Tuesday
July 26, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

Math
5+x=59 What is x
Wednesday, May 25, 2016 by Anonymous

math
1. Original price: $92 Discount: 15% What is the sale price? 2. Original price: $110 Sale price: $91.30 What is the discount? 3. Discount: 33% Sale price: $134.00 What is the original price? 4. Cost to store: $32 Markup: 16% What is the selling price?
Wednesday, May 25, 2016 by jamie

math
Use the percent of change to find the new amount. $104 increased by 22% 120 brushes decreased by 25%
Wednesday, May 25, 2016 by Darcy

Please help me with this math
Solve for x. and show your work. -3x+5 less than or equal to -22 Note:where it says "less than or equal to" its the less than or equal to sign. Please help me!
Wednesday, May 25, 2016 by Miracle

Math- Prob Stat
In a Gallop Poll, 35% 18-23 year old's stated that they believe in ghosts. Find the probability that out of 16 students aged 18-23: A. Exactly 5 said they believed in ghosts. B. Exactly 5 said they do not believe in ghosts. C.Less than 11 said they do not believe in ghosts...
Wednesday, May 25, 2016 by Kate

Math(PleaseHelp!)
Consider the following conjecture: the sum of two even numbers will be even. A.) give three examples supporting the conjecture. (I gave 2+2=4 4+4=8 10+10=20) B.) Prove the conjecture( this is the part I need help with)
Wednesday, May 25, 2016 by Heaven

math
20% of 200 is what number? 5% of what number is 8.5? What percent of 400 is 60?
Wednesday, May 25, 2016 by ana

Math
Which is equivalent to this expression -4(-3x)+5(-7) A. -12x + 35 B. 12x - 35 C. -7x + 12 D. 7x - 12 Which is equivalent to the inequality shown below? X/2 </= -15 A. X >/= 7.5 B X </= 7.5 C X >/= -30 D X </= -30
Wednesday, May 25, 2016 by Anon

Math
P is a point 2m above the ground and 15m away from a tower. The angle of elevation of the tower from P is 65 degrees. Calculate the height of the tower.
Wednesday, May 25, 2016 by Angles of elevation

Math
Consider the following conjecture: the sum of two even numbers will be even. A.) Prove the conjecture
Wednesday, May 25, 2016 by Heaven

Math
It was observed that the shadow of a vertical pole of 6 meters longer when the angle of elevation of the sun was 30° than when it was 60°.By means of a sketched diagram,calculate,correct to two decimal places,the height of the pole.
Wednesday, May 25, 2016 by Evans

math plz help my last chance to do this homework
a) write an expression in simplest form for the perimeter of each triangle. b)write another expression in simplest form that shows the difference between the perimeter of the larger triangle and the perimeter of the smaller triangle.
Wednesday, May 25, 2016 by sarah

Math
What is the equation of direct variation given that y is 16 and x is 2?
Wednesday, May 25, 2016 by Dsimmons

math-need sir-steve badly asap
show that L{f(t)}=f(s) then L{e^(kt)}.f{(t)}=f(s-k) where k=costant L=laplace transformation
Wednesday, May 25, 2016 by dam

Math
There is an expression some people use that says, “What you put into it is what you get out of it.” People might use this expression to describe your skills at a sport or activity and how that relates to the amount of time and effort you spend practicing that ...
Wednesday, May 25, 2016 by Princess

Math
Of 43 plays attributed to a playwright 16 are comedies, 15 are tragedies, 12 are histories. If one play is selected random find the odds against selecting a history?
Wednesday, May 25, 2016 by Angela

Math
3. 2x^2+6x-7x+8-3x^2+1 A. 2x^2+x+9 B. -2x^2-x-9 C. -x^2-x+9 D. x^2+9 4. What are the coefficents in the polynomial 4x^2+3x-3 A. 4,-3,-3 B. 4,3 C. 4,3,3 D. -4,-3 6. (7x^2-x-2)-(6x^3+3) A. 6x^3-+7x^2-x-5 B. -6x^3+7x^2-x+1 C. -x^3-x-5 D. x^2-x+1 7. Suppose you earn 6t-2 dollars ...
Wednesday, May 25, 2016 by Gazelle

