Monday
July 25, 2016

Homework Help: Math

Branches of Math

Recent Math Questions

Math
Find the exponential function that passes through (0,5) and (4, 1/2). Formula is y=Ce^kx
Sunday, May 15, 2016 by Erica

Math
Mr.Marshal spent his salary of $8400 in the following manner: Rental.........1/5 Food...........1/10 Bank...........1/4 Miscellaneous.....the remainder. Calculate the following: (A)what fraction of the money was spent on MISCELLANEOUS. (B)How much did he spent on rental. (C)if...
Sunday, May 15, 2016 by Josiah

math
Dina and Masha start out on a bike path 10 km long at the same time. When Dina reaches the end of the 10 km, Masha still has 2 km left to bike. If Dina’s biking speed is 5 km/h, find Masha’s biking speed.
Sunday, May 15, 2016 by elizabeth

Math
Farmer Jimmy harvested rep lines.He used 1/3 of this for himself and gave one-sister of the remainder to his brother.He sold the test.calculate: (A)how many limes he kept. (B)how many limes he gave his brother. (C)how many limes he sold.
Sunday, May 15, 2016 by Josiah

Math
Jerry spent 1/5 of his allowance on a book and 3/8 of the remainder of his allowance for a pen.jerry remained with $12.00.calculate: (A)jerry's allowance. (B)the cost of the book. (C)the cost of the pen.
Sunday, May 15, 2016 by Josiah

Math
Cesar's sixth- grade class sorted books in the library. The class sorted 45 books in 90 minutes. Write an equivalent ratio to find how long it would take to sort 120 books.
Sunday, May 15, 2016 by Milo

math NEED HELP
simplify 4^3 times 4^4 divided by 4^9 help please!!
Sunday, May 15, 2016 by casdean

math
An ancient Korean drinking game involves a 14-sided die. The players roll the die in turn and must submit to whatever humiliation is written on the up-face: something like "Keep still when tickled on face." Six of the 14 faces are squares. Let's call them A, B, C...
Sunday, May 15, 2016 by AnonYmous

Math
A child's. Dose for cefadroxil is 30mg/kg body weight once a day for 14 days.what is the smallest bottle that will provide. Enough medication to last 14 days. If child weighs 44 lbs.
Sunday, May 15, 2016 by Denise

math
I am currently dealing with the Richter scale and I have this formula 200=0.02*10^1.5*6.4/0.02*10^1.5*x I just cannot get x,plz help
Sunday, May 15, 2016 by Maya

Math
How 12in patio brick will fit a 13ft long 7ft wide space
Sunday, May 15, 2016 by Mark

Math
You start a search for a buried object by marking the center of a filed as (0,0), with coordinates giving distances in yards. Coordinates to the north or east are positive and coordinates to the south or west are negative. You find nothing at (-12,8), so you try a likely-...
Sunday, May 15, 2016 by Please Help

Math
What's nine minus three divided by a third plus one
Sunday, May 15, 2016 by Joe

math
You want to cover a trapezoidal box with paper. You have a sheet of paper that is 1m by 500cm. What is the size box that can be made with minimal wastage? plz plz plz help me with this.. i don't understand how to do this
Sunday, May 15, 2016 by Emily

math
Five workers are supposed to paste expiration date on each can.A,who paste 30% of the cans,fail to paste the expiration date once in every 300cans.B,who paste 15%,fail to paste the expiration date once in every 250cans.C,who paste 35% ,fail to paste the expiration date once in...
Sunday, May 15, 2016 by koro

math
If the angles of a quadrilateral are x,x+10,x+20 and x+30 degrees find the value of each
Sunday, May 15, 2016 by mary

Math
What the relationship that happens between the increase of the length of the side and area or perimeter
Sunday, May 15, 2016 by Sandy

Math Probability problem
Tony has 3 jackets and 2 shirts and 2 pants. He wants to wear three items every day. How many outfits he can choose of the same clues and/or of different clues
Sunday, May 15, 2016 by Lara

Math
Johnie has 3 Jackets (J1, J2 and J3) and 2 shirts (S1, S2) and 2 Trousers (T1, T2). He wants to wear 3 pieces of clothes daily. what should he choose if a) same clues or b) different clues
Sunday, May 15, 2016 by Lara

math
The company will use machine A,B,C,D with probabilities 0.23,0.45,0.19 and 0.13 respectively.From past experience it is known that the probability of defective tablet produced by the machine are 0.11,0.2,0.07 and 0.05 respectively.Suppose a defective tablet is produced:...
Sunday, May 15, 2016 by koro

math
I am a two digits number.my first number is equal to 7 and than 13. The second digit is number between 1 and 9 .what is the number
Sunday, May 15, 2016 by Anonymous

math
4.1 the diagram below shows part of the graph of f where f(X)--a cos bx. 4.1.1 determine the values of a and b
Sunday, May 15, 2016 by Fortunate

