Saturday
December 10, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

Math
The air speed of a plane is 150 mph. If the plane traveled the same distance in two hours with the wind as it flew in 3 hours against the wind, what was the wind speed?
Monday, November 28, 2016 by Raquel

Math
Not counting the "turn around" , a helicopter carrying passengers between an airport and the roof of a downtown skycraper 20 miles away can make the round trip in 15 minutes. The helicopter flies 2 miles away with the wind when the time it flies 1 mike againstnthe ...
Monday, November 28, 2016 by Raquel

Math
Martha is twice as old as her younger brother. The sum oh their ages is 36. How old are they?
Monday, November 28, 2016 by Jo-Anna

Math
Joe takes twice as long as to row against a current as with it. If he rows 6 miles an hour in still water, what is the rate of the water?
Monday, November 28, 2016 by Raquel

Math
A salmon swims 15 miles downstream from its birth to the ocean in 3 hours. The return trip upstream to spawn takes 5 hours. How fast does the salmon swim in still water?
Monday, November 28, 2016 by Raquel

math
A fair die is thrown twice, what is the probability that the product of the outcome is a perfect square?
Monday, November 28, 2016 by ABIOLA

math
g(x)=45x^5 For the given function, construct a new function whose graph is the graph of the original function shifted left by two units, then multiplied by 1/5, and then shifted down by three units. MY ANSWER: 9(x^5+3)-3 However it says I'm wrong please help.
Monday, November 28, 2016 by Brita

Math
-8y = 2x -7 +9y +7= 2x Determine whether each equation represents a direct variation. If it does, find the constant of variation.
Monday, November 28, 2016 by Mike

Math
Find the set of all z such that neither 2+z nor 2-z is in the interval (-1,1]. Express your answer as an interval or as a union of intervals.
Monday, November 28, 2016 by Jeff

Math
Find the cost of each item in 5 years, assuming an inflation rate of 8%. (Round each answer to the nearest cent.)
Monday, November 28, 2016 by Soraya

Math
The coordinate plane below represents a city. Points A through F are schools in the city. graph of coordinate plane. Point A is at negative 5, 5. Point B is at negative 4, negative 2. Point C is at 2, 1. Point D is at negative 2, 4. Point E is at 2, 4. Point F is at 3, ...
Monday, November 28, 2016 by Bea

Math
Two shaded identical rectangular decorative tiles are first placed (one each) at the top and at the base of a door frame for a hobbit’s house, as shown in Figure 1. The distance from W to H is 45 inches. Then the same two tiles are rearranged at the top and at the base ...
Monday, November 28, 2016 by Edgar

Business Math
Any help at all is deeply appreciated. I am trying to figure out the formulas to use for the following problems: 1. Suppose that in a monopoly market the total cost per week of producing a high tech product is given by C(x) =3600+100x+2x^2. Suppose further that the weekly ...
Sunday, November 27, 2016 by pypski

Math
James shares 9/5 of his chocolate bar with his 2 friends. How much does each person get
Sunday, November 27, 2016 by Kadie

6 grade math area perimeter
I want to make sure this one is ok. I know the area now I need perimeter. It's a long line it's a 1× 6 and on top in the middle is another box 1×2 shape the area I got was 8 sq.units. I think perimeter is 15units. Is this right
Sunday, November 27, 2016 by Jessica

6 grade math area perimeter
I found the area but I need help on perimeter. The shape in form of letter L. The long is a 1×4 and the box on top is a 1×1. THE AREA IS 5 sq.units I think perimeter is 12 is this right
Sunday, November 27, 2016 by Jessica

Math
Jasmine has taken a quiz she ks on question 16 and has completed 20% of the quiz. How many questions does the quiz have?
Sunday, November 27, 2016 by Anonymous

Math (calculus) (optimization)
A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder must have a volume of 4000 cubic feet. The hemispherical ends cost twice as much per square foot of surface area as the sides. Find the dimensions that will minimize cost. I got as far as ...
Sunday, November 27, 2016 by Ray

Business Math
A couple purchased a home 5 years ago with a 20-year mortgage for $50,000 at an interest rate of 6% compounded monthly. The home is now valued at $90,000. A) How much are the couple's monthly payments? B)What is their balance after 7 years and how much equity is in their ...
Sunday, November 27, 2016 by pypski

