Thursday
May 26, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

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

Math
Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85 percent go a sticker. What percent of the students ( rounded to the nearest full percentage number) received a sticker? I came up with 60%. Is that ...
Monday, May 23, 2016 by Carol Kelly

Math
PLS HELP ASAP! 1. Complete the function table. Then write a rule for the function. Input: -3,-2,-1,0,1 Output:_,-4_,_,-1
Monday, May 23, 2016 by I-like_anime!!!

Math (Vectors)
Consider the vector v=-5.7i-7.2j Approximate to the nearest tenth of degree the angle vector v makes with the positive horizontal direction?
Monday, May 23, 2016 by Ray

math
A swimming pool in the shape of a right rectangular prism measures 24 feet by 16 feet and is 4.5 feet deep across the entire pool. What is the volume of the swimming pool in cubic feet? --- cubic feet
Monday, May 23, 2016 by jasmine

math
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. -3y^2 + y = -6
Monday, May 23, 2016 by lana davis

math hurry
1. x^9/x^2 a.x^11 b.x^7 c.7 d.x^5 2. h^14/h^5 a.h^-9 b.1/h^9 c.h^19 d.h^9 3. 4^4/4^6 a.-16 b.16 c.1/16 d.-1/16 4. 5^0 a.0 b.5 c.1 d.-5 6.-2r(8r+5) a.-16r^2+5 b.-16r^2+10 c.-16r^2+10r d.-16r^2-10 7.2a(a^2+4a) a.2a^2+6a^2 b.2a^3+8a^2 c.2a+6a d.2a^3+6a^2 8.(3y)(3y-2) a. 9y^2-6 b...
Monday, May 23, 2016 by please help

Math Can you help me?
A football player gains 7 yards , loses 4 yards , and gained 12 yards. write his gains and losses as integers. If he started at zero where does he end up?
Monday, May 23, 2016 by Hmm.

Math
Amy baked some chocolate and vanilla muffins. She gave away 3/5 of the chocolate muffins and 1/7 of the vanilla muffins. She gave exactly half of the total number of muffins. In the end, she was left with 24 more chocolate muffins than vanilla muffins. How many chocolate ...
Monday, May 23, 2016 by Shermaine

math
1. x^9/x^2 a.x^11 b.x^7 c.7 d.x^5 2. h^14/h^5 a.h^-9 b.1/h^9 c.h^19 d.h^9 3. 4^4/4^6 a.-16 b.16 c.1/16 d.-1/16 4. 5^0 a.0 b.5 c.1 d.-5 6.-2r(8r+5) a.-16r^2+5 b.-16r^2+10 c.-16r^2+10r d.-16r^2-10 7.2a(a^2+4a) a.2a^2+6a^2 b.2a^3+8a^2 c.2a+6a d.2a^3+6a^2 8.(3y)(3y-2) a. 9y^2-6 b...
Monday, May 23, 2016 by please help

math
certain superstores will often price match or even beat a competitor's price by 10%.the function g(x)=0.90x represents the sale price of a piece of merchandise at such a superstore.the function f(x)=0.13x represents the HST owed on a purchase with a selling price of x ...
Monday, May 23, 2016 by steve

Math
If i pick a number anywhere from 1 to 1000 at random, what is the probability that the number is divisible by either 2 or 5?
Monday, May 23, 2016 by Lilly

Math
Jasper's friend Tina challenges him to a game of Unders and Overs. He's never played the game before, so Tina explains the rules: "You bet what the total value will be when I roll two dice. Then, I roll the dice and their total determines whether you win money off...
Monday, May 23, 2016 by Jennie

Math; Solve by Graphing
Which description best describes the solution to the following system of equations? y = −x + 4 y = 3x + 3 Line y = −x + 4 intersects the line y = 3x + 3. Lines y = −x + 4 and y = 3x + 3 intersect the x-axis. Lines y = −x + 4 and y = 3x + 3 intersect the...
Monday, May 23, 2016 by Pickle

Math
Find the complement and supplement of the angle shown. The picture is of an acute angle that is measured 52 degrees. How am I supposed to find the complement and supplement of the angle? Please help.
Monday, May 23, 2016 by Please Help

Math
A rectangular aquarium has a length of 18 inches, a width of 8 inches; and a height of 12 inches. What is the maximum volume of water that the aquarium can hold? Use V = lwh
Monday, May 23, 2016 by Tayler

Math
There are 44 rabbits in a mushroom-shaped house. 8 of them are moving out soon. What fraction of the rabbits are moving?
Monday, May 23, 2016 by Vaishnavi

Math
Jenny has 12 kids. 2/6 of the kids are girls. How many daughters does Jenny have?
Monday, May 23, 2016 by Vaishnavi