Math
Find slope of the tangent like when x=1 and y=12
Wednesday, May 25, 2016 by Lilly

math
constract a triangle whose perimeter is 12.5cm and base angles are 60degree and 80degree?
Wednesday, May 25, 2016 by anzar

math
A water pitcher contains 2323 gallon of water. You add 5757 gallon of water to the pitcher. How much water does the pitcher contain? Write the answer in simplest form.
Wednesday, May 25, 2016 by yuo

Math Help!
I ned help in Unit 4 Lesson 12 Graphing in the Coordinate Plane Unit Test. I am from connections academy in 7th grade Semester 2! I NEED HELP ASAP
Wednesday, May 25, 2016 by IceLady900

Math/ ratios/ Fractions/ Singapore Math
Holly and Ross had a total of $60. After holly spent 1/4 of her money and Ross spent $5, the ratio of Holly's money became 1:2. How much more money did Ross have at the beginning?
Wednesday, May 25, 2016 by Catania

Math/ more ratios
Sam, Jimmy, And Andre shared a number of pennies in the ratio 6:5:7. Sam and Andre received a total of 754 pennies. How many more pennies did Jimmy receive than Andre? This doesn't make sense!! Please help. I hate ratios so much but if someone could help me understand this...
Wednesday, May 25, 2016 by Catania

math
a box contains 3 red,2 blue,and 1 yellow marble. john picks a marble, does not put it replace it, then his brother tom picks a marble make a probability tree for the outcomes
Wednesday, May 25, 2016 by shalomi

Math
A lecture hall has 108 chairs arranged in rows with the same number of chairs in each row. You eliminate three rows by adding six chairs to each of the other rows. How many rows are there now ? How many chairs are in each row ?
Wednesday, May 25, 2016 by Lim

math
Sandra has some money she spends 2/7 of it on a book & she spends 2/5 of the remaining money on a bag Sandra has $15 left how much did she have to start
Wednesday, May 25, 2016 by olivia

Math
the larger of two numbers is three times the smaller number, and their difference id 34. find the two numbers.
Wednesday, May 25, 2016 by mike

math
fatima bought 1200 eggs at rs.16 a dozen. At what price per hundred must she sell the eggs so as to earn a profit of 15%. plz its urgent very very urgent try to solve soon.....
Wednesday, May 25, 2016 by jeo

math
fatima bought 1200 eggs at rs.16 a dozen. At what price per hundred must she sell the eggs so as to earn a profit of 15%. /////****urgent****////
Wednesday, May 25, 2016 by sad

math
when 2 is added to both the numerator and denominator, of a positive fraction, the fraction thus obtained is 3/5. If the denominator is 6 more than the numerator,what is the original value of the denominator?
Wednesday, May 25, 2016 by Anonymous

math
If 35% of people surveyed prefer orange to apples.Out of 475 people surveyed how many can be predicted to prefer orange
Tuesday, May 24, 2016 by jonathan

Math-Calc
Water is leaking out of an inverted conical tank at a rate of 14000.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 8 meters and the diameter at the top is 6.5 meters. If the water level is rising at...
Tuesday, May 24, 2016 by Joey

Calc-Math
y^2+xy-3x=-5 dy/dt=-4 x=3 y=1 find dx/dt. i tried doing 2y(dy/dt)+ydx/dt-3=0 but i am not getting the right answer. Please tell me where i am going wrong.
Tuesday, May 24, 2016 by Brittney

Math
A rock falls straight down from a height of 10 m. How long will it take the rock to hit the ground?
Tuesday, May 24, 2016 by Chloe

Math
Scary guy is going to use 22/7 to find the exact circumference. He is wrong. Why?
Tuesday, May 24, 2016 by Miracle

Math
A 20 m vertical telephone pole is standing on a 15 degree slope. One guy wire is attached 30 m up the slope and another guy wire is attached 30 m down the slope. What is the length of the guy wire attached down the slope? I don't understand the question or what the diagram...
Tuesday, May 24, 2016 by Emily J

math
The area if a rectangle is x3y4. Which expression represents the length if the width is x2y
Tuesday, May 24, 2016 by Scott

Math
Write a variable on both sides that has infinite solutions.
Tuesday, May 24, 2016 by Anon

Financial Math
6 character computer password is made up of 4 numbers followed by 2 letters. How many different passwords are possible?
Tuesday, May 24, 2016 by Sandra

Math help ;-;
Solve the equation. Check your answer. 5x-4(x+9)=2x-3 can anyone help me how to do this plz ;-; sorry
Tuesday, May 24, 2016 by Leo

