Chester at 1:00 p.m.? How far has Chester travelled when Michael overtook him?
Monday, January 19, 2015 at 11:46am
grade 7 math
Uniform Motion Related Problem A car travelling at 60 kph left town at 9:00 a.m. Another car travelling at 65 kph left the same place half an hour later to overtake the first. At what time did the second car overtake the first?
Monday, January 19, 2015 at 11:41am
grade 7 math
Uniform motion Related Problem Five boy scouts biked to Caliraya lake at 5 km/h. their scout master gave them a ride back home in his pickup car, at 20 kph. Find the hiking time if it 6 hors longer than their riding time.
Monday, January 19, 2015 at 11:38am
Determine the missing value. a) Output value/Efficiency: 100 J Efficiency: 100% Input E = ??? b) Input: 100 J Efficiency: 30% Output E = ?? Output= 30 J c) Output E: 120 000 J Efficiency: 2% Input E= ?? How would I solve for the put value? Thank you!
Monday, January 19, 2015 at 11:09am
Calculate the new coordinates of a block rotated about x axis by an angle of = 30 degrees. The original coordinates of the block are given relative to the global xyz axis system. A(1, 1, 2) B(2, I, 2) C(2, 2, 2) D(1, 2, 2) E(1, 1, 1) F(2, 1, 1) G(2, 2,1) 11(1, 2, 1).
Monday, January 19, 2015 at 2:34am
3 PART Claire and Malia are training for a race A)Claire runs 10 km in 1 hour. How many kilometers does she run in half an hour? In 2 1/2 hours? B)Malia runs 5 miles in 1 hour. How many miles does she run in half an hour? In 2 1/2 hours? C)On Tuesday, Claire and Malia both ran...
Monday, January 19, 2015 at 2:20am
A family has an annual income of 28800. Of this 1/4 is spent for food, 1/5 for housing, 1/10 for clothing, 1/9 for savings, 1/4 for taxes, and the rest for other expenses. How much is spent for housing?
Sunday, January 18, 2015 at 10:55pm
Planner for a festival is trying to decide what to charge for ticket prices. Based on sampling they determine that if they charge $400 for a weekend pass, 40000 people will attend. However it has been pointed out to them that for each $10 reduction in price 4000 more people ...
Sunday, January 18, 2015 at 10:18pm
An explosion has occurred in Canada. Its blast radius was a regular circle that can be modelled by the equation x2 +y2=100, where x and y are measured in km. The blast destroyed everything within the circle. a) Canada has 4 fire stations located at the following locations (-8,...
Sunday, January 18, 2015 at 10:12pm
Ms. Sue, Here are my questions you told me to repost. Thank you! I appreciate your help. 14. Mark weighs 74 pounds. Together, he and his sister weigh six pounds more than three times the weight of his sister. What is the weight, w, of Marks sister? a. 74 + w = 3w; 37 lb ...
Sunday, January 18, 2015 at 8:57pm
Hi Ms. Sue can you let me know if my answers are right? Anyone who can help check my answers will be greatly appreciated! Thank you! My answers are the ones with the *** after them. 1. 9x 5 = 95 a. 17 b. 11 *** c. 10 d. 10 2. w over four 4 = 3 a...
Sunday, January 18, 2015 at 8:00pm
If f (x)=x+2 , g(x)=-4x+3, and h(x)=x^2-2x+1, find each value. 1. (f x g x h) (3) 2. (h divided by fg) (-6) 3. [ g o ( h o f)] (-4) If f(x)=5x , h(x)=x^2+6x+8 , solve f[h(a+4)]
Sunday, January 18, 2015 at 7:08pm
Math Homework Help
Hello! I'm having problems with these two math problems. I've tried to solve them but I got nowhere. If someone could please help me, that would great! Thanks again! :) Directions: Verify the identity for each problem. 1.) cot^2y(sec^2-y-1)=1 2.) cosx+sin xtan x=sec x
Sunday, January 18, 2015 at 2:55pm
8-i/2+3i write complex # in standard form. I know to FOIL, not sure if I did it right, I got -13/4-9i then I'm not sure what to do next or if I'm done...so lost can anyone help me?
Sunday, January 18, 2015 at 2:25pm
Q#1-josh just put new tires on his car. if the wheels have a diameter of 14 inches, determine how far will the wheels travel in 3 revolution, to the nearest hundredth? Q#2-Melanie wants to put ribbon around the circumference of a circular section of the park. Ribbon comes in ...
Sunday, January 18, 2015 at 1:47pm
A boat has a speed of 4 m s −1 (relative to the surrounding water) and a heading of 170◦ . There is a current flowing from a bearing of 105◦ at a speed of 2.5 m s −1 . Take i to point east and j to point north. (a) Express the velocity u of the boat ...
Sunday, January 18, 2015 at 12:23pm
In his first three years of coaching basketball at North High School, Coach Lucas' team won 8 games the first year, 17 games the second year, and 6 games the third year. How many games does the team need to win in the fourth year so the coach's average will be 10 wins ...