Math
Tap A can fill a tank in 8 minutes while tap B empties it in 9 minutes. How long will the tank be full if the two taps are opened at the same time?
Sunday, May 15, 2016 by Titus

math
A sample poll of 100 voters chosen at random from all voters in a given district indicated that 55% of them were in favor of a particular candidate.Find confidence limits for the proportion of all the voters in favor of this candidate. a.95% b.99.73%
Sunday, May 15, 2016 by Ras

Math
4x square plus x plus 9=0
Sunday, May 15, 2016 by Shreyansh

Math
Square is 20 feet wide and 21 feet long what is the disdence from one corner to the other
Sunday, May 15, 2016 by James

Math
(2p^q3)/5p0q/q5
Sunday, May 15, 2016 by Rathogwa makondelela

Math (Statistics)
12. Clancy, Rowling, Tolstoy Readability: Pages were randomly selected by the author J.K.Rowling, Leo Tolstoy, and Tom Clancy books. Use a 0.05 significance level to test the claim that the three samples are from populations with the same mean. Do the books appear to have ...
Sunday, May 15, 2016 by Lexi

Math (Statistics)
Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, identify the requirements that are not satisfied. 8. Male Color Blindness: When conducting research ...
Sunday, May 15, 2016 by Lexi

math
what is the surface area of a cube with side lengths that are 2/3?
Saturday, May 14, 2016 by mhysa

math
The variables x and y vary inversely. When y is 24, x is 8. What is y when x is 4?
Saturday, May 14, 2016 by Anonymous

math
there's a circle inside of a square like this: donlehmanjrcom/Tai%20Chi/Tai%20Chi%20New​sletters/excerpts11%20images/image001.pn​g (add the period before the com) the circle has a radius of 2 in and an area of 12.56 in^2 how do i find the area of the space ...
Saturday, May 14, 2016 by vic

Advance Math,Science
The solubility of sodium chloride is 35.4g of water at room temperature. What mass of sodium chloride can be dissolved in 1kg of water at room temperature?
Saturday, May 14, 2016 by Tabbie

Math
The student mr. Davis class either walk or ride the bus to school the number of students ride the bus is a tenant in the number of students who walk is 12 is there a 450 students in the school how many students total can you expect to ride the bus
Saturday, May 14, 2016 by Danny

Math
Solve this equation. (x)/(x-2) + (x-1)/(x+2) =-1
Saturday, May 14, 2016 by Booby bob

Math
The time t required to drive a certain distance varies inversely with the speed, r. If it takes 4 hours to drive the distance at 40 miles per hour, how long will it take to drive the same distance at 55 miles per hour? a. about 2.91 hours b. about 160.0 hours c. about 22.0 ...
Saturday, May 14, 2016 by jimmy mic dimmy

Math help.
What are the solutions to the systems? y=x^2+6x+7 y=-x+13 A. (-1,14) and (6,7) B. (-1,7) and (6,14) C. (-1,13) and (6,7) D. No solution I think its D.
Saturday, May 14, 2016 by Anonymous

Math
-x(7x-8) A. 6x^2-9x B. -7x-8x C. -7x^2+8x D. 7x+8x Is the answer B Thank you
Saturday, May 14, 2016 by Wallflower

math
A pizza shop offers the toppings shown below. How many different 3-topping pizzas can you make? pepperoni mushrooms sausage onion ham 6 10 ** 4 5
Saturday, May 14, 2016 by gabby

math
What are the solutions to the systems? y=x^2+6x+7 y=-x+13 A. (-1,14) and (6,7) B. (-1,7) and (6,14) C. (-1,13) and (6,7) D. No solution
Saturday, May 14, 2016 by Help me please.

