Tuesday

October 13, 2015
**Math **

A plane flys 230 km due north. The wind is blowing west at 85 km. what direction is the plane flying. Calculate the actual speed of the plane. What is the hearing from North?
*Monday, September 14, 2015 by Georgia *

**Math**

Carletta has 23000 dollars to invest. As her financial consultant, you recommend that she invest in Treasury Bills that yield 7%, Treasury Bonds that yield 8%, and corporate bonds that yield 9%. Carletta wants to have an annual income of 1800 dollars, and the amount invested ...
*Monday, September 14, 2015 by julie*

**math**

In 2012, third baseman Miguel Cabrera of the Detroit Tigers baseball team had 205 hits in 622 times at bat. What is Miguel’s batting average?
*Monday, September 14, 2015 by curly*

**Math**

Suppose that a wind is blowing in the direction S45°E at a speed of 50 km/h. A pilot is steering a plane in the direction N60°E at an airspeed (speed in still air) of 150 km/h. The true course, or track, of the plane is the direction of the resultant of the velocity ...
*Monday, September 14, 2015 by Matthew*

**math**

A recipe good for 4 servings requires 1/8 tsp. of black pepper and 1/2 tsp/ of salt. how much pepper and how much salt needed for 2 servings?
*Sunday, September 13, 2015 by jm*

**MATH**

GIVE ME AN EXAMPLE OF A MULTI-STEP NUMBER SENTENCE THAT INCLUDES EXPONENTS (THAT WOULD INVOLVE ORDER OF OPERATIONS AND INCLUDE AT LEAST THREE NUMBERS).
*Sunday, September 13, 2015 by KIM*

**math**

1.4 divided by 36.96
*Sunday, September 13, 2015 by John *

**Math**

If a - 1/a = 2 then show that ( a + 1/a )^2 = 8
*Sunday, September 13, 2015 by Noor*

**math/science**

If 0 is t when the year is 1982, what would be the value of t in 1990? How many years is that? From 1982 to 1992 the cost of the manufacturing a PC has decreased by about the same percentage each year. The cost, C (in dollars), in year t can be modeled by C = 3440 * (3/4)^t &#...
*Sunday, September 13, 2015 by .*

**Math**

A nutritional formula calls for 500 g of dextrose in a total volume of 2000 ml. how many milliliters of a 70% w/v dextrose injection are needed to provide the required amount of dextrose? This seems to be a dimensional analysis problem. We have: 500g/2000ml 70% w/v = 70 g ...
*Sunday, September 13, 2015 by James*

**math**

a bank loaned out 60000, part of it at the rate 14% per year and the rest at a rate of 8% per year. if the interest received was 6780, how much was loaned at 14%?
*Sunday, September 13, 2015 by cindy*

**4th grade math word problem**

tim is 27 years older than tom. the sum of their ages is 337. how old is ti,?
*Sunday, September 13, 2015 by Zach*

**math**

if a ladder 15 meters long is placed so as to reach the bottom of a window 10 meters high, what distance on the ground does the ladder adjusted if it is placed on the top of a two meter square window and what is the new angle of elevation of the top of the window with respect ...
*Sunday, September 13, 2015 by M*

**math help**

-1 3/4 3/4 < > = I think it's B
*Sunday, September 13, 2015 by School*

**math**

how can you find what each mark represents on a number line?
*Sunday, September 13, 2015 by Michelle*

**math/science**

The total surface area of Earth is about 1.97 × 10^8 square miles. The surface area of land on Earth is about 5.73 × 10^7 square miles. Find the ratio of surface area of land to that of the entire planet.
*Sunday, September 13, 2015 by .*

**Math**

-1/2 divided _____________= -7/3 how do I get the number that equals -7/3
*Sunday, September 13, 2015 by Gail*

**math**

the ratio of gas to ethanol is 17 to 3, how much ethanol is in 600 gallons of mixture
*Sunday, September 13, 2015 by Noah*

**Neuroscience**

I'm struggling with the following question: The opening of chloride selective channels by a neurotransmitter X will drive membrane potential toward the chloride equilibrium potential. Assume that early during cell development, Cl is pumped into the cell for a concentration...
*Sunday, September 13, 2015 by John*

**Math**

The temperature at noon is 75 degreesF. The temperature drops 3 degrees every half hour. What is the temperature at 4.pm. I'm studying Multiplying Rational numbers and I don't know how to set this up.
*Sunday, September 13, 2015 by Gail*

**math**

how much cesium-137 would remain after 120.0 years if you started with 34.0 grams
*Sunday, September 13, 2015 by tanella*

**math**

what does scale mean
*Sunday, September 13, 2015 by Anonymous*

**Math (Trigonometry) **

Zola can see the top of 180m cell phone at an angle of elevation of 32 degrees, and Naeem can see it an angle of elevation of 50 degrees. How far apart are Zola and Naeem if they are on a straight line with the tower? There are two possibilities.
*Sunday, September 13, 2015 by Luisa*

