Branches of Math
Recent Math Questions
lori recently rode her bike to her friend's house, 8 miles away. On her way back she rode 15mph faster than on her way there. She spent a total of 2 hours biking. What was her average speed each way?
Friday, October 17, 2014 at 12:45am
A woman owns stock in two companies, company A and company B. She owns 79 shares of stock in company A. Each share of stock in company A is worth $12. Each share of stock in company B is worth $19. Write three equations to represent the total number of shares of stock the ...
Thursday, October 16, 2014 at 10:21pm
Joelle works a part time at a grocery store to earn extra money to buy a furniture set that costs 1200 dollars She currently has 750 saved and wants to add 35 dollars each week from her paycheck Write an inequality that could be used to determine w the number of weeks she will...
Thursday, October 16, 2014 at 8:41pm
From a box containing 5 blue marbles,10 red marbles,and 8 yellow marbles,Lisa removed 3 marble,one of which was blue.f she removes one more marble at random,what is the probability that it will be blur? a. 1/4 b. 5/21 c. 1/5 d. 2/7 e. 1/6 please answer and explain
Thursday, October 16, 2014 at 8:38pm
Samantha wants to find the height of a pine tree on her yard.she measures the heigth of the mailbox at tree feet and it shadow at 4.8 feet. Then she measures the shadow of the tree at 56 feet . How tall is the tree?
Thursday, October 16, 2014 at 6:06pm
Joel works part time at a grocery store to earn extra money to buy a furniture set that costs 1200 She currently has 750 saved and wants to add 35 dollars each week from per paycheck Write an inequality that could be used to determine w the number of weeks she will have to ...
Thursday, October 16, 2014 at 5:55pm
Felix wants to get at least one hour of exercise each day Today he has run for 40 minutes. Write and solve an inequality that shows how much longer he needs to exercise to reach his goal x=hour x>40
Thursday, October 16, 2014 at 5:43pm
Susan has a balance of 110 dollars in her school lunch account and she spends 6 dollars per day for lunch. Her sister Evelyn has $83 in her account and she spends 4 dollar per day for lunch. Write and solve an inequality that shows in how many days will Susans lunch account ...
Thursday, October 16, 2014 at 5:42pm
AV needs to raise 700 dollars for their field trip. They have already raised 315 dollars by selling cookies in the Library. If there are 2 weeks (schol days only) to raise their remaining money how much money will need to be made daily
Thursday, October 16, 2014 at 5:38pm
Math algebra Help please
A right triangle has an area of 24 ft^2 the dimensions of the triangle are increased by a scale factor of 6 A.48ft^2 B.72ft^2 C.144ft^2 D.864ft^2
Thursday, October 16, 2014 at 5:14pm
General Math I
Hi Ms. Sue this is Shayna here. I am writing you this time, because I am very confused in a question of a test I just took this was the question Susan wants to buy a paddle boat for $840. She will pay 20% down and pay the rest in six monthly installments. What will be the ...
Thursday, October 16, 2014 at 4:21pm
there are some nickels and dimes in a jar. the number of nickels is one less than twice the number of dimes.if the total value of coins is 8 dollars and 55 cents, then find the numbers of dimes? explain?
Thursday, October 16, 2014 at 3:36pm
Of 320 consumers polled, some purchase Blu-ray movies, some only purchase movies on DVD, and some do both. If 300 people polled purchase Blu-ray discs and 280 purchase DVDs and Blu-ray discs, how many people only buy DVDs?
Thursday, October 16, 2014 at 12:59pm
Show the number of partitions of n in which only odd parts may be repeated equals the number of partitions of n in which no part appears more than three times
Thursday, October 16, 2014 at 12:07pm
Ralph bought 4 books for k dollars each. Iris bought 5 books for k dollars each. If together they spend 90 dollars, how much is each book? 4k+5k=90 so 9k=90 90/9=10 so $10 each
Thursday, October 16, 2014 at 8:41am
Rhonda bakes p pies. Mary bakes 3p pies. If together they bake 20 pies, how many pies does Mary bake?Rhonda bakes p pies. Mary bakes 3p pies. If together they bake 20 pies, how many pies does Mary bake? I would've thought p+3=20 so 20-3=17 making it p=17 but not sure that ...
Thursday, October 16, 2014 at 8:24am
1. Find the sum of the first five terms of the sequence 2/3, 2, 6, 18, ..... 2. Is this a geometric sequence? 2x, (4x-2), (6x-4), ..... 3. Show the equivalent values of the decimal 0.7575757575..... in fraction form. 4. What is the sum of the geometric sequence 4/3, 2/3, 1/3, ...
Thursday, October 16, 2014 at 5:25am
7th grade math
Not sure how to solve this: Suppose your school is selling magazine subscriptions. Each subscription cost $20. the company pays the school half of the total sales in dollars. The school must also pay a one-time fee of $18. What is the fewest number of subscriptions that can be...