Math
Nelly spends 25% of her free time surfing the Internet. If she spends approximately 1 hour per day surfing the Internet, how many hours of free time does she have each day?
Saturday, May 14, 2016 by Elisa

Math
Brent counted 10 red cards, 10 black cards, and 20 blue cards in a deck of cards. What is the ratio of red cards to the other cards?
Saturday, May 14, 2016 by Elisa

math
If 25 dimes were moved from Box A to box B there would be an equal number of dimes in both boxes. If 100 dimes were moved from Box B to Box A, the ratio of dimes in box A to box B would be 7:2. What was the original number of dimes in Box A?
Saturday, May 14, 2016 by kkkkkkkkkkkkkkkkk

Math
1. -x(5x-4) A.4x^2-5x B. -5x-4x C. 5x+4x D. -5x^2+4x 2. 5k^2(-6k^2-2k+6) A. -30k^3+3k^2+30k B. 30k^4-10k^3+11k^2 C.-k^4+3k^3+11k^2 D. -30k^4-10k^3+30k^2. My answers. 1.c 2. a Thank you
Saturday, May 14, 2016 by Wallflower

Math
6t^3x6t^3 A. 12t^3 B. 12t^6 C. 36t^6 D. 36t^6 Is the answer C? Thank you
Saturday, May 14, 2016 by Wallflower

math (PLZ HELP ASAP)
Paula, Dianna and Annie are three friends. Paula is twice as old as Dianna, and in 2 years she will be three times as old as Annie. If Dianna is 5 years older than Annie, how old is Paula? please use algebra to justify your answer.
Saturday, May 14, 2016 by Anonymous

math
a baker bakes bread and cake.he has 150 unit of A ,90 unit of B and 150 of C. One bread requires 1 unit of A ,1 unit of B and 2 unit of C. One cake requires 5 units of A, 2 unit of B and 1 unit of C. Find his maximum income if a bread sells for Tsh.350/= and cake sells for Tsh...
Saturday, May 14, 2016 by stembrige

Math
Find g(2) – f(2) Use f( x ) = 2x – 1 and g( x ) = x + 5
Saturday, May 14, 2016 by Anonymous

Math
f( x ) = 3x + 5 and g( x ) = -x + 9 Find: f( x ) – g( x )
Saturday, May 14, 2016 by Anonymous

Math calculation
A stock bottle contains 2.5 L of solution. How many 2 oz bottle can be filled using the stock solution?
Saturday, May 14, 2016 by Samantha

math (pLZ HELP ASAP)
The units’ digit of a two-digit number is 7 more than the tens’ digit. If 26 is added to the number, the result obtained is five times the sum of the digits. Find the number.
Saturday, May 14, 2016 by Anonymous

math
Anyone please help me! Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. (I ...
Saturday, May 14, 2016 by Anna

math (PLZ HELP ASAP)
The students asked their math teacher to tell them her age. She didn’t want to tell them, but she replied, “If you take two years from my present age the result will be three times my son’s age, and seven years ago my age was twice what his will be in two years...
Saturday, May 14, 2016 by Anonymous

math
You own two restaurants. From 1995 to 2000, the sales R1 (in thousands of dollars) for one restaurant can be modeled by: R1 = 480 – 8t – 0.8t2, t = 0, 1, 2, 3, 4, 5, where t = 0 represents 1995. During the same 6-year period, the sales R2 (in thousands of dollars) ...
Saturday, May 14, 2016 by Anonymous

math
In a box contain 4 green balls 4 white balls and 4 red balls .If 4 balls are drown randomly what is the probability that no one even out of the 4 balls being white.
Saturday, May 14, 2016 by Amit sahu

Functions Math
A car has 16 gallons of gasoline in its tank when it starts it's journey. On a long highway trip, gasoline is used at a rate of about 2 gallons per hour. The gallons of gas, "g", remaining in the car’s tank after "t" hours can be modeled by the ...
Saturday, May 14, 2016 by Anonymous

Math
There are 3000 bacteria in a day, if the number of bacteria double per 2 days , how many bacteria can we expect to have in 15 days?? My result was 44,999.99 which if rounded is 45,000,am i accurate? ?
Saturday, May 14, 2016 by Kiara

6th grade math
A single, standard number cube is tossed. What is the probability of getting a number greater than 3? A. 2/3 B. 1/3 C. 1/6 D. 1/2 I think that it's D because a standard number cube has 6 numbers, and if we could get a number greater than 3, three is half of 6? So 1/2?
Saturday, May 14, 2016 by Lily L.

Math
Determin x if f(g(x))=0 for the following f(x) = 3x-2 g(x) =5x+5
Saturday, May 14, 2016 by Isaac

math
Can you help me? For the problem .6 is 266 2/3% of what number? would I change 266 2/3% to a decimal and put it over 100?
Saturday, May 14, 2016 by Jack

math
by what approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude5.3?
Saturday, May 14, 2016 by austin

math
500bottles contains 10 bottles that are defective.3bottles are selected,random,without replacement.a)what is the probability that the third one selected is defective given that the first was okay and second one selected was defective?b)what is the probability that the first ...
Saturday, May 14, 2016 by koro

math (Please help me out)
An insurance company is reviewing its current policy rates.when originally setting the rates they believed that the average claim amount was 1800.00.they are concerned that the true mean is actually higher than this,because they could potentially lose a lot of money.they ...
Saturday, May 14, 2016 by Ras

math
A body is thrown vertically upwards having the velocity of 10m/s. It's velocity when it touches the ground is
Saturday, May 14, 2016 by piyush singh