Business Math
A couple is saving for their child's college. They decided they would like to have $50,000 in 18 years. If they can earn 4.5% compounded semiannually, how much should they deposit at the beginning of each period?
Sunday, November 27, 2016 by pypski

Business Math
Bond Pricing: A 20-year corporate bond has a maturity value of $25, 000 and coupons are paid at 5% at the end of each year. If an investor wants to earn a yield of 7% compounded semiannually, what should she or he pay for this bond?
Sunday, November 27, 2016 by pypski

Business Math
Suppose that in a monopoly market the total cost per week of producing a high tech product is given by C(x) =3600+100x+2x^2. Suppose further that the weekly demand function for this product is p=500-2x. Find the number of units that will give the break even points for the ...
Sunday, November 27, 2016 by pypski

Math
A volleyball team has won 7 games during their 21 game season. What is the ratio of losses to total games?
Sunday, November 27, 2016 by Israel

math
You have a 4/5 quart bottle of pineapple juice. How many 4/45 quart glasses can you fill?
Sunday, November 27, 2016 by kenyatta mister

Math
Four ways to round to 400
Sunday, November 27, 2016 by James

Math
A radioactive substance decays to the formula N=8e^-0.6t , where N is the number of milligrams present after t hours. Determine the initial amount of the substance to the nearest 10th of an hour, determine the half life of the substance, and determine the number of hours for 0...
Sunday, November 27, 2016 by pypski

math
the mystery number is an odd number. The digit in tens place is equal to digit in the ones place. The sum of the digit is more than 10 and less than 15. what the number?
Sunday, November 27, 2016 by amy duncan

Math
The area of an isosceles right triangle decreases at a rate of 5 cm² per second. At what rate is the hypotenuse changing when each of the other sides has length 10 cm? So far I have: Given: dA/dt= 5cm^2/s Find: dH/dt when b&h= 10cm And h= root 200(?)
Sunday, November 27, 2016 by Kaylee

math
In a football game, a touchdown with an extra point is worth 7 points and a field goal is worth 3 points. Suppose that in a game the only scoring done by teams are touchdowns please help!!!!
Sunday, November 27, 2016 by Anonymous

Math
what two numbers rounds to 600
Sunday, November 27, 2016 by James

Math
Molly has a jar containing 4 yellow 3 blue 3 green and 2 orange marbles If Molly removes one marble without looking record the color does not replace it before drawing again what is the probability that she will remove two yellow marbles
Sunday, November 27, 2016 by Skye

Math
F(x)= 3/2x +b In the function above, b is a constant. If f(6)=7, what is the value of f(-2) ?
Sunday, November 27, 2016 by Amy

Math
If (t/5)/(t-5)=10 what is the value of t ?
Sunday, November 27, 2016 by Amy

Math
Simplify -i-2-(6-4i)-(5-2i)
Sunday, November 27, 2016 by Emma

Math
Combine like terms. 7a square root 2 - a square root 2 + 16= My answer would be as follows: 7a square root 2 + 16 Can you please check to see if I got this correct
Sunday, November 27, 2016 by Donald

math
Tickets for a certain show cost ?$15?, $24?, ?or, for VIP? seats, ?$41. If ninenine times as many ?$15 tickets were sold as VIP? tickets, and the number of ?$15 tickets sold was 55 more than the sum of the number of ?$24 tickets and VIP? tickets, sales of all three kinds of ...
Sunday, November 27, 2016 by NORma

Math
What two numbers round to 700
Sunday, November 27, 2016 by James

Math-Probability
A multiple choice test has 10 items and each problem has four choices A, B, C, and D. How many different ways can the answer sheet be completed?
Sunday, November 27, 2016 by Paige

Math algebra
If f(x) =2x-1, then f^-1(x)=???
Sunday, November 27, 2016 by Emily

Math
How does this probability of giving birth to three boys after each other?a tree diagram can then be used.
Sunday, November 27, 2016 by Bathabile

math algebra
Find an eqaution for the line passing through (1,3) and perpendicular to the line 3y=-2x+6
Sunday, November 27, 2016 by niki

Math
Combine like terms. 6b plus 7b-10= Would I add 6b + 7b=13b-10 13b-10=3b? Would this be correct? Please advise.
Sunday, November 27, 2016 by Donald

Math
Combine like terms. 32y plus 5y= I don't know what to do. I don't understand this. Please help.
Sunday, November 27, 2016 by Donald

Math
Question. I have some math problems that I really need help with and this is all new to me. The direction are as follows: Combine like terms 7x4 -5x4 the number four is square root. I don't understand at all what to do. Please help.
Sunday, November 27, 2016 by Donald

Math
A survey about the student government program at a school finds the following results. 190 students like the program 135 students think the program is unnecessary 220 students plan on running for student government next year. If a circle graph were made from this data, what ...
Sunday, November 27, 2016 by Embershy

math
45 miles per hour_______= feet per second
Sunday, November 27, 2016 by tnzil

math
a car travels 480 miles in 8 hours. what is the unit rate
Sunday, November 27, 2016 by tnzil

math
Solve the quadratic equation, 2x^2-5x+3
Sunday, November 27, 2016 by shima

Math
-5+?-50/10 Solve
Sunday, November 27, 2016 by Aria

math
If 3 people worked and earned $5554.52 in one day. How much does each person earn if one worked for 5 hours, the other worked 7 and the other worked 8 hours?
Sunday, November 27, 2016 by Anonymous

Math algebra
Assume that the stopping distance of a van varies directly with the sqaure of the speed . A van traveling 40 miles per hour can stop in 60 feet. If the van is traveling 56 miles per hour, what is its stopping distance?
Sunday, November 27, 2016 by Kyla

Math algebra
A varies jointly as R1 and R2 and inversely as the sqaure of L. Find A when R1=180, R2=8,L=5, and k=3/2 P.S the 1 and 2 next to the R are exponents at the bottom of R and not at the top.
Sunday, November 27, 2016 by Dila

math
Solve the quadratic equation, 2 x2 - 5 x+3
Sunday, November 27, 2016 by sara

Math
Two sI'm of money in the ratio 5:1 .if the smaller amount is 15 kobo.what is the largest?
Sunday, November 27, 2016 by Demmy

Math
Sarah wants to install new carpet in her living room. The small square is titles 2yd by 2yd and will not be carpeted. How many square yards of carpet will she need if its 6yd by 4yd? ---------------6yd---------------| |. | |. I ______ I 4yd I I 2yd I I_2yd_I_______________|
Sunday, November 27, 2016 by Norman

Math
find the velocity and direction of flight of a plane that is headed at 126 degrees with a ground speed of 215 mph in a 34 mi wind from south 36 degrees west
Sunday, November 27, 2016 by Anonymous

Math
I'm confused between using the terms "less than" in translating statements and phrases to expressions. What's the answer when the statement says:thrice a number less than fifty? I'm asking because sometimes expressions could be easily get just by putting...
Sunday, November 27, 2016 by Mars

MATH
5kg of flour and 4kg of sugar cost $14.80. If 3/4kg of flour cost as much as 3/5kg of sugar, what is the cost of 1kg of sugar?
Sunday, November 27, 2016 by YEOW

math
In a rhombus ABCD,diagonals AC and BD are respectively 8cm and 6cm , the length of each side of rhombus is
Sunday, November 27, 2016 by almoiz

Math (calculus) (mean values)
A company introduces a new product for which the number of units sold S is given by the equation below, where t is the time in months. s(t)=155(7-9/(2+t)) a) Find the average rate of change of s(t) during the first year. Which my answer was 1395/28 b) During what month of the ...
Sunday, November 27, 2016 by Ray

math
plss help equation for this statement the distance D travelled by a car varies directly as its speed s
Sunday, November 27, 2016 by Miranda

math
Find the surface area of one of small cubes to that of the larger cube if a cube of edge 5cm is cut into cubes, each of edge 1cm.
Sunday, November 27, 2016 by ggg

math
Find the total surface area of one of small cubes to that of the larger cube if a cube of edge 5cm is cut into cubes, each of edge 1cm.
Sunday, November 27, 2016 by ggg

Math
As a tornado moves, its speed increases. The functions S(d) = 93logd+65 relates the speed of the wind, S, in miles per hour, near the center of a tornado to the distance that the tornado has traveled,d, in miles. a) Graph this function. b) Calculate the average rate of change ...
Saturday, November 26, 2016 by NeedHelp