Thursday, October 16, 2014 at 12:15am
4th grade math
mrs jacksin bought 6 gallons of juice for a party. each gallon has 16 cups. if 3 cups of juice were left over, how many cups did people drink at the party? Please help
Wednesday, October 15, 2014 at 11:28pm
The following electrochemical cell can be used to calculate the formation constant Kf for a metal and EDTA. The cell has a voltage of -0.262V. The right half cell contains a metal (M^2+) with a standard reduction potential of -0.236V. Calculate the Kf for the metal EDTA ...
Wednesday, October 15, 2014 at 11:15pm
A pair of blocks of the mass M =30.7 kg, and 2 M are dragged over a rough, horizontal surface by two constant forces of magnitude F=98.0 N. The angle α = 22.7 ° . The blocks are displaced 7.5 m, and the coefficient of kinetic friction is 0.258. *for the normal force ...
Wednesday, October 15, 2014 at 10:56pm
Data were recorded for the demand and revenue of a given product. Find the linear regression line which represents the revenue function. Find the quadratic regression curve which represents the revenue function. Data Demand x Revenue y 1 0 100 2 4 139.2 3 8 176.8 4 12 212.8 5 ...
Wednesday, October 15, 2014 at 9:55pm
True or false: as then number in the sample becomes larger and larger (assuming it means as the sample gets larger and larger), then the mean of the sampling distribution is equal to the population distribution for any normal population. Is it false? That it would be ...
Wednesday, October 15, 2014 at 9:53pm
the amount of simple interest earned in a savings account varies directly with the amount of money in the savings account with the amount of money in the account. A certain bank offers a 2% savings rate write a direct variation equation for the amount of interest, y earned on ...
Wednesday, October 15, 2014 at 8:39pm
A plane takes off from a local airport. It travels due north at a speed of 400km/h. The wind blows the plane due east at a speed of 50 km/h. How far is the plane from the airport after 1h. Give your answer to one decimal place
Wednesday, October 15, 2014 at 8:38pm
Martha is covering kitchen shelves with shelving paper. She has 6 shelves that are each 1 ¾ feet long. She buys 13 ¼ feet of shelving paper of the correct width. Which equation can be used to determine how much paper she will have left over? would that equation ...
Wednesday, October 15, 2014 at 8:33pm
Quick math help
I'm on the topic of "Algebra proofs". Is this statement an example of a transitive property?: If CD=AB and AB=8 then CD=8 Here's another problem I want you to check& note that I only have 4 blanks per side of the table (statements and reasons) Given: 2(x+3)=...
Wednesday, October 15, 2014 at 8:23pm
Does anyone know an easy way to remember the leading coefficient test for end behavior? I cannot seem to remember how to determine the direction the graph should go on these problems.
Wednesday, October 15, 2014 at 7:24pm
8th grade Math help
PLEASE HELP!!! Anita hikes 7 miles due east and then 3 miles due north. Rounded to the nearest mile, what is the shortest distance from the starting point to the ending point? A. 4 B. 6 C. 8 D. 10 I think it's B. am i right?
Wednesday, October 15, 2014 at 5:49pm
What are the steps to show the quotient in simplest form? Be sure to include various key words. 0.000027 divided by 0.000009 My answer 0.000027 divided by 0.000009=3 Definition of a quotient The answer after you divide one number by another. The qutient in this problem is 3. ...
Wednesday, October 15, 2014 at 4:14pm
1) What is the probability of winning the jackpot if you play the Florida Lotto? 2) What is the probability of winning the jackpot if you play Mega Millions? 3) What is the probability of winning the jackpot if you play Powerball? Tall versus Short All tall 787 tall 277 short...
Wednesday, October 15, 2014 at 4:05pm
A certain computer can perform 10^5 calculations per second. How many calculations can it perform ins 10 seconds? My answer: 10^5=100,000 Multiply by 10=10^6=1,000,000 Am I correct? Thank you
Wednesday, October 15, 2014 at 3:37pm
in a triangle the sum of the angle is 180degrees. if angle A is three times angle B and Angle C is 10 degrees more than twice Angle A. Find the measures of the three anges to the newarest degree
Wednesday, October 15, 2014 at 3:30pm
Leah is making chocolate chip cookies and the recipe calls for 3/4 cup of chocolate chips. If she wants to make 2/3 of the recipe what fraction of the chips will she need?
Wednesday, October 15, 2014 at 3:19pm
Two pilots take off from the same airport. Mason heads due south. Nancy heads 23º west of south. After 400 land miles, how far is Nancy from Masons route? Round your answer to the nearest tenth of a mile. (Enter only the number.)
Wednesday, October 15, 2014 at 3:08pm
Math (Ms. Sue! Someone help)
Hi I really need help. I don't know even how to figure these two questions out so if you could help me, please. Is (4, 10) a solution to the equation 10 5x = y? Explain your answer. Describe the pattern in the table using an equation. x|y 1|15 2|25 3|35 4|45 ...
Wednesday, October 15, 2014 at 2:25pm
There are two simultaneous games. One game is flipping a coin. Payment of tail is $2.50 and head is $1.50. And the other game is rolling a six sided die and paying number of dollars shown on the face of the die. Both the coin and the die are determined simultaneously and are ...
Wednesday, October 15, 2014 at 1:22pm