Math
Two questions: 1) Ryan's class drove for 350 miles in 6 hours and 20 minutes, what was their speed? 2) Starting point to destination is 500 miles; 9 inches on a map. If a driver stops 4 inches from starting point, how far are they from destination in miles? Thanks in ...
Friday, May 13, 2016 by Allyson

Math
Mike and fred are at a conference and have been broken into a group with 10 others people. There is 2 tables that are circular, where one seats 7 and the orher has exactly enough to set the rest. How many different ways can the group be seated if mike and fred must sit ...
Friday, May 13, 2016 by Buck

math
there are 28 students in a class. 16 of them are boys. What is the percentage of girls in the class?
Friday, May 13, 2016 by Anonymous

math
number cube is tossed. what is the probability of getting a 4 or 5
Friday, May 13, 2016 by June 7

Math
It takes 8 men to build a fence in 9 days so how long it would take 3 men to build the same fence?
Friday, May 13, 2016 by Francilia

math
which of the following is true about the metal boxes pictured below
Friday, May 13, 2016 by ikcss

6th grade math
A company finds 5 defective toys in a sample of 600. Predict how many defective toys are in a shipment of 24,000. A. 40 B. 166 C. 200 D. 20
Friday, May 13, 2016 by Lily Longoria

6th grade math
You roll a number cube 20 times. The number 4 is rolled 8 times. What is the experimental probability of rolling a 4? A. 40% B. 25% C. 20% D. 17% How do I work this problem out? Please explain. Thank you.
Friday, May 13, 2016 by Lily Longoria

math
A standard size of a certain bin holds 2 2/3 gallons . The larger size of that bin is 1 1/4 times larger. How many gallons does the large bin hold ?
Friday, May 13, 2016 by sai

math
a board was 24 3/8 inches long. A worker cut it into pieces that were 4 7/8 inches long. The worker cut the board into how many pieces?
Friday, May 13, 2016 by sai

Math
a car uses 3 1/8 gallons of gasoline per hour when driving on the highway . how many gallons will it use after 4 2/3 hours?
Friday, May 13, 2016 by sai

math
david worked 7 1/3 hours today and planted 11 trees. It takes him about the same amount of time to plant each tree. How long did it take him to plant each tree? It took him _____hour to plant each tree.
Friday, May 13, 2016 by sai

Math
Pouring gravel in a cone shaped pile 6 feet high Suri a diameter at the base of 8.2 feet how much gravel in poured??
Friday, May 13, 2016 by Lisa

Math Statistics
26. Flight Data: Use the times required to taxi out for takeoff. For American Airlines, how is it helpful to find the mean? Taxi Out: 30 19 12 19 18 22 37 13 14 15 31 15 16 14 15 27 19 22 22 23 16 13 16 18 15 12 19 18 21 20 13 15 43 18 17 19 13 20 12 17 35 19 22 43 49 45 13 23
Friday, May 13, 2016 by Lexus

PLZ HELP ASAP math
Paula, Dianna and Annie are three friends. Paula is twice as old as Dianna, and in 2 years she will be three times as old as Annie. If Dianna is 5 years older than Annie, how old is Paula?
Friday, May 13, 2016 by Anonymous

6th grade math - Ms. Sue please check.
You write each letter of the word MATHEMATICIAN on a piece of paper and put them in a bag. You randomly select one piece from the bag. What is P(T or A)? A. 5/13* B. 5/8 C. 1/3 D. 8/13 You have 3 pairs of white socks, 4 pairs of black socks, and 2 pairs of colored socks in ...
Friday, May 13, 2016 by Lily Longoria

Math
1. Which of the following is an example of a dependent event? (1 point) flipping two coins rolling a number cube and spinning a spinner choosing two scoops of ice cream choosing a cookie at random, eating it, and then choosing another at random** 2. Which of the following is ...
Friday, May 13, 2016 by Anonymous

Math
Mike and fred are at a conference and have been broken into a group with 10 others people. There is 2 tables that are circular, where one seats 7 and the orher has exactly enough to set the rest. How many different ways can the group be seated if mike and fred must sit together??
Friday, May 13, 2016 by Hue

