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February 1, 2015

Homework Help: Math

Branches of Math

Recent Math Questions

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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

Math
-2(k+1)>-16+5k My answer K <-2
Monday, January 19, 2015 at 11:09am

Physics/Math
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

math
A piece of cartolina is 60 cm by 48 cm.What is the least number of squares that can be cut from it with no material wasted?
Monday, January 19, 2015 at 10:34am

7th grade math
-2(3r+4)= -5r-8-r Answer I got r=r Question 2 14+8w=4(8+2w) I have 14=48. No solution
Monday, January 19, 2015 at 10:30am

Math
12m+12=6(3m+3) My answer is -6= -6 which is identity ??? Or is it null or empty??
Monday, January 19, 2015 at 10:21am

math
80 boys used 60 loaves in 12 days. 120 boys needs loaves for 18 days. How many loaves will be needed?
Monday, January 19, 2015 at 9:58am

math
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

math
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

math
When looking at a quilt pattern, how do you describe the minimum number of translation of a square A. There is 16 total squares.
Monday, January 19, 2015 at 12:24am

Math
Does (2+5i)+(-2-4i) equal to 0+1i, or i?
Sunday, January 18, 2015 at 11:31pm

math
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

Math
A students tuition was 2800. A loan was obtained for 5/7 of the tuition. How much was the loan
Sunday, January 18, 2015 at 10:46pm

math
The sum of first 12 terms of an arithmetic series is 186, and the 20th term is 83. What is the sum of first 40 terms?
Sunday, January 18, 2015 at 10:33pm

Math
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

Math
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

Math
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 Mark’s sister? a. 74 + w = 3w; 37 lb ...
Sunday, January 18, 2015 at 8:57pm

Math
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

Math
Concert took in $162000. Tickets were $8.50 per student and $12.50 per adult. Total if 15000 people attended. How many adults came to the concert?
Sunday, January 18, 2015 at 7:40pm

Math
How do you write a quadratic equation with information saying that it opens upward, has a pattern of 1, 3, 5, and a vertex of (-4,5)?
Sunday, January 18, 2015 at 7:17pm

Math
If w is some number between 3 and 10, which of the following could be the average of the numbers 4,5,6,7,9 and w? (A)4.6 (B)5.1 (C)6.3 (D)7.9 (E)8.2
Sunday, January 18, 2015 at 7:14pm

Math
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

Math
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

Math
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

Math
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

math
A car traveled at 50km/h for 4 hours and at 60km/h for 3 1/2 hours. What was the average speed for the whole journey?
Sunday, January 18, 2015 at 11:13am

math
the population of a town is modelled by the functions p(t)=6t2+110t+3000. when will the population reach 6000? thanks
Sunday, January 18, 2015 at 11:00am

Math
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

math
Kate has 78 foreign stamps; she has 15 less than twice as many Philippine stamps. How many stamps has she?
Sunday, January 18, 2015 at 10:43am

math
I used 2/5 of my money in one store and 1/3 of what remained in a second store. If I had exactly 56 pesos left how much money did I have at first?
Sunday, January 18, 2015 at 10:41am

Life science,history,geography,math literacy
Is it possible to become a law while you are doing those subject
Sunday, January 18, 2015 at 10:31am

math
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

Math
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

Math
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

Math
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

Math
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

math
• 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

Math
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

Math
Multiplication is defined as repeated addition. Use the word repeated to define exponential form. Justify your reasoning.
Saturday, January 17, 2015 at 3:56pm

Math
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

math
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

Math literacy,physical science,CAT,life science
Can I still be a doctor without pure Maths?
Saturday, January 17, 2015 at 4:34am

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

Math
Evaluate the difference quotient for the given function. Simplify your answer. f(x)=1/x, (f(x)-f(a))/(x-a)
Friday, January 16, 2015 at 9:49pm

Math
Find an expression for the function whose graph is the given curve. The top half of the circle x^2+(y-4)^2=4
Friday, January 16, 2015 at 9:47pm

Math
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

math
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

Math to Ms.Sue
Ms.Sue may you please check my answers down below?
Friday, January 16, 2015 at 8:41pm

Math
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

Math
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

Math
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

Math
Estimate 12 1/2% of 57
Friday, January 16, 2015 at 7:09pm

math
how many positive whole numbers smaller than 2003 have 2 as their first digit and 1 as their last digit
Friday, January 16, 2015 at 7:07pm

Math to Ms.Sue
1.   The Hamilton Brush Company issued 2,500 shares of common stock worth $100,000.00 total. What is the par value of each share?      A. $25.00 B. $400.00 C. $250.00 D. $40.00 My choice is either A C or D? I divided 100,...
Friday, January 16, 2015 at 6:50pm