Math
The doubling function (y = y base0 2^(1/D)) can be used to model exponential growth when the doubling time is D. The bacterium Escherichia coli has a doubling period of 0.32 h. A culture of E. coli starts with 100 bacteria. a) Determine the equation for the number of bacteria...
Saturday, November 26, 2016 by NeedHelp

Math
There was 2/3 of 12 slice pizza on the table.Joe are 6 slices from that. what fraction of the whole pizza was left?
Saturday, November 26, 2016 by Selvi

Math
A cooperation must appoint a president, CEO, COO,and a CFO. It must also appoint a planning committee with 3 different members. There are 15 candidates and officers can also serve on the planning committee. How many different ways can the officers be appointed? How many ways ...
Saturday, November 26, 2016 by Anonymous

Math grade7
Macy's is having a special on Tuesday .you can buy each tshirt at its regular price or you can buy tshirt for $ $ 25 Julie bought one of each tshirt at sale price of $ 25.00 what percentage of the original total rice did Julie save. Harry Julie's best friend also paid...
Saturday, November 26, 2016 by Inna

Math
Suppose that Hortense and Mort can clean their entire house in 7 ?hours, while their? toddler, Mimi, just by being? around, can completely mess it up in only 5 hours. If Hortense and Mort clean house while Mimi is at her? grandmother's, and then start cleaning up after ...
Saturday, November 26, 2016 by Itati

Math
Biologists tagged 180 fish in a lake on January 1. On February? 1, they returned and collected a random sample of 4545 ?fish, 1515 of which had been previously tagged. On the basis of this? experiment, approximately how many fish does the lake? have?
Saturday, November 26, 2016 by Itati

Math
Using the letters A and B, the following two-letter code words can be formed: AA, AB, BB,Ba. Using the letters A, B, and C, how many different three-letter code words can be formed? I know that the answer is 27 from the answer sheet, but how? Can you please list the ...
Saturday, November 26, 2016 by Stephanie

Math
I am a two digit odd number between 80 and 90 my digits have the sum of 15 what i'm I.
Saturday, November 26, 2016 by Maurice

math
Tanisha's mother buys 38 lemons. They know it takes 8 lemons to make 80 ounces of lemonade. Does Tanisha need more lemons ?If not ,how many extra lemons does she have? If so, how many more lemons does she need ? Explain how you found your answer.
Saturday, November 26, 2016 by angle2016

Discrete Math
I need help for this question. I need to find the number of integer solutions for x1 + x2 + x3 + 2x4 + x5 = 68 I'm not sure what to do for 2x4
Saturday, November 26, 2016 by Ryback

Math
1. What type of graph does not show the number of times a response was given? (1 point) box-and-whisker plot line plot stem-and-leaf plot bar graph 2. Which of the following types of information is suited for display on a scatter plot? (1 point) relationship between favorite ...
Saturday, November 26, 2016 by Embershy

Math
Sean walk 3/4 of a mile in 15 minutes. At that same pace, how far, in miles, can Sean walk in 1 hour and 20 minutes?
Saturday, November 26, 2016 by Darryl

Math
How many 1/3 are there in 25/5
Saturday, November 26, 2016 by Kayla

Math
The Kelvin scale is an absolute temperature scale threat can be used to calculate percent change in temperatures.The formula to convert Celsius to Kelvin is K=C+ 273.15.What is the percent change if the temperature rises from 21*C to 29*C?Round to the nearest tenth.
Saturday, November 26, 2016 by lilbrandon1007

Math
If the internal diamter of a steel tube is 3cm and thickness 4mm,what is the external diamter?
Saturday, November 26, 2016 by Farhana

math
your school is putting on a prom fashion show, and you are in charge of building a platform to serve as a stage. Main stage is a rectangle and the runways is a square. the length of the main stage is three times the length of the runway and the width of the main stage is two ...
Saturday, November 26, 2016 by Laura

math
you want to buy three books that are on sale at 20% off. the original prices of the books are $2.50, $4.95, and $6.00. How much will you save?
Saturday, November 26, 2016 by Anonymous

MATH HELP NEEDED prt 2
–2v – 7 = –23 (1 point) 15******** 8 –8 –15 2. start fraction x over 3 end fraction – 10 = –12 (1 point) –6 –66 6****** 66 3. start fraction x over 5 end fraction + 6 = 10 (1 point) 44 30 20******** –20 4. 3(4 – 2x) = &#...
Saturday, November 26, 2016 by Bill Cipher

MATH HELP NEEDED
. –2v – 7 = –23 (1 point) 15******** 8 –8 –15 2. start fraction x over 3 end fraction – 10 = –12 (1 point) –6 –66 6****** 66 3. start fraction x over 5 end fraction + 6 = 10 (1 point) 44 30 20******** –20 4. 3(4 – 2x) = &#...
Saturday, November 26, 2016 by Bill Cipher

math
If f is a function such that the limit as x approaches a of the quotient of the quantity f of x minus f of a and the quantity x minus a equals 7, then which of the following statements must be true?
Saturday, November 26, 2016 by Anonymous

math
If f(?1) = ?3 and f prime of x equals the quotient of 4 times x squared and the quantity x cubed plus 3 , which of the following is the best approximation for f(–1.1) using local linearization
Saturday, November 26, 2016 by Anonymous

math
Which of the following is the best linear approximation for f(x) = sin(x) near x = ? seconds?
Saturday, November 26, 2016 by Anonymous

Math
-3<x+2<3 , solve x.
Saturday, November 26, 2016 by pompo

math
Use a table to llustratethe permutation of the following set of object A. A strawberry a chocolate and a sugar glazed donut arranged in a row B.A cup a glass and a might arranged in a row C. The five vowels of the alphabet arranged in a row D.Ways by which you can dress up if ...
Saturday, November 26, 2016 by goddess

Math
Find the resultant in magnitude and direction of forces 10N, 20N, 30N, 40N, acting respectively in the direction 60,120,180 and 270. I tried drawing out the forces with the respective angles but the angles are more than 360.#confused
Saturday, November 26, 2016 by Shade

math
Ways by which you can dress up if you have 3 skirts 4 shirts and 3 pairs of sandals?
Saturday, November 26, 2016 by goddess

math
Thr sum of three numbers is 33.The first no.is twice the third no.The second no.is one more than the first.Determine the nos.
Saturday, November 26, 2016 by Anonymous

Math
The sum of two nos is 40, the smaller no is 6 less than the larger no, Find the nos
Saturday, November 26, 2016 by Anonymous

Math
marvin wrote the following clues to describe a multiplication sentence. the product is close in value to 10. both factors are decimal number.the product has 3 decimal places.one factor is greater than one . The other factor is less than 1. Explain how you created your answer.
Saturday, November 26, 2016 by Carmen

Math
Place in order from least to greatest -8.2,0.4,2.4?
Friday, November 25, 2016 by Miy

Math
Evaluate the following expression: (2 x 3)>2 - 5>2 The answer I got was 11...How I got this answer was 6 x 6 = 36 and 5 x 5 = 25 then I subtracted 36-25=11`
Friday, November 25, 2016 by Donald

math
Mrs, jones is having a pizza party for 19 students. each pizza will be cut in 6 slices. how many pizzas will Mrs jones need to order?
Friday, November 25, 2016 by barbara

math
Use the distributive property to write an expression that is equivalent to the example below: 5(2x + 7) I think my answer is... 45.....How I got this answer was 5 x 2 + 5 x 7=45 10 + 35 = 45 Can you please double check my work?
Friday, November 25, 2016 by Donald

Math
Which of the following is equivalent to the expression 6m + 3? A)2(3m + 3) B)3(2m + 1) C)3(2m + 3) D)6(m + 3) The answer I got was B) 3(2m + 1). How I got this answer was 3 x 2 + 3 x 1 = 6m + 3.
Friday, November 25, 2016 by Donald

Math
At franklin middle school there are 360 students graduating this year after graduation 198 of the students will go to Wilson high school what percent of the graduating students will go to Wilson high school
Friday, November 25, 2016 by Jenny

Math
Science is the favorite subject of 73% of student at a school. There are 700 students at the school. How many of them like science best?
Friday, November 25, 2016 by Jenny

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