Math
Given the digits 1,2,5,7,8,9,0 and if repetition are not allowed, answer each of the following: A) how many 3 digit numbers canbve formed that are divisible by 5? •i got 6x6x1 B) how many numbers would be less then 800(must be 3 digit and divisible by 5)?
Friday, May 13, 2016 by Sherri

6th grade math quiz
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-red, H-blue, H-green, H-yellow, T-yellow, T-green, T-blue, T-red B. H-red, T-red, H- blue, T-blue, H-...
Friday, May 13, 2016 by Lily Longoria

6th grade math
You have 3 pairs of white socks, 4 pairs of black socks, and 2 pairs of colored socks in your drawer. What is the probability that you reach into the drawer and randomly select a pair of white socks? A. 1/2 B. 1/3 C. 2/3 D. 3/7 I am stumped, please explain?
Friday, May 13, 2016 by Lily Longoria

6th grade math - Ms. Sue please check!
How many different lunch combinations can be made from two sandwich choices, three item choices, and three beverage choices if you choose one sandwich, one side, and one beverage? A. 8 B. 9 C. 18* D. 11
Friday, May 13, 2016 by Lily Longoria

Math
If the width of a window is (x+7) inches and the length is (x+9) inches, then give the expression which represents the area of the window use the formula area=base.Height. if ×=8 inches, find the area of the window using the expression you found in part a
Friday, May 13, 2016 by Jared

Math
What are equal intervals? I have a math question that deals with them but I don't what they are.
Friday, May 13, 2016 by Anonymous

math
The ordered pairs (2 -17) and (5 -35) are solutions to which of the following equations? y=-6x+5 y=6x-5 y=6x+5 y=-6x-5
Friday, May 13, 2016 by doglover

math
show 3/8,3/4,1/4,2/4,and 5/8 from least to greatest
Friday, May 13, 2016 by pj

math
I feel dumb for not knowing how to do this, but how would these numbers be converted into cents? $.003253 per kWh. $0.00825 decrease per kilowatt hour
Friday, May 13, 2016 by Tessa

math
Video Villa rents classic video games for $2.50 for 5 days. New games rent for $3.50 for 5 days. If Rob rents c classic games and n new games, what is his cost per day, in dollars, for renting the games for 5 days? Select one: a. 0.50c+0.70n b. 0.50c+0.75n c. 0.25c+0.35n d. 0....
Friday, May 13, 2016 by Claire

BIO PLEASE HELP!
Identify the Protist and explain why you think it is what you said. We took dead leaves from outside, put them in boiling water then looked at them a week later. Link to image below! LINK: postimg. org/image/gu1201se9/ Ive attempted to look everywhere but i can't find a ...
Friday, May 13, 2016 by Jen

Math
A researcher tagged 40 giant turtles in 2008. In 2009 she returned and captured 50 turtles, 16 of which were tagged. in 2010 she returned again and captured 30 turtles 8 of which were tagged. a: Use a proportion to estimate the turtle population for 2009 b: Use a proportion to...
Friday, May 13, 2016 by Lily

Math
Divide (x^2+2x+ over x^2-8x+16) over(x+1 over x^2-16) A. (x-1) (x+4)over x+1 B.(x+1)(x+4)over (x-4) C. (x+1)(x+4)over (x-1) D.(x-1)(x-4)over (x+4)
Friday, May 13, 2016 by Anonymous

Math
A researcher tagged 40 giant turtles in 2008. In 2009 she returned and captured 50 turtles, 16 of which were tagged. in 2010 she returned again and captured 30 turtles 8 of which were tagged. a: Use a proportion to estimate the turtle population for 2009 b: Use a proportion ...
Friday, May 13, 2016 by Lol:3

Math
Find the first 4 terms in the expansion of ((3x^4)-(2/y^5))^9
Friday, May 13, 2016 by Justin

math
1. add or subtract {4x^2+15x-3}-(3x^2+5) a.7x^2+15x-8** b.x^2+12x+2 c.x^2+15x-8 d.7x^2+8 2. Simplify the polynomial -3f^2+4f-3+8f^2+7f+1 a.5f^2-11f+2 b.11f^2+11f+2** c.5f^2+11f-2 d.-5f^2+11-2 3. Add or subtract (2x^2+6x+1)+(-7x^2+2x-3) a.5x^2-4x-2 b.-5x^2+8x-2 c.5x^2-8x+2** d...
Friday, May 13, 2016 by please help

Math
There are 12 students to be seated in a row of 12 chairs. Paul and Martha have broken up and will not sit together. How many different seating arrangements are possible?
Friday, May 13, 2016 by John

Math
If x>0 and 2x^2+3x-2=0 what is the value of x?
Friday, May 13, 2016 by Josh

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