**math**

Greg is at his house.He gets in his car and drives north 9.6 miles and stops at the store.Then he turns around and drives south 8.4 miles to go to his friend's house.How far is the friend's house from Greg's house?
*Sunday, September 13, 2015 by Jennifer*

**Math**

At present, the sum of the ages of a father and his son is 33 years. Determine the smallest number of years until the father's age is 4 times the son's age.
*Sunday, September 13, 2015 by Student*

**Math**

When the tap is turned on, a sink will fill at a uniform rate in 60 seconds. If the plug is removed, the sink will empty at a uniform rate in 80 seconds. How long will it take to fill the empty sink with the tap on and plug removed?
*Sunday, September 13, 2015 by Anon*

**math - age problem**

3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18?
*Sunday, September 13, 2015 by andrea*

**math**

If there are two farmers who have grown grass in the circular field then what should be length of rope so that equal crop is distributed to both if rope is tied at the center of the circular field if r is radius of the circle
*Sunday, September 13, 2015 by pooja*

**math**

Please help! (X+y)^3+(x-y)^3
*Sunday, September 13, 2015 by agnes*

**Math- Algebra**

A 600 meters long train travels through a 4200 meter tunnel. Two full minutes elapsed from time the front of the train enters the tunnel until the last wagon exits the tunnel. What is the speed, in meters per second, of the train?
*Sunday, September 13, 2015 by Austin M.*

**Intermediate math**

I have to factor these two problems but am having some difficulties X^3y^6-64 & (x+y)^3+(x-y)^3
*Sunday, September 13, 2015 by April *

**math**

1.) 3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18? 2.) Willie bought a jacket for 26.86 pesos. The jacket’s price had been ...
*Sunday, September 13, 2015 by andrea*

**Math **

A plane flys 230 km due north. The wind is blowing west at 85 km. what direction is the plane flying. Calculate the actual speed of the plane. What is the hearing from North?
*Sunday, September 13, 2015 by Georgia *

**math**

A rectangular cake measuring 120 cm by 72 cm is to be divided into square pieces of the same size and the largest size possible.What will be the measure of the side of each square and how many pieces will there be?
*Sunday, September 13, 2015 by regieco batarra*

**Math: Geometric Progression**

Three numbers are in G.P. whose sum is 70. if the extremes be each multiplied by 4 and the means by 5, they will be in AP. find the numbers .
*Sunday, September 13, 2015 by Aman*

**Math**

If a - 1/a = 2 then show that ( a + 1/a )^2 = 8
*Sunday, September 13, 2015 by Noor*

**math**

Jenny gets a salary increment of 20%. She gives 1 5 of her new salary to her mother and spends another 40%. If she has RM600 left,what is her original salary?
*Saturday, September 12, 2015 by ayu*

**math ( having difficulty)**

Superior has provided the following information for its recent year of operation: The common stock account balance at the beginning of the year was $18,000 and the year-end balance was $19,000. The additional paid-in capital account balance increased $4,300 during the year. ...
*Saturday, September 12, 2015 by samantha*

**math (please help)**

A company's retained earnings increased $375,000 last year and its assets increased $973,000. The company declared a $79,000 cash dividend during the year. What was last year's net income?
*Saturday, September 12, 2015 by samantha*

**Math**

An ordinary plane leaves an airport and flies due west at 180kph. Two hours later a jet leaves the same airport and flies due west at 900kph. How far from the airport will the jet overtake the ordinary plane?
*Saturday, September 12, 2015 by Sammy*

**Math**

Four members of a club decide to buy shares in a company. They will divide the cost equally. Two new members join the club and agree to contribute to the shares. Their contribution results in a savings of $200 for each of the original four members. How much do the shares cost?
*Saturday, September 12, 2015 by Anonymous*

**math**

lim x-->-9 x^2+10x+9 / x-9
*Saturday, September 12, 2015 by Ernie*

**Math 9th Grade**

Write an expression for the distance a car travels in t hours at a speed of s km/h
*Saturday, September 12, 2015 by Alex*

**math**

If your 4ft from the mirror;the mirror is 15ft.from the wall and your eyes are 6ft from the floor,what is the height of the wall?
*Saturday, September 12, 2015 by Vernon *

**Math Pre Algebra**

evaluate 5(14-2^3)+ 8/2 =
*Saturday, September 12, 2015 by Tay*

**Math**

If a - 1/a = 2 then show that ( a + 1/a )^2 = 8
*Saturday, September 12, 2015 by Noor*