Sunday, January 18, 2015 at 10:59am
The hire purchase price for a T.V set is made up of $4,000 deposit and 18 equal monthly installments of $1,200 each. Amos was given a discount of 20% on the hire purchase price on paying the cash for the T.V set. How much did he pay?
Saturday, January 17, 2015 at 11:06pm
Sam and Rono bought similar radio cassettes from the same shop Sam bought her's for cash. Rono bought his on hire purchase terms by paying a deposit of $ 4,000 plus 6 equal monthly installments of $3,000 each. If Rono paid $ 5,000 more than Sam, how much did Sam pay for ...
Saturday, January 17, 2015 at 11:00pm
The marked price of a bicycle is $ 6245. Dan bought the bicycle on cash terms and was given a 10% discount. Dave bought the same type of bicycle on hire purchase terms whereby he paid a deposit of $ 3000 and 12 equal monthly installments of $ 500. How much more than Dan did ...
Saturday, January 17, 2015 at 10:57pm
Jones bought a radio on hire purchase terms. He paid a deposit of $ 500 and 22 equal monthly installments of $ 250. If the cash price of this radio was three quarters of the hire purchase price, what was the cash price?
Saturday, January 17, 2015 at 10:55pm
The marked price of a sewing machine is $ 15,000. A 5% discount is allowed of the machine bought for cash. On hire purchase, a deposit of $ 6,000 plus three equal monthly installments of $ 3,200 is required. Hali and John bought the sewing machines from a shop. Hali paid cash ...
Saturday, January 17, 2015 at 10:53pm
what is statistics Perspective statistics inferential statistics Data statistics Example of a Quantitative data Example of a Qualitative data What is population what are the different scale of measurement what are ...
Saturday, January 17, 2015 at 9:08pm
1. What is the range of the ages shown in the stem-and-leaf plot? 3|0,2 4|1,4,4,5 5|3,5,8,9 6|2,2,2,5,6,8 7|5,5,6 A. 4 B. 6--- My answer C. 34 D. 46 What is the median of the ages shown in the stem-and-leaf plot? 58 58.5 59---- my answer 59.5 What is the first quartile (Q1) of...
Saturday, January 17, 2015 at 5:40pm
7th grade math
Can you check these please? 4. A local bakery sold 60 loaves of bread in one day. If 65% of these were sold in the afternoon, how many loaves were sold in the afternoon? Ans: x = .65 * 60 x = 39 loaves 7. Ruben bought 6new books for his collection. This increased his ...
Saturday, January 17, 2015 at 5:03pm
A drawer contains 22 black socks, 22 white socks, and 22 blue socks. If the light is off and Matt reaches into the drawer to get his socks, what is the minimum number of socks he must pull out in order to be sure that he has a matching pair?
Saturday, January 17, 2015 at 1:40pm
the average annual rainfall for a town is 43.2 inches. I know the monthly rainfall has to be 3.6 inches. the difference of a given month's rainfall from the average monthly rainfall is called the deviation. what is the deviation for each month shown? may 2 3/5 inches, june...
Saturday, January 17, 2015 at 7:25am
7th grade math
Can you check the following? 10. A store pays $10 for a bracelet, and the markup is 115%. A customer will also pay 5 1/2% sales tax. What will be the total cost of the bracelet to nearest cent? t = 1.15 x 10 t = $11.5 (markup price) t = $10 + 11.5 t = $21.50 (cost of bracelet ...
Friday, January 16, 2015 at 11:10pm
A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 26 ft, express the area A of the window as a function of the width x of the window.
Friday, January 16, 2015 at 9:42pm
Math to Ms.Sue (urgent )
11. Lorenzo has a checkbook balance of $118.00. He writes two checks, one for $9.00 and one for $84.25. He then deposits $95.00. Finally, he uses his calculator to determine his new balance. Which one of the following series represents the correct order in which he...
Friday, January 16, 2015 at 9:19pm
Good evening. I do not know how to solve this kind of problem. Could someone help me. Find both x-intercept and the y-intercept of the line given by the equation for 2.4x+2.9y+6.4=0 Thank you for your kindness.
Friday, January 16, 2015 at 8:56pm
Kelly and Sally both set off at 8 :30 am for Town P, 180 km away. Sally arrived at 100:30 am, ahead of Kelly. If Kelly traveled at a speed which was 10 km/h slower than Sally, the Kelly would have arrived in Town P at ________ PM.
Friday, January 16, 2015 at 8:30pm
Peter and Paul are heading towards the same destination 25 km away. Peter walks at 5 km/h while paul cycles 4 times as faster. If both start off from the same place at the same time, Paul will arrive _______ hours earlier than Peter. Express your answer to the nearest hundredths.
Friday, January 16, 2015 at 8:28pm
The speed of sound in air at sea level at 32 degrees Fahrenheit is 1088 ft/s. If that represents only 22.04% of the speed of sound in ice-cold water, what is the speed of sound in ice-cold water, to the nearest whole number? what i did: 22.04/100 = 32/x i set up this ...
Friday, January 16, 2015 at 7:12pm