Math
you must cover the entire bathroom floor with tiles. each tile measures 1 ft. x 1 ft. You will need an extra 5% of tiles to account for waste. How many tiles will you need to purchase for the project? The floor measures 5ft. x 7ft.
Friday, January 16, 2015 at 6:32pm

math proportional relationships
Help me please I am stuck on these proportional relationships. I have 10 of them I can not figure out. I have tried over and over again and can not seem to understand them is there a way I can upload them here for help.
Friday, January 16, 2015 at 6:17pm

Math
Given that a cylinder has a volume of 1200cm^3, what is the volume of a cone that has the same height and same radius as the cylinder? explain your reasoning
Friday, January 16, 2015 at 6:09pm

math
you must apply two coats of paint to the walls of the bathroom. the door and the window will not be painted. determine the total area to be painted (accurate to 5 decimals) and how many cans of paint will you need to purchase if one can covers 100 ft^2? you cannot purchase ...
Friday, January 16, 2015 at 6:03pm

Math
a bathroom floor is covered by 15 tiles. each tile measures 18 in. by 18 in. how many floor tiles measuring 6 in. by 6 in. would be needed to cover the same area?
Friday, January 16, 2015 at 5:54pm

math
A square + b square
Friday, January 16, 2015 at 5:30pm

math
Michaela makes original stationary to give away as gifts. She likes to put a small bow in the corner of each card. She purchased a piece of ribbon that was 3 1/4 ft long. She can make each bow out of 1/3 ft of ribbon. Which equation would be used to show how many bows she can ...
Friday, January 16, 2015 at 3:58pm

math
What is 10/21x 12/1y + -3
Friday, January 16, 2015 at 3:01pm

math
Sin theta equals 5/12 in quadrant, find the exact value of cos 2theta. I'm not sure how to solve this question, I need some help.
Friday, January 16, 2015 at 1:47pm

math
john calls his dad every 3 days. Katie calls every 4 days. Jamie calls every 6 days. once in every ________ days, all three will call on the same day.
Friday, January 16, 2015 at 1:45pm

math help
1. 5/3+(-1/5) a. -22/5 b. -22/15 c. 22/15** d. 28/15 2. Which property is illustrated by the statement? (3+2.8)+5=3+(2.8+5) a. Commutative Property of Addition b. Commutative Property of Multiplication c. Inverse Property of Multiplication d. Associative Property of Addition **
Friday, January 16, 2015 at 1:23pm

Math
Miguel is 5 feet 10 inches tall. On a sunny day he casts a shadow 4 feet 2 inches long. At the same time, a nearby electric tower casts a shadow 8 feet 9 inches long. How tall is the tower? How do I set this up into ratios to figure out the tower height?
Friday, January 16, 2015 at 11:39am

math
rodeo performer spins a lasso in a circle perpendicular to the ground. the circle has a diameter of 118cm. she starts with the knot at the lowest point which is at 90 cm above the ground, she spins the lasso and .5 seconds later the knot is at the highest point. 1.what is the ...
Friday, January 16, 2015 at 10:11am

Math/physics
This is my last problem. Please help! A motorcycle rider starts out on top of a ramp 10 m high and then rides down and jumps the motorcycle when he comes to the end of the ramp (like evil knivel). The rider is at the peak of his jump at 5 m. How fast is the motorcycle going ...
Friday, January 16, 2015 at 9:16am

MATH
The length of a rectangle is 13 inches greater than its width,its perimeter is 8 feet.Find its dimension
Friday, January 16, 2015 at 7:25am

Math, Quadratic Functions, Max/Min Word Problems
Two numbers have a sum of 72. What is their product if it is a maximum?
Friday, January 16, 2015 at 3:29am

Math, Quadratic Functions
Eighty metres of fencing are available to enclose a rectangular play area. Determine the dimensions that will enclosed the maximum area. What is the maximum area?
Friday, January 16, 2015 at 3:06am

Math
Suraya has x apples and 8 oranges.How many apples and oranges does Suraya have altogether?Give your answer in terms of x.
Friday, January 16, 2015 at 1:21am

MATH
a rodeo performer spins a lasso in a circle perpendicular to the ground. the circle has a diameter of 118cm. she starts with the knot at the lowest point which is at 90 cm above the ground, she spins the lasso and .5 seconds later the knot is at the highest point. 1.what is ...
Friday, January 16, 2015 at 1:03am

Math
A blue rope is three times as long as a red rope. A green rope is 5 times as long as the blue rope. If the total length lf the three ropes is 508.26 meters, what is the length of the blue rope?
Friday, January 16, 2015 at 1:02am

math(5th grade)
sixteen teams compete in a single elimination basketball tournament (one loss and you're out). How many games must be played to determine a champion?
Friday, January 16, 2015 at 12:56am

Math
Matthew used 1/5 of a box of flour for cooking and ¾ of the remainder to make bread. The rest of the flour was packed equally into 5 containers. What fraction of the total amount of flour was in each container?
Thursday, January 15, 2015 at 9:47pm

Math
Can someone please help me set this up. I didn't quite understand how to do this today. Before leaving Earth, the mass of an astronaut is measured to be 60kg. The astronaut lands on the Moon and measures the acceleration of gravity to be 1.6 m/s2(squared). What would the ...
Thursday, January 15, 2015 at 9:46pm

Math
The length of the side QR of a triangle PQR is 14.5cm <PQR=71 <QRP=57,find the length of the side s PR and PQ
Thursday, January 15, 2015 at 9:32pm

MATH
Alexis separated her pictures into 3 piles. Each pile contained 9 pictures. How many pictures did she have in all? Write and solve equation. Answer to my problem: 27=9p p=3
Thursday, January 15, 2015 at 9:28pm

Math
I'm less than a hundred, the sum of my digits 17, I am a even number
Thursday, January 15, 2015 at 9:20pm

6TH GRADE MATH
Write an equation you can use to find the length of the rectangle. area=72 m^2. 8m=length xm=width My equation is 8x=72 Am I correct?
Thursday, January 15, 2015 at 9:10pm

math
just a question i have about solving indirect measurements. when you set up your ratios do you cross multiply and then solve for x by dividing?
Thursday, January 15, 2015 at 8:55pm

Algebra Help
You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
Thursday, January 15, 2015 at 8:42pm

Math
1. A bag contains red, blue, green, and yellow marbles. Seth takes a marble from the bag without looking, records the color of the marble, and then puts the marble back in the bag. He repeats the process until he has recorded the colors of 35 marbles. The chart below shows the...
Thursday, January 15, 2015 at 8:42pm

math
a rectangular room is 42ft wide by 69 feet long. On a blueprint, the room is 14" wide. How long os the room on the blueprint. I am totally lost. How do i even set this up to solve.
Thursday, January 15, 2015 at 8:41pm

Math
Diagram of a triangle PQR when QR is 14.5 <PQR=71 <QPR=57,find the lengthr of PR and PQ
Thursday, January 15, 2015 at 8:33pm

Math
In Mrs. Smith's Kindergarten there are 20 students. The number of girls is 4 less than the number of boys. How many girls and how many boys are there
Thursday, January 15, 2015 at 8:07pm

Algebra
You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
Thursday, January 15, 2015 at 7:57pm

Math
On a map 3/6 inch represents 60 kilometers. Distance A to B is 4 5/8 inches. Distance C to D is 5 3/5 inches. Distance E to F is 9 5/6 inches. What is the number of kilometers between A and B? What is the number of kilometers between C and D? What is the distance between E and...
Thursday, January 15, 2015 at 7:55pm

Math
A music store sells tapes for $10 and XDS for $15. Someone buys 5 items in this store and pays $60 How many of these items were tapes and how many were CDS? x=tapes and Y=CDS Are the two equations x+y=60 and 10x+15y=60?
Thursday, January 15, 2015 at 7:49pm

math
What do the lines making a circle around the low-pressure area indicate? 1.The values cannot be added because one is measuring area and the other is measuring volume. 2.The values can be added without making a conversion of units because they both measure area. * 3.The values ...
Thursday, January 15, 2015 at 7:35pm

math
Bella spent 4/7 of her money on a dictionary and 3 identical books. She spent 1/6 of the remainder on a journal that cost $7. How much did she spend on the dictionary and 3 books? If 3/8 of the cost of the dictionary was the same as 1/2 of the total cost of 3 books, how much ...
Thursday, January 15, 2015 at 7:20pm

Math
I need the Awnser for 1,221 divided by 3 can any one help?😕 my child is having truoble
Thursday, January 15, 2015 at 7:12pm

math
a recent survey was conducted on 6 grade students. Of those surveyed, 180 of the students prefered basketball over football. if the 180 students was 5/8 of the total students surveyed, how many total students were surveyed? write an equation to model this situation and then solve
Thursday, January 15, 2015 at 7:01pm

math
The graph of a reciprocal function of the form f(x)=1/ax+b where a is not equal to 0 and b is not equal to 0. Which is the equation of the original function f (x)? a)y=5.25x-2 b)y=-5.25x+2 c)y=-5.25x-2 d)y=5.25x+2
Thursday, January 15, 2015 at 6:32pm

Math
When a tire is labeled "185/70/14" that means it is 185 mm wide, the sidewall height (from the rim to the road) is 70% of its width, and the wheel has a diameter of 14 in. What is the tire's sidewall height?
Thursday, January 15, 2015 at 6:30pm

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