**math**

Gabriella has between 2 and 3 hours to spend on Math, Sociology, and English homework. She plans to spend equal amounts of time studying Sociology and English, and to spend 2 times as much time studying Math as in studying Sociology.
*Saturday, September 12, 2015 by devindra*

**Math**

The Snack Shack is making a batch of trail mix. They use 9 1/3 pounds of granola, 9 1/3 pounds of mixed nuts, and 9 1/3 pounds of yogurt raisins to make a trail mix. They divide the mixture into 14 packages. How much is in each package? Explain.
*Saturday, September 12, 2015 by Horrid at math *

**math**

The number of my hundreds plus the number of y thousands is 3.the number of my tens is 7 times the number of my hundreds.the number of my ones in 3 times the number of my thousands.all my digits are different.What number am i?
*Saturday, September 12, 2015 by maria*

**math**

Austin is creating a ;new trail mix by combining two of his ;bestselling blends.  A pineapplecoconutmacadamia ;(pcm) mix that ...
*Saturday, September 12, 2015 by sarah*

**osizweni**

Math,busi age is three time the age if vusi.in six years time their combine age is 18 .what are their ages now
*Saturday, September 12, 2015 by mphile*

**math**

2/5c+4-1/5 equals -4
*Saturday, September 12, 2015 by tomeisha*

**discrete math**

4m+5n^2=20 (proof by cares)
*Saturday, September 12, 2015 by ben*

**Math **

5 sin theta +12 cos theta = 13. Prove 5 cos theta - 12 sin theta =0.
*Saturday, September 12, 2015 by Priya *

**math egd;science;algebra**

Identify environment issues cause illhealth
*Saturday, September 12, 2015 by khulekani*

**math**

2/5*-3/7-1/6*3/2+1/14*2/5
*Saturday, September 12, 2015 by karthik*

**Math**

An individual federal tax return form asks, among other things, for the following information: income (in dollars and cents), number of dependents, whether filing singly or jointly with a spouse, whether or not deductions are itemized, amount paid in local taxes. Describe the ...
*Saturday, September 12, 2015 by Lucas*

**Math**

The volume of water in a container is x(2x²+x+5)cm³ when the depth is Xcm water is added at the rate of 60cm³5¯¹ when the depth is 5cm,at what rate is the level rising.
*Saturday, September 12, 2015 by Hardney David Smith *

**Math**

How many ways can you set up a committee of 4 people from 10 people?
*Saturday, September 12, 2015 by Mubarak*

**math**

How many ways are there to roll out a 3 question True or False?
*Saturday, September 12, 2015 by kenny*

**math**

1 mulliken = 10 inches 11 9/10 inches = how many mullikens? 5 13/16 inches = how many mullikens?
*Saturday, September 12, 2015 by A*

**Math**

Write each number is scientific notation. 291.7 0.0960 is it 2.917 x 10^ 3 and 9.60 x 10^-2? help!! thanks!!
*Friday, September 11, 2015 by Susan*

**math**

maggie has a 27 feet long ribbon what's the length of the ribbon in yards
*Friday, September 11, 2015 by Janice*

**math**

259.689 the 9 in the ones place _____ the value of 9 in the thousandths place
*Friday, September 11, 2015 by terrell*

**math**

Diane Van Os decided to buy a new car since her credit union was offering such low interest rates. She borrowed $32,000 at 3.5% on December 26, 2012, and paid it off February 21, 2014. How much did she pay in interest?(Assume ordinary interest.)
*Friday, September 11, 2015 by Evelyn*

**Math**

A rope is 60 in. in length and must be cut into two pieces. If one piece must be five times as long as the other, find the length of each piece. Is one part of the rope 5in?
*Friday, September 11, 2015 by Lauren*

**Math**

Find a negative and a positive coterminal angle for Ө = 2pi/3. -4pi/3 and 8pi/3
*Friday, September 11, 2015 by Anonymous*

**math**

Is one centiliter greater than one kiloliter?
*Friday, September 11, 2015 by Fayth*

**math**

Find the greatest number of three digits that can be exactly divided by 75,45 and 60
*Friday, September 11, 2015 by Ravi*

**math**

Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =
*Friday, September 11, 2015 by lizbeth*

**Math**

The displacement from equilibrium of an oscillating weight suspended by a spring is given by y(t) = 2 cos 6t, where y is the displacement in centimeters and t is the time in seconds. Find the displacement when t = 1.45, and round your answer to four decimal places if necessary...
*Friday, September 11, 2015 by Anonymous*

**Math**

In your own words like the rules for multiply in your own words like the rules for multiplying integers then write the rules for dividing integers
*Friday, September 11, 2015 by Anonymous *

**math**

Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =
*Friday, September 11, 2015 by jake*

**math**

Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =
*Friday, September 11, 2015 by jake*

**math**

3-xsquare<=g(x)<=3secx for all x find lim xtends to0g(x)
*Friday, September 11, 2015 by omendra*

