Thursday

May 5, 2016
**Math**

Find how many numbers bigger than 2,999 and less than 8,999 can be formed from the odd digits, if no digits can be repeated.
*Monday, April 11, 2016 by anon*

**7th Grade Science**

Hi, I really need help with this. I'm asked to write a paragraph about this. I just need some help working it out so I can get everything correct. I'm not cheating its just confusing this part of the assignment for me. So please help! I also have to study for Math ...
*Monday, April 11, 2016 by Music Lover 14*

**math**

How many “words” can be formed using the letters of the word ARRANGEMENT?
*Monday, April 11, 2016 by tess*

**math**

The student to teacher ratio is 19:1 at a local school and there is a total of 500 students and teachers. How many teachers and how many students are there. I'm not sure how to begin to set this up since I have two unknowns and not only one.
*Monday, April 11, 2016 by Julie*

**Math**

If pasta sells for $3.55 for a 20-ounce box a. What is the price per ounce? Round to the nearest cent. $3.55/20 = $.18 per ounce b. How many ounces do you get per dollar? Round to the nearest tenth of an ounce. I'm not sure how to solve this answer. Thank you.
*Monday, April 11, 2016 by Julie*

**Math**

Transform arctan x + arctan y = pi/4 into algebraic expression A) x+xy-y = 1 B) x-xy-y = 1 C) x+xy+y = 1 D) x-xy+y = 1 Plsss help
*Monday, April 11, 2016 by Dangdang*

**math,economics,geography and life science **

what courses can i apply for with the following subjects Math Geography Economics Life science
*Monday, April 11, 2016 by kgaogelo*

**Math HELP PLEASE QUICK!**

A radio signal travels at 3 x 10^8 meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 3.54 x 10^7?
*Monday, April 11, 2016 by Sydney*

**Math**

What is the smallest fraction you can write using the digits 2, 3, and 4. Is it twenty three fourths?
*Monday, April 11, 2016 by Jacey*

**math!!! help**

if 2x^2-(b-4)x-4(b+2)=0 has equal root then.the value of b?
*Monday, April 11, 2016 by philip!!!*

**Math**

Please help ! 1.)a catapult launches a boulder with an upward velocity of 122 feet per second. the height of the boulder, h, in feet after t seconds is givin by the function h(t)=-16t^2+122t+10. what is the boulders maximum height ? and how long does it take the boulder to ...
*Monday, April 11, 2016 by Hannah*

**math !**

using the following set of data, calculate the lower quartile, the upper quartile, and the interquartile range.20, 22, 25, 28, 29, 30, 32, 33, 34 ? NEED HELP !
*Monday, April 11, 2016 by JacqueesWifee*

**physics**

A spring has an unstretched length of 10 cm . It exerts a restoring force F when stretched to a length of 12 cm . For what total stretched length of the spring is its restoring force 3F? At what compressed length is the restoring force 2F? I keep doing this but I do not think ...
*Monday, April 11, 2016 by jessica*

**Math**

A man buys a book for P200 and wishes to sell it. What price should he mark on it if he wishes a 40 percent discount while making a 50 percent profit on the cost price? A) 667 B) 567 C) 467 D) 867 But my answer is 300. Plss help.
*Monday, April 11, 2016 by Anonymous*

**Math**

A certain ball, when dropped from a height rebounds to one half of the original height.Suppose thos ball is dropped from a point 8ft above the ground, how far has it traveled, counting up and down distance only, when it hits the ground for the eight time?
*Monday, April 11, 2016 by Anonymous*

**math**

I am thinking of two numbers.What will my number be if their sum is 5 and their product is 6?
*Monday, April 11, 2016 by Keena*

**Math **

A plane flies 430 miles at a bearing of S27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting?
*Monday, April 11, 2016 by Nicole *

**Vectors, Math**

A is (3, 2) and point B is 4 units from A in the direction (1,-1) Find AB(arrow). Find the coordinates of B. I can't do this question, Ive attempted it many times.
*Monday, April 11, 2016 by William*

**math**

the diagonal of a rectangle with side A,B(B>A)makes an angle 60 degree with one of its sides.the ratio of the volumes of the cylinders generated by revolving the rectangle about each of the adjacent sides is
*Monday, April 11, 2016 by shaheb*

**math **

Steve runs a kennel and purchases dog food from a U.S supplier. The supplier sells 25 lb bags for $28.95 U.S Each dog eats about 3.5kg/week and Steve boards an average of 16 dogs per day. How many bags of dog food will he need for 3 months? The answer is 64 bags but I keep ...
*Sunday, April 10, 2016 by yvonne*