Math
A rectangle is bounded by the x-axis, the y-axis, and the line y = (4-x)/4. Find the maximum area of such a rectangle.
Tuesday, May 24, 2016 by Jessica

Precal/math
for composite functions i have a graph of f(x) and g(x) and i have to find (f⋅g)(0) so is that when f and g is 0 on the x or y?
Tuesday, May 24, 2016 by Maxx

Math
20'ladder placed 5'from base of house. How high up ladder reach?
Tuesday, May 24, 2016 by Rocky

my son's math help please
Aaron baked two identical cakes.He cut one into 9 equal slices and the other into 18 equal slices.Which is greater 2/3 of the 9 slice cake or 1/3 of the 18 slice cake?
Tuesday, May 24, 2016 by Kevin

math
V = $20,000 - $2,500x describes the value in dollars of a certain model of car after it is x years old
Tuesday, May 24, 2016 by Anonymous

math
Verify that sec(θ)/csc(θ)-cot(θ) - sec(θ)/csc(θ)-cot(θ) = 2csc(θ) is an identity. please help! thank you!
Tuesday, May 24, 2016 by louren

Math-Algebra
A family is building a circular fountain in the backyard. The yard is rectangular and measures 7x by 6x and the fountain is going to be circular with a radius of 2x. Once the fountain is built, what will be the area of the remaining yard? Can someone please walk me through ...
Tuesday, May 24, 2016 by Lady Phantomhive

Math
In a group of 10boys each boy had 2 hats how many hats did they have?
Tuesday, May 24, 2016 by Kayla

math
Springfield has an elevation of −150 feet. Greenville is 3 times as far below sea level as Springfield. What is Greenville’s elevation, in feet? is the answer -50 feet
Tuesday, May 24, 2016 by roma

Math
Suppose f (x) = x^3 + x and g(x) = f^-1(x). Find g'(2). I am confused about how to find the inverse of f because I can't isolate y. Could you please help? Thanks!
Tuesday, May 24, 2016 by Jessica

math
what is the missing value to the nearest hundredth? tan [] = 12 I really need some help. I don't understand this :(
Tuesday, May 24, 2016 by Leah

Math
Marco is analyzing sales data from the week and writes down the numbers shown 10,12,15,6,20,13,17 what is the interquartile range ?
Tuesday, May 24, 2016 by PLEASE ANSWER

Math
in the expression -7x - 5x^2 + 5, what is the coefficient of x? A.) 7 B.) 5 C.) -7 D.) -5 Can anybody help me with the math? It's not my best subject... (or if you'd just give me the answer that would be fine too, XD.)
Tuesday, May 24, 2016 by Elizah Manam

Math
A 2-digit number is twice the difference of its digits. What is the number?
Tuesday, May 24, 2016 by Brian

math
1. (m^2-m+3)+(m-1) a. m^2-m-2** b. m^2+2 c. m^2-2 d. m^2+m+2 2. (5x^2+x-3)-(-2x^3+4) a. -2x^3+5x^2+x-7 b. -2x^3+5x^2+x+1** c. 2x^3+5x^2+x-7 d. 2x^3+5x^2+x+1 3. f^2*f^3 a. f^5** b. f^6 c. (2f)^5 d. (2f)^6 4. 64^10/64^5 a.64 10/5 b.64^50 c.64^15** d.64^5 5. x^16/x^3 a.x 16/3 b.x...
Tuesday, May 24, 2016 by please help

math
1. (m^2-m+3)+(m-1) a. m^2-m-2 b. m^2+2** c. m^2-2 d. m^2+m+2 2. (5x^2+x-3)-(-2x^3+4) a. -2x^3+5x^2+x-7 b. -2x^3+5x^2+x+1 c. 2x^3+5x^2+x-7*
Tuesday, May 24, 2016 by please help

Math
1. Determine whether the two figures are similar. If so, give the similarity ratio of the smaller figure to the larger figure. The figures are not drawn to scale. Figure One: (CYLINDER) Height is 9.9 and radius is 1.3 Figure Two: (CYLINDER) Height is 23.76 and radius is 3.12 A...
Tuesday, May 24, 2016 by Tim

Math
One mile is equal to 5280 feet. You've walked 0.20 mile on a track. How many feet have you walked
Tuesday, May 24, 2016 by Karry Smith

math
Megan and Jake both live on the same street that the library is on. Jake - 4.5kms from the library Megan is 5.5kms from the library How many kilometers (km) apart do Megan and Jake live?
Tuesday, May 24, 2016 by roma

Math
A 2-digit number is twice the difference of its digits. What is the number?
Tuesday, May 24, 2016 by Brian

math
The cost of a student ticket to the school play is $7. Write an equation that correctly relates the total cost, c, for a particular number, s, of student tickets purchased. Identify the independent and dependent variables.
Tuesday, May 24, 2016 by Anonymous

math
Given that sinx = cos(x+20o) write tanx in terms of sin20o and cos 20o. a) Hence find the values of tan x. b) Find the general solution of 3sec2y=5(1+tany)
Tuesday, May 24, 2016 by sue

Math
Cuboid has a length 13cm width 9cm and height 8cm calculate the surface area
Tuesday, May 24, 2016 by Chibuike

math
Y=sin(cosx2)find dy/dx
Tuesday, May 24, 2016 by Anonymous

Business Math
You can lease a $17,000 car for $500 per month. For how long (to the nearest year) should you lease the car so that your monthly payments are lower than if you were purchasing it with an 7%-per-year loan?
Tuesday, May 24, 2016 by lita

Business Math
Meg's pension plan is an annuity with a guaranteed return of 3% per year (compounded quarterly). She would like to retire with a pension of $50,000 per quarter for 10 years. If she works 26 years before retiring, how much money must she and her employer deposit each ...
Tuesday, May 24, 2016 by dika

Math
rose is getting a snare drum for her birthday! They are 14 inches in diameter. I want to wrap ribbon around 4 times. How many inches of ribbon do i need? write the formula, and show your work.
Tuesday, May 24, 2016 by Miracle

Math
Rony, who is sixteen years old, is four times as old as his sister. How old will Rony be when he is twice as old as his sister?
Tuesday, May 24, 2016 by Anonymous

math
the population of a town was 50000 in 1990. in 2000 it rose to 80000. find the percentage increase of the population.
Tuesday, May 24, 2016 by javed

math consumer business cat
Four factors that could threaten or limit the core functions of the media
Monday, May 23, 2016 by sammy

Math
Find the probability of each event. Spinning red on a spinner with equally sized red, blue, yellow, and green sectors, and flipping a coin that lands tails up
Monday, May 23, 2016 by John

Math
I have my answers but need them checked and i probably got them wrong so if you can please explain. #1: Which of the following sample spaces correctly lists all the possible outcomes for flipping a coin and spinning a four-colored spinner (red, blue, green, and yellow)? (A) H-...
Monday, May 23, 2016 by Leilynn22

Math
A farmer builds a straight fence that's 49 ft. He puts a post every 7ft. How many post does he need. A post is at the beginning and end How can you show the relationships in the problem Solve and explain your reasoning 8 post. I cans draw a picture
Monday, May 23, 2016 by Anonymous

Math
1. What is the scale factor of a cube with volume 1331^3 to a cube with volume 85184^3? A) 121:1,936 B) 1:64 C) 4:1 D) 1:4 I'm not really quite sure how to do this question, but I got 1:4, is that correct?
Monday, May 23, 2016 by Tim

Math
A car traveled 20 kilometers at 2pm and 90 km at 5pm pm how fast did the car travel? Round to the nearest whole number
Monday, May 23, 2016 by Sue

Math-reasoning
A farmer wants to build a straight fence with a post every 7 feet. Each end has a post. For a fence that is 49 feet long, how many posts will the farmer need? Describe the quantities given Tell how you can show the relationships in the problem Solve and explain your reasoning ...
Monday, May 23, 2016 by Kennedy

Math
What's the rule the function machine using, input 22,output 12,input 23,output 16,input 24,output 20,input 25,output24,input 26,output 28
Monday, May 23, 2016 by Anonymous

Math
In health class, students recorded the weights of the sandwiches they have for lunch. The weights are shown in the line plot below. What is the average weight of one sandwich? X X X. X. X. X X. X. X. X 1/8. 1/4 3/8 1/2
Monday, May 23, 2016 by Tyrik

Math
The sum of two numbers is five. The sum of the squares of the two numbers is thirteen. Find the two numbers. (Enter your answers as a comma-separated list.)
Monday, May 23, 2016 by Irma

Math
What is the surface area of a pyramid height of 4.5in. and base of 5in.?
Monday, May 23, 2016 by Kaylee

Math
What is the surface area of a pyramid with a base of 7cm and height of 9.1cm?
Monday, May 23, 2016 by Kaylee

Math
How many solution are there in the following system of equations? x=-6y+4 2x+12y=8 Please help me and explain it to me! I would really appreciate if you guys answered it!
Monday, May 23, 2016 by Helen

Math
Solve the equation on the interval [0, 2π). tan2x sin x = tan2x would it be 0, pi/2 ?
Monday, May 23, 2016 by Liz

Math
Solve the equation on the interval [0, 2π). cos x + 2 cos x sin x = 0 would the answer be 7pi/6 , 11pi/6 ?
Monday, May 23, 2016 by Liz

Math
what is the order of the numbers from least to greatest, a=6.2*10^-5 b=12.3*10^-7 c=5.2*10^3d=3.7*10^-5 A)d<c<a<b B)B<d<a<c C)d<c<a<b D)B<a<c<d
Monday, May 23, 2016 by Ebryana

College Algebra math
A plane flies due east for 35 miles and then due south until it is 37 miles from its starting point. How far south did the plane fly?
Monday, May 23, 2016 by Kelly

Math
Three picture frames are on a dresser.two are shaped like squares and the other is a trapazoid. how many sides are there in the frames altogether? Please help today
Monday, May 23, 2016 by Lucy

Math
A car travled 10km at 2pm and by 5pm it travled 80km how far did it travel round to the nearest whole number
Monday, May 23, 2016 by Lea

Math
The surface area of a right cone is 55π cm squared. Find the radius if the slant height is 6cm.
Monday, May 23, 2016 by Michelle

math
A farmer has dogs and chickens running around in his backyard. There are a total of 36 animals, and the farmer counts a total of 56 legs. The farmer can use a system of equations to determine how many of each animal there are. He claims that one of the equations in the system ...
Monday, May 23, 2016 by Steve

Math
When y=3, which of the following is FALSE? Would it be: (A) y is prime and y is odd, (B) y is odd or y is even, (C) y is not prime and y I odd, or (D) y is odd and 2y is even. So would the answer be A? I had chosen the answer But that was wrong.
Monday, May 23, 2016 by Carol Kelly

Math
A 19-liter mixture consists by volume of 1 part juice to 18 parts water. If x liters of juice and y liters of water are added to this mixture to make a 54-liter mixture consisting by volume of 1 part juice to 2 parts water, what is the value of x. I'm not sure, but would ...
Monday, May 23, 2016 by Carol Kelly

Math
If m and p are positive integers and (m + p)x m is even, which of the following must be true? Would it be: (A) if m is odd, then p is odd. (B) if m is odd, then p is even. (C) if m is even, then p is even and (D) if m is even, then p is odd. I had chosen D and that was wrong. ...
Monday, May 23, 2016 by Carol Kelly

Math
The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the ...
Monday, May 23, 2016 by Liz

Math
A shop owner increased the selling price of a shirt from $20.00 to $26.00. By what percentage was the price increased? I got the answer of 30 percent.
Monday, May 23, 2016 by Carol Kelly

Math
In a class of 50 students, 18 take music, 26 take art and 2 take both art and music. How many students in the class are not enrolled in either music or art? The answer I came up with is 8. Would that be correct?
Monday, May 23, 2016 by Carol Kelly

Math
John, Kevin, and Jane have $120.00. Jane has a third of what John has and Kevin has Twice as much as Jane. How much money, in dollars, does Kevin have? I came up with $40.00. Is this correct?
Monday, May 23, 2016 by Carol Kelly

math
How many 4 inch pieces can I get out of 30 feet
Monday, May 23, 2016 by Anonymous

MATH PLZ HELP
4) A number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 5. A. 1/6*** B. 1/3 C. 1/4 D. 2/3 An number cube is rolled 360 times and the results are recorded as follows:61 ones 26 twos 36 threes 76 fours 73 fives and 88 sixes ...
Monday, May 23, 2016 by Alexia Marsel

Math
Mary has a monthly salary of $1200.00. She spends $240.00 per month on food. What percent of her monthly salary does she spend on food? I came up with the answer of 20%.
Monday, May 23, 2016 by Carol Kelly

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