**math**

3-xsquare<=g(x)<=3secx for all x find lim xtends to0g(x)
*Friday, September 11, 2015 by omendra*

**math Help**

Multiplying and Dividing Fractions Carol is baking cookies and needs two and one-fourthcups of flour, two-thirdscup of white sugar, one-fourthcup of brown sugar, andone -sixteenth cup of baking soda. Use this information to answer the following questions. 1 Divide the amount ...
*Friday, September 11, 2015 by gavin*

**math**

an electric pole is 24 meter high casts a shadow of 20 meter long.find the height of the tree if it castes a shadow of 15 meter long under similar conditions. [explain and make the table if direct or inverse variation]
*Friday, September 11, 2015 by yashlion*

**Math**

Denise took a total of 80 calls on her shift at work today. Of those 80 calls, 55% were resolved, 15% escalated to a supervisor, and 10% required that a technician be sent out to the customer's house. What is the total number of calls that Denise resolved on her shift today?
*Friday, September 11, 2015 by shirell*

**math**

an electric pole is 24 meter high casts a shadow of 20 meter long.find the height of the tree if it castes a shadow of 15 meter long under similar conditions
*Friday, September 11, 2015 by yashlion*

**Math Help!**

You have $60.00 in your wallet and want to buy some new CDs. If the CDs are $11.00 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer
*Friday, September 11, 2015 by Amber*

**math **

Product A is a 12-ounce bottle of generic popcorn oil that sells for $1.39. Product B is a 24-ounce popcorn oil bottle that costs $2.79. Which is the better buy?
*Friday, September 11, 2015 by amanda*

**Math**

Romain,fabien,lise,jen and adrien stand in a single row.romain is after lise.fabien is before romain and just after jennifer.jennifer is before lise but she is not d first.where iS adrien?
*Friday, September 11, 2015 by John*

**Math**

How many digits are needed to write down all from 1-100?
*Friday, September 11, 2015 by John*

**math**

The number of digits used to write all the page in a book is 35. How many pages has the book?
*Friday, September 11, 2015 by John*

**math**

Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths
*Friday, September 11, 2015 by John scott*

**Math**

14 2 7 3 9=10 insert symbols to make it work 9*2 11 8 4 1=60
*Friday, September 11, 2015 by Lina*

**Math**

Solve this radical equation algebraically: 2x-5(sqrtx)-3=0
*Friday, September 11, 2015 by Bob*

**math**

Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths
*Friday, September 11, 2015 by John scott*

**Giyani high, math**

The dimensions of a rectangular swimming pool are 10m by 6m, customers want the pool built 1/4 of the length and a third of its width wider. What are the new dimensions of the pool, calculate the area
*Thursday, September 10, 2015 by Naledi*

**math**

Find the integer between square root of 30 and 4 pi over 3
*Thursday, September 10, 2015 by Ashantae*

**Math**

Hello I am mother trying to explain to my 13 year-old daughter the result of this equation: 7x^2+7y-4x^2-4y equals to 3x^2-3y I just want to know that I am right since my daughter insists that that was not what the teacher had on the board she got 34y which I told her it is no...
*Thursday, September 10, 2015 by Anonymous*

**Math**

Yvonne owes her sister $25. Michael's checking account balance is -$20. Write an inequality to compare the amounts. Explain the meaning of the inequality.
*Thursday, September 10, 2015 by Jiggz*

**math**

Find the smallest positive integer n for which 126n cube root is a whole number
*Thursday, September 10, 2015 by Ethan*

**Math**

A car is traveling at 30 mi/hour. What's the cars speed in feet per second?
*Thursday, September 10, 2015 by Janey*

**Math**

The displacement from equilibrium of an oscillating weight suspended by a spring is given by y(t) = 2 cos 6t, where y is the displacement in centimeters and t is the time in seconds. Find the displacement when t = 1.45, and round your answer to four decimal places if necessary...
*Thursday, September 10, 2015 by Anonymous*

**math**

An investment of $1400 earns $80 each year how much must be invested to earn $120 year? $1400/$80=$m/$120 did I set this up correctly? Thank You
*Thursday, September 10, 2015 by jill*

**math**

if the temperature was 18 degrees at noon and it dropped 13 degrees every 5 hours what would be the temperature at 5:00
*Thursday, September 10, 2015 by tavia*

**Math**

(Z-3^2)=(52×4)+(20×26.5)-8
*Thursday, September 10, 2015 by Anonymous*

**math**

you have the numbers from 1 through 9. divide them into 3 groups so that each group has the same total after adding the digits in them.. i got until: adding all the digits makes 45 and and divided by 3 so each will be 15, but what next? any method for that or do it by trial ...
*Thursday, September 10, 2015 by edina*