**Math geometry **

A rectangle is 146cm long. A diagonal makes an angle of 50° with the width. How wide is the rectangle?
*Sunday, April 10, 2016 by Jasnoor sidhu *

**Math**

What is the ratio in fraction form for 9 pints to 2 quarts
*Sunday, April 10, 2016 by Joseph *

**Math**

A farmer has enough seeds to grow 200 crops of wheat and 300 crops of oats in one season. However, his water supply is limited to growing only 250 crops. Find a system of inequalities that describes the possibilities for his farming.
*Sunday, April 10, 2016 by Anonymous*

**math**

15=2^x
*Sunday, April 10, 2016 by amire*

**Math: Trigonometry**

Find the sum of the three smallest positive values of x such that 4cos^2(2x-pi) = 3. (Answer in radians.)
*Sunday, April 10, 2016 by Katie*

**math**

Robert must read a few books from his home library. He read 4 out of 6 books from the top shelf, then 2 out of 3 books from the middle shelf and then 3 out of 6 books from the bottom shelf. In how many ways can Robert read the books, if different orders in which the books will...
*Sunday, April 10, 2016 by yaz*

**math**

A worm is 130 millimeters long. How many centimeters long is the worm?
*Sunday, April 10, 2016 by Sereniti*

**Math**

how do the surface areas of the five prisms (triangular, square, pentagonal, hexagonal, and octagonal) compare as the number of faces in the prisms increases? I had to make prisms out of construction paper of the same size, but I think my measurements are off. I do not have ...
*Sunday, April 10, 2016 by Jace*

**7th grade math**

A submarine descends below the oceans surface at a rate of 75 feet per minute. How naby feet below the iceabs surface will the submarine be in 12 minutes
*Sunday, April 10, 2016 by zaire*

**Math :) **

Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volume? I thought that the higher the volume, the longer the amount of time the ice cube does NOT melt. Which one is best? Thank you. :)
*Sunday, April 10, 2016 by Mariana W. *

**Math **

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...
*Sunday, April 10, 2016 by Nicole *

**Math**

1. Determine which ordered pair is a solution of y = x^2-2 (5, 21), (–5, 24), (–1, –1), •• (–2, 6) 2. Without graphing, tell whether the line containing (6, –3) and (0, –8) is horizontal, vertical, or neither I think it's horizontal ...
*Sunday, April 10, 2016 by Queen*

**Math**

I need Help! ---------------------------------- 1.Peeta walked 8 miles. He stopped every 3/4 of a mile to eat a cookie. How many cookies did he eat during his walk? 2.What fraction is the same as the division problem below? A.8/3 B.5/8 C.8/2 D.3/8 3.Which division problem is ...
*Sunday, April 10, 2016 by Bonny the Horse *

**Math 143**

What is the probability of not rolling a number larger than 4 with a fair die?
*Sunday, April 10, 2016 by Lucy*

**Math**

If Owen gives $50 to charley, they will have an equal amount of money. If Charley gives $100 to Owen, the ratio of Owen's money to Charley's money will be 4:1. How much money does Owen have in the beginning?
*Sunday, April 10, 2016 by John U.*

**Math**

find the slope of a line that is perpendicular to the line containing the points (–2 –1) and (2 –3) A.) m=-2 B.) m=2 C.) m=-1/2 D.) m=1/2
*Sunday, April 10, 2016 by jai*

**Math**

You have $30 to spend on picking 25 pounds of two different types of fruit at a farm. The apples cost $1.40 per pound the blueberries cost $.90 per pound and the cherries cost $1.10 per pound. You want prices many pounds of apples as the other two fruits combined. A.) write a...
*Sunday, April 10, 2016 by Jude*

**Math**

A web-site asks users to create a 5-symbol PIN code where first and second symbols are any letters from the English alphabet and next 3 symbols are any digits. How many different PIN codes can be created?
*Sunday, April 10, 2016 by I need help*

**Math**

Is this correct? Divide the reciprocal of -9 by the opposite of -9. This is my answer -9/1 / -9 -1/9 / 9 -1/9 * 1/9 = -1/81
*Sunday, April 10, 2016 by Lynn*

**math**

in 2000, the population of a town was 8914. the population expected to grow at a rate of %1.36 each year. in what year will the population first exceed 15000? my answer:2007
*Sunday, April 10, 2016 by Anonymous*

**Math**

Ginny had 1 4/5 yards of green ribbon and 1 2/3 yards of yellow ribbon. Did she have enough ribbon to put around a hat that needed 3 yard of ribbon? Explain your answer. ----------------------------------- I need help on the explaining part. I said no. Thank You for your help.
*Sunday, April 10, 2016 by Bonny the Horse *

**Math**

I need help. Solve the proportion: 4:x :: -3/8:12
*Sunday, April 10, 2016 by Lynn*

**Math **

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...
*Sunday, April 10, 2016 by Nicole *

**Math **

A plane flies 430 miles at a bearing of N27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting point to the ending point ? I found distance to be 450.69 mi by using A^2+B^2=C^2 because it is a right triangle. I am confused ...
*Sunday, April 10, 2016 by Nicole *

**Math: Parametric Equations**

The graph of the parametric equations x=cos(t) y=sin(t) meets the graph of the parametric equations x=2+4cos(s) y=3+4sin(s) at two points. Find the slope of the line between these two points. So far I've set up the system of equations cos(t)=2+4cos(s) sin(t)=3+4sin(s) but ...
*Sunday, April 10, 2016 by Katie*

**Math ratio**

Melanie mixes water with plant fertilizer in a proportional relationship that can be represented by the equation w=3p, where w is the number of quarts of water and p is the number of tablespoons of plant fertilizer. To keep this suggested ratio,should Melanie mix 1 quart of ...
*Sunday, April 10, 2016 by Caroline*

**Math Grade 7 **

To improve her cardiovascular capacity,Mia wants to increase the distance she walks each day. She now walks 1/2 mile in 8 1/2 minutes. If Mia keeps the same pace, will she be able to walk 1 1/2 miles in less than 1/2 hour?
*Sunday, April 10, 2016 by April*

**Math**

Circle the number closest in value to 4. 1. 4.123 2. 4.03 3. 3.981 4. 4.001 The answer I selected is 3.981 is this correct?
*Sunday, April 10, 2016 by Harry*

**math**

find the constant of proportionality(k) from the equation 2y=108y
*Sunday, April 10, 2016 by gladys*

**math**

a tower 7 metres high stands on top of building which is 9 metres high. An observer at the bottom of the building notices that, as she walks away from the building, the angle theta which the tower subtends at her eyes seems to increase in size for a certain distance and then ...
*Sunday, April 10, 2016 by haro*

**math**

how many pieces would that be a month
*Sunday, April 10, 2016 by anita*

**math**

what is a 100 tons per month? please answer
*Sunday, April 10, 2016 by anita*

**Math**

Laurie and Anna are running a 3 mile race. After 5 minutes, Laurie has run 3/5 miles and Anna has run 7/10 mile. If both ladies can keep their same pace for the remainder of the race, how many minutes ahead of Laurie will Anna cross the finish line?
*Sunday, April 10, 2016 by April*

**Math**

Find F'(x) Original equation: F(x)= definite integral of x+3 to 0 (10t+1) dt
*Sunday, April 10, 2016 by Lanie*

**math**

in a school with 1500 students , one student returned from vacation with a contagious flu virus on 1st January. the spread of the virus through student body is given by y=1500/1+1499e^-0.85t where y is the total number of students infected after t days. the school would cancel...
*Sunday, April 10, 2016 by holy*

**math**

solve for x and y , the simultaneous equations 4^x+3 = 32(2^x+y) and 9^x + 3^y = 10
*Sunday, April 10, 2016 by Deen*

**math**

solve the equation Ig(x+14)-Ig(x-2)=2Ig5
*Sunday, April 10, 2016 by carolina*

**Math**

You have tow ropes one 14inches the other 23 inches if you if you need three feet of rope what do you do use RDW to solve
*Sunday, April 10, 2016 by Courtney*

**math**

Which figure results from slicing a pentagonal pyramid with a plane through the vertex that is perpendicular to the base?
*Sunday, April 10, 2016 by Anonymous*

**Math**

Katherine spends 7 h a day in school. This includes a 30 min lunch break each day. a) Write a ratio that compares the time for her lunch break with the total time she spends at school each day. b) Write a ratio that compares the time for her lunch breaks for a week with the ...
*Sunday, April 10, 2016 by O*

**Math**

Victor can ride his bike 15 miles in 2 hours. He uses this ratio 15:2, to write an equation that shows the relationship between the distance he bikes and the time it takes. Victor's work is shown below. Is his equation correct?
*Sunday, April 10, 2016 by April*

**Business Math - help needed **

Federal Express bought material handling equipment for its hub operations that cost $180,000. Using the MACRS, what is the depreciation expense in year 3 (using a five-year class)? A. $43,560 B. $34,560 C. $15,360 D. $40,000 Answer: B??
*Sunday, April 10, 2016 by A*

**math**

To make muffins, Mrs Chan mixed 3 cups of flour with every cup of milk. (a) What is the ratio of the number of cups of flour to the total number of cups of flour and milk? (b) What proportion of the mixtