Sunday
February 7, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

math
Solve the equation for n n!/(n-2)! = 90 I get n= 10 but when i plug 10 back into the equation i dont get 90 to check... My work: n!/(n-2)! =90 n(n-1)(n-2)/(n-2)! =90 i cancelled the n-2 and expanded the n(n-1) n^2 -1n -90 =0 (n-10)(n+9) = 0
Sunday, February 7, 2016 by Rose

math
The perimeter of a rectangle is given by P = 2W + 2L where W is the width and L is the length. The length of a rectangle is 3 more than twice its width. The perimeter of the rectangle is 66 meters. What is the length and width of the rectangle?
Sunday, February 7, 2016 by britt

math
A sum of ₹400 amounts to ₹480 in 4 years.What will it amount to, if the rate of interest is increased by 2%p.a.?
Sunday, February 7, 2016 by Karan

Math
For these problems the instructions say to tell whether each scale reduces, enlarges, or preserves the size of the actual object. Here are my problems and answers: 1. 10 cm: 1 dm Ans: reduces 2. 3 ft:3 yd enlarges 3. 5 km: 5 m enlarges 4. 1760 yd: 5280 ft reduces
Sunday, February 7, 2016 by Alex

Math
If Susie walks 2 mph and Bobby walks 3 mph and the walk from their house is 4 miles, how long does it take for each of them to get there?
Sunday, February 7, 2016 by Cole

Math
A number exceeds another by 4 and their sum is 32.Find the two numbers .
Sunday, February 7, 2016 by Warda

Math
the question is "Joe rode his bike over a piece of gum. Joe continued riding his bike at a constant rate. At time t=1.25 seconds the gum was at a maximum height above the ground and 1 second later the gum was at a minimum. If the wheel diameter is 68cm find a ...
Sunday, February 7, 2016 by Mark

Math
1. 1. A police cruiser approaching a right-angled intersection from the north, is chasing a speeding car that has turned the corner and is now moving due east. When the cruiser is 0:6 miles north of the intersection and the car is 0:8 miles to the east, the police determine ...
Sunday, February 7, 2016 by Betty

Math
Two base angles of a cyclic quadrilateral are 90 and 60 find other remaining two angles.
Sunday, February 7, 2016 by Astha

math
If $60 is put in an account that gets 7% per year, and I add $15 at the end of each year, how much will I have at the end of 8 years?
Sunday, February 7, 2016 by jason

Math
For each of the functions below, state the domain and range, the restrictions, the intervals of increasing and decreasing, the roots, y-intercepts, and vertices. b) f(x)=+squareroot x−2
Saturday, February 6, 2016 by Carter

math
the distance between spice island and Kay island is 3.4 inches on a map if the scale on a map is 1inch=25 miles what is the actual distance between the 2 islands? A. 28.4 miles B. 75 miles C. 85 miles D. 850 miles
Saturday, February 6, 2016 by shynice

Math
Ingrid walked her dog and washed her car . She spent 3 times as much time washing her car as she did walking her dog. it took Ingrid 1 1/2 hours to wash her car .How long did it take Ingrid to walk her dog ? Equation: Variable represents:
Saturday, February 6, 2016 by Anonymous

math
If 14 out of 20 people like chocolate milk, what percent of the people do not like chocolate milk? a.5% b.30% c. 40% d.70%
Saturday, February 6, 2016 by shynice

math
Order from greatest to least 1/8,36%,0.85,0.078
Saturday, February 6, 2016 by shynice

math
Order from greatest to least 1/8,36%,0.05,0.078
Saturday, February 6, 2016 by shynice

math
which pair of ratios can form a true proportion 9/12,5/8 25/20,16/21 6/27,2/9 7/12,10/15
Saturday, February 6, 2016 by shynice

math
if the unit price for a cantaloupe cost 0.65 per pound and sally pays 1.95 for a cantaloupe how many pounds does her cantaloupe weigh? A. 2 pounds B. 3 pounds C. 4 pounds D. 5 pounds
Saturday, February 6, 2016 by shynice

math
31 gallons of gas cost $82.15. what is the unit rate for 1 gallon of gas
Saturday, February 6, 2016 by shynice

Math
9/2 written as an integer or simplified fraction
Saturday, February 6, 2016 by Skylar

Math
Please help. Julio uses a scale of 1/ 8 inch  1 foot when he paints landscapes. In one painting, a giant sequoia tree is 34.375 inches tall. How tall is the real tree?
Saturday, February 6, 2016 by Sal

math
Two trains started at the same time from the same station and traveled in opposite directions.One traveled at a rate of 50mph and other at a rate of 60mph.In how many hours were they 660 miles apart?I want to know if my answer is correct. 50t+60t=660 110t=660 110 t=6
Saturday, February 6, 2016 by Kiki

Math
Fehima has 4 times as many dimes as quarters.If her dimes and quarters have a value of $3.90, how many of each coin does she have?I want to know if my answer is correct. D=4(q) 0.10d+0.25q=3.90 0.10(4q)+0.25=3.90 0.40q+0.25q=3.90 65q=3.90 65 q=0.06 65q
Saturday, February 6, 2016 by Kiki

Math
Can you show or explain how to do this? Julio uses a scale of 1/8 inch= 1 foot when he paints landscapes. In one painting, a giant sequoia tree is 34.375 inches tall. How tall is the real tree?
Saturday, February 6, 2016 by Lenny

Math
Can you show me how to do this problem: Find the missing dimensions of triangle XYZ. The info it gives me is side X has the number 2, Side Y has the letter m , and Z has the letter n. What do I do for this?
Saturday, February 6, 2016 by Mary

physics & math
If you jump off a 10 meter cliff on the Moon, and the acceleration of gravity is 1.6 m/s^2. How fast are you going when your feet hit the bottom of the cliff?
Saturday, February 6, 2016 by Jules

math
The master bedroom of Julie's new apartment measures 10.5 feet by 16 feet. What is the area of the room?
Saturday, February 6, 2016 by Jessica

Math
If a valid time on a 12 hour time period has the hour hand and minute hand switched, how many times will that result in another valid time? I have found 11, which is when the hour hand points at the same place as the minute hand. I know there is much more, but I can't ...
Saturday, February 6, 2016 by Andre

Math
On an airplane there are two seats on the left side in each row and three seats on the right side. There are 150 seats altogether. Can someone help me?!
Saturday, February 6, 2016 by Anna

Math
Given the equations y=16 and y=3. Determine the slope and y-intercept if any exist. I have determined that the slope is 0 for both equations because it is a horizontal line, but I don't know what the y-intercepts are?
Saturday, February 6, 2016 by David

math
What is -(-(-8)) I believe it's -8 because of the double negative if you work inside the parentheses first?
Saturday, February 6, 2016 by John

Math
Can someone help or show me how to do this problem? On a scale drawing of a house plan the master bathroom is 1 1/2 inches wide and 2 5/8 inches long. If the scale of the drawing is 3/16 inches=1 foot, what are the actual dimensions of the bathroom?
Saturday, February 6, 2016 by Max

math
Juan's father is 4 times as old as Juan.Twenty-two years from now he will be twice as old as Juan.What are their ages now? My work- 4(F)=J 22(2)=J
Saturday, February 6, 2016 by Gigi

Math
The perimeter of an isosceles triangle is 36 meters.Five times the length of the base is 2 meters less than three times the length of each of the congruent sides.How long is each side of the triangle? Work- a+b+c=36. 5(b)=3(c)-2
Saturday, February 6, 2016 by Genell

math
Which of the following is an example of a variable expense? A rent B groceries C wages D car insurance cant figure this out! help?
Saturday, February 6, 2016 by Anonymous

math
4 Luke can purchase a 12-pound item from several different retailers. Which of the following is the best buy? A Buy online for $15 plus pay shipping and handling costs of $0.79 per pound. B Buy online for $17 plus pay shipping and handling costs of $0.69 per pound. C Buy at a ...
Saturday, February 6, 2016 by Anonymous

math
at a local sports event students paid $3.00 each and non students paid $5.00. There were 120 more students at the event than non students. if the total receipts were 2960 how many tickets of each were sold?
Saturday, February 6, 2016 by angel

Math Radicals
(2√5+3)(2√5+3)= a + b√c+d Figure out the binomial to find a,b,c,d
Saturday, February 6, 2016 by Chad

Math
What is the formula The value of Dave's Camaro decreased by 30%. The car is worth $14,000. What was the purchase price?
Saturday, February 6, 2016 by Michael

math
An aeroplane taking off from a field has a run of 500 meters. What is the acceleration and take off velocity if it leaves the ground 10 seconds after the start ?
Saturday, February 6, 2016 by younis

math
two boats p and q are at points whose position vector are 4i+8j and 4i+3j respectively. both of the boats are moving at a constant velocity of p is 4i+j and q is 2i+5j. find the position vectors of p&q and pq after t hours, and hence express the distance between p and q ...
Saturday, February 6, 2016 by Joshua

Math
Poor Delbert has been asked to do some tiling at home. He doesn't really understand the pattern. Can you help? How many black tiles to white? (1to every 2) There are 12 tiles in the pattern. Suppose there ere 60. How many black tiles will Delbert need then?
Saturday, February 6, 2016 by Sameeha

Math
Poor Delbert has been asked to do some tiling at home. He doesn't really understand the pattern. Can you help? How many black tiles to white?(1 to every 2) What is the proportion of black tiles to the whole pattern(1/3) What is the proportion of white tiles to the whole ...
Saturday, February 6, 2016 by Sameeha

Math and Physic
an egg parachute was drop at a building with a time of 7.57 sec. what is the height of the building and velocity.
Saturday, February 6, 2016 by Evangeline

math
A man seated on a chair has a mass of 85 kg. Known that the mans weight is distributed so the chairs back legs support twice as much as the front legs. What is the mass taken by each leg?
Saturday, February 6, 2016 by Daniel

math
A parking garage charges $K for the first hour or fraction of an hour and $2/3K for each hour thereafter. Bill parked 7 times as long as Ray. If Ray parked for 1/2 hour, Bill paid _____ times as much as Ray.
Saturday, February 6, 2016 by Jessey

math
Tom and Burt are to take turns removing either 1 or 2 marbles from a circle. There are 7 marbles. The person selecting the last marble is the loser. If Tom goes first and each of them makes the best possible removals, then who will lose the game?
Saturday, February 6, 2016 by dero

math
Rochelle deposits $350 in an account that earns 6% annual interest, compounded quarterly. How much money will be in the account in 8 years? 350(1.06)^32 =2258.685339 Can anyone check what I'm doing is correct or not? Janet deposits %150 every month in an account that earns...
Friday, February 5, 2016 by Y

Math, Help me check my answers
I took a screen shot of my answers can u tell me if i am right ht tp:/ /prntscr.c om/9zmlo2
Friday, February 5, 2016 by ..........

math reasoning
the library charges 5 cents for the first day and 2 cents for each additional day that the book is over due if the borrower paid 65 cents in late charges for how many days was the book overdue
Friday, February 5, 2016 by Anonymous

Math
What is the final price of a $24 sweatshirt if there is a 20% discount applied and then a 7% sales tax added?
Friday, February 5, 2016 by Julie

Math.
George has 2 quarters, 2 dimes and 2 nickels. Using at least one of the 6 coins, how many different amounts of money can he make?
Friday, February 5, 2016 by Anonymous

word problem math
Hank has more money than Joe and Al combined. Joe has exactly twice as much money as Al. Al has more money than Steve. Hank has exactly four times as much money as Steve. None of the boys have more than 18tf. The total amount of money the fours boys have is ____ cents.
Friday, February 5, 2016 by dero

Math
How do you DO THIS? 4+8+12+16+20... +392+ 396+ 400?
Friday, February 5, 2016 by lucas

Math
A camera costs $175. Tia and his brother share the cost in the ratio 2:3. What is Tia's share?
Friday, February 5, 2016 by Mar˙sha

math
One cell phone plan costs $29.94 per month plus $.10 for MB of data. Another plan costs $32.99 per month plus $.05 for each MB of data. For how many MBs of data will the monthly bill for be the same for both plans?
Friday, February 5, 2016 by C3P0

Solving Two-Step Inequalies (Math)
solve -x + 6 > - (2x + 4).
Friday, February 5, 2016 by Roxy

Math
1. Write the following reversible as a biconditional: If two perpendicular lines intersect, they form four 90* angles. A) Two intersecting lines are perpendicular if and only if they form four 90* angles. B) Two intersecting, perpendicular lines do not form four angles. C) ...
Friday, February 5, 2016 by Tim

Help please? Math 141 (Pre-Cal) (Shapes)
Hi everyone I am lost on how to do this math problem: A. You have 180 feet of fencing with which to construct a rectangular pen. What is the maximum area you can enclose? B. Going back to part A, you decide to build your rectangular pen next to a large barn. (Assume the barn ...
Friday, February 5, 2016 by Gio

Math
A train leaves New York at 4:00 PM a second train leaves the same city in the same direction at 6:00 PM the second train travels 24 mph faster than the first if the second tray overtakes the first at 10:00 PM what is the speed of each of the two trains
Friday, February 5, 2016 by Sabri

math
Sam buys 2 adult tickets and 3 child tickets for $44.40.John buys 3 adult tickets and 6 child tickets for $78.How much does a child ticket and adult ticket cost?
Friday, February 5, 2016 by Julian

math college readiness
A ball is thrown from a height of 105 feet with an initial downward velocity of 9/fts . The ball's height h (in feet) after t seconds is given by the following. =h−105−9t16t2 How long after the ball is thrown does it hit the ground? Round your answer(s) to the...
Friday, February 5, 2016 by 902

Math
Systems of equations with different slopes and different y-intercepts have more than one solution. A. Always B. Sometimes C. Never I think it's B.
Friday, February 5, 2016 by Kinu

Math
Which congruence statement says the same thing as triangle ABC is congruent to triangle DEF? (1 point) triangle ABC is congruent to triangle EFD triangle ACB is congruent to triangle DEF triangle ACB is congruent to triangle DFE•• triangle BCA is congruent to ...
Friday, February 5, 2016 by Tala

math
Two horizontal forces act on a wagon, 550N forward and 300N backwards. What force is need to produce a net force of zero? 500 N 300N -----> Object <-------- -----> <-------- Fnet=F1+F2+F3 0=500N-300N im so totally lost
Friday, February 5, 2016 by johanna

math (sequence and series )
Mr. Mensah starts a job with an annual salary of $240,every year. After working for eight years, Mr Mensah is promoted to a new post with an annual salary of $9500 which increases by $360 every year,calculate (a) Mr Mensah's salary in the fifteenth year of service. (B) Mr ...
Friday, February 5, 2016 by Majors

Math
Candy purchased the following items. •2 shirts that cost $15.00 each •1jacket that cost $28.00 she paid 4.5% sales tax on her purchase what was the total amount spent on this purchase including sales tax $55.39 $58.00 $60.61•• $44.94 Correct me
Friday, February 5, 2016 by Tala

Math
The graph below shows the sales of a popular song each week it was in a Top 40 song chart. which statement most accurately describes the slope of the graph A. The sales increased by 1 hundred thousand every 2 weeks. B. The sales decreased by 1 hundred thousand every 2 weeks...
Friday, February 5, 2016 by Tala

Math
Use Newtons Method to find 13^(1/4) correct to four decimal places. I know the formula X_(n+1)= X_n - [f(X_n)]/[f'(X_n)]. I am not sure how to go on from there. I made the equation into y=X^(1/4), but I can't seem to figure out how to go on. Please help? Thanks in ...
Friday, February 5, 2016 by Betty

math (sequence and series )
Mr. Mensah starts a job with an annual salary of $240,every year. After working for eight years, Mr Mensah is promoted to a new post with an annual salary of $9500 which increases by $360 every year,calculate (a) Mr Mensah's salary in the fifteenth year of service. (B) Mr ...
Friday, February 5, 2016 by Majors

Math
Which unit would you use to measure the amount of juice in a glass? Gallons. Quarts. Pints. (MY ANSWER) Ounces.
Friday, February 5, 2016 by LOVE

MATH
How do you construct a perpendicular bisector
Friday, February 5, 2016 by Charlie Shuler

MATH
Tasha earns $400 per week plus a commission of 10% on her weekly sales. Each week she saves of her earnings. In the expression , what does the expression 400 + 0.1s represent in this situation?
Friday, February 5, 2016 by TEMNISTOKES

Math
which statement is a true statement? All rectangles are squares All squares are rectangular •• Every rhombus is a rectangle Every rectangle is a rhombus Correct me if I'm wrong!!
Friday, February 5, 2016 by Vanessa

Math
I'm having some difficulty understanding finding patterns to the nth degree. Here is my problem: -1, 1/3, 7/9, 25/27, 79/81, 241/243 I recognize the pattern in the denominators is multiplying by 3 and the pattern in the numerators is that they are two less than the ...
Friday, February 5, 2016 by Anonymous

Math
Which statements are always true about regular polygons? Select all that apply. All sides are congruent •• Pairs of sides are parallel All angles are congruent •• All angles measure 90 degree Correct me if I'm wrong!!
Friday, February 5, 2016 by Vanessa

Math
a rug in the shape of a regular quadrilateral has a side length of 20ft what is the perimeter of the rug? 4ft 5ft•• 40ft 80ft Correct me if I'm wrong!!
Friday, February 5, 2016 by Vanessa

Math
which polygons will always be irregular? Triangle Trapezoid•• Square Hexagon Correct me if I'm wrong!!
Friday, February 5, 2016 by Vanessa

math
a recipe calls for 5/7 cup of granola. how much is needed to make half the recipe.(1/2)(5/7)= 5/14 Is this correct?
Friday, February 5, 2016 by andy

math
The Sugar Sweet Company needs to transport sugar to market. The graph below shows the transporting cost (in dollars) versus the weight of the sugar being transported (in tons). there is a graph. 1. How much does the cost increase for each ton of sugar being transported? 2. ...
Friday, February 5, 2016 by shuluka

math
The length of a rectangular garden exceeds the width by 8 feet. If the perimeter of the rectangle is 28 feet, what are its dimensions?
Friday, February 5, 2016 by tonya

math/algebra
Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) shannon
Friday, February 5, 2016 by shannon

math
Find the equation of a line that is perpendicular to the line y = 1/4x + 5 and contains the point (-6, 0) Susan
Friday, February 5, 2016 by Sue

Math
What is the final price of a textbook that costs $107.20 with an added tax rate of 6%?
Friday, February 5, 2016 by Leah

Math
What's eighteen and fourteen thousands in standard form?
Friday, February 5, 2016 by Amy

MATH
Mr. Smith used 17 lengths of fence to enclose his gardens. He now needs 6 lengths of fence for a dog kennel. Show how he can remove 6 lengths of fence and still have 2 squares. Please help!Thanks!
Friday, February 5, 2016 by VER G.

math
jane gets 1/2 of a gold star each time she helps her teacher clean up the classroom after class. How many times would Jane need to help her teacher to earn 3 whole gold stars? Draw fraction. Strips to help.
Friday, February 5, 2016 by Charles

Math
Solve the following linear programming problems by the graphical method Dr. Lum teaches part-time at two different community colleges, Hilltop College and Serra College. Dr. Lum can teach up to 5 classes per semester. For every class taught by him at Hilltop College, he needs ...
Thursday, February 4, 2016 by Travis

math
whats the pound for 1/4
Thursday, February 4, 2016 by briannah

Math
Paul's electric bill was three dollars more than one-half his gas bill. If electric bill was ninety-two dollars, what was gas bill
Thursday, February 4, 2016 by Diane

math
nathan is shipping vases for his pottery studio. Each vase weighs p pounds. Each crate weighs 5 pounds and holds 10 vases .a shipment consists of 15 crates. write an expression for the weight of a crate holding 40 vases
Thursday, February 4, 2016 by jamari

math
A pair of dice is rolled.What is the probability that the sum of the pips is either an even number on a multiple of 3? total number of space is 36.
Thursday, February 4, 2016 by Eric

math
three taps fills water in a tank.one fills it in 3hrs another in 4hrs and the third in 6hrs.if all run together how soon will they fill the tank?
Thursday, February 4, 2016 by Mary

Math
What is 4 1/3 as a inproper fraction
Thursday, February 4, 2016 by Keanna

Math
find the limit as x->3 of (1-sqrt(x-2))/(x-3) I'm not sure how to get the answer, I know it's -1/2, but I don'y know how to get that.
Thursday, February 4, 2016 by Dan

Math
How do you find the slope of -5x+3y-8=0
Thursday, February 4, 2016 by Blake

Math
I have the following chart that I am supposed to find the percent increase in one step. The directions specifically say not to use a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 So I divide 12.5 by 10.5, 14.9 by 12.5, etc. When I do this (and round) I get about 19% increase ...
Thursday, February 4, 2016 by Sami

math
Braden has 10 red model cars, Which are 2/5 of the total number of cars in his collection. How many cars does Braden have in his collection? 4. (MY ANSWER) 10. 25. 50.
Thursday, February 4, 2016 by LOVE

math
Perimeter of 26.length is 6 feet. What is the width
Thursday, February 4, 2016 by Linda

Math
Find the number that completes the equation. blank = 2 ----- --- 4 20 1/10. 2/5. 2. 4. Please explain how I could solve this. :)
Thursday, February 4, 2016 by LOVE

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