Math
1200 soldiers in a fort had enough food for 28 days. After 4 days, some soilders were sent to another fort and thus, the food lasted for 38 more days. How many soilders left the fort?
Monday, May 23, 2016 by Devleena

Math
A farm slaughtered 25 chickens per month. It was 5/12 of the total number of chickens. How many chickens will survive each month?
Monday, May 23, 2016 by Vaishnavi

math
The Third angle of a Isosceles triangle is 16 degree less than the sum of the two equal angles. Find the three angles of the triangle
Monday, May 23, 2016 by Anonymous

math
The Third angle of a Isosceles triangle is 16 degree less than the sum of the two equal angles. Find the three angles of the triangle
Monday, May 23, 2016 by Anonymous

math
The Third angle of a Isosceles triangle is 16 degree less than the sum of the two equal angles. Find the three angles of the triangle
Monday, May 23, 2016 by Anonymous

math
the cost to manufacture a product is proportional to the quantity produced,
Monday, May 23, 2016 by Anonymous

Math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 100 meters and a diameter of 50 meters. It takes the wheel seven minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates counter clockwise, how ...
Monday, May 23, 2016 by Kori

Math
In a standard deck of 52 cards whats the probability of getting a 2 or a 7 of diamonds.
Sunday, May 22, 2016 by Aubrey T.

Geometry,Math
Is my data correct? For package design I will use a cylinder. The Equation for the surface area of a cylinder is A = 2 π r h + 2 π r² . The equation for the volume of a cylinder is V = π r² h. I have chosen a cylinder for my cereal box because I ...
Sunday, May 22, 2016 by Help!

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 ...
Sunday, May 22, 2016 by Steve

Math
Value has a bag that contains,9 blue marbles and , 13 yellow marbles she selects a marble at random,and then without replacing the first one selects another marble at random what is the probability that value selects a blue marble and then a yellow marble to round to the ...
Sunday, May 22, 2016 by Anonymous

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 ...
Sunday, May 22, 2016 by Steve

Math
Form the perfect square trinomial in the process of completing the square. What is the value of c? x^2 + 3x + c = 7/4 + c c =
Sunday, May 22, 2016 by Sara

math
Two mechanical shafts are joined together at their ends. Together their total is 18 and 2/9 ft. if one shaft is 13 and 4/7 ft long , how long must the other shaft be?
Sunday, May 22, 2016 by Kiana

Geometry/Math
What Formula would I use to calculate how much my cardboard box with a surface area of 1578cm and a volume of 3078 cm would cost if cardboard was $0.05 per square inch.
Sunday, May 22, 2016 by Help!

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 ...
Sunday, May 22, 2016 by Steve

Math
Check my answers please? There are only 10 The figure below shows a triangle with vertices A and B on a circle and vertex C outside it. Side AC is tangent to the circle. Side BC is a secant intersecting the circle at point X: The figure shows a circle with points A and B on it...
Sunday, May 22, 2016 by Caitlin

Math
If you picked one card from a standard deck of 52 playing cards, what would be the probability of picking the ace of spades?
Sunday, May 22, 2016 by Michlle

Math
This year Grandma's age and Mother's age are the same but with the digits reversed. One year ago, Grandma was twice as old as Mother. How old are Grandma and Mother today?
Sunday, May 22, 2016 by John baltista

Easy Math
Draw a line with 3 distinct points on it. Label each with a different letter. How many different rays can you name using only three given points? a. 8 b. 6 c. 4 d. 2 Not quite sure. Could the answer possibly be four (c.)?
Sunday, May 22, 2016 by Please Help

math
The measure of angle A is 124 degrees. What is the correct classification for angle A? a. acute b. right c. obtuse d. straight I'm pretty sure it's c. Right?
Sunday, May 22, 2016 by Please Help

Math
the walls and ceiling of a hotel room need to painted. The floor is 20-foot square and the ceiling is 8 feet high. What is the surface area of the walls and ceiling to be painted? Ignore any doors or windows
Sunday, May 22, 2016 by Derp

Math
Janet uses 3 feet of ribbon to decorate each pillow. The ribbon comes in 225-foot rolls. How many pillows will she be able to decorate with one roll of ribbon? Will there be anything ribbon left over?
Sunday, May 22, 2016 by Johan

Math (pre-celc 12)
Factor 2x^4-62x^2+60x I get: 2x(x^3-31x+30) 2x(x-30)(x^2-1) 2x(x-30)(x-1)(x+1) But that's wrong. It should be (I think): 2x(x-1)(x-5)(x+6) Please show me where I went wrong.
Sunday, May 22, 2016 by Jana

Math
Six apples cost as much as four pears. Each pear costs $4 more than each Apple. What is the cost of one pear?
Sunday, May 22, 2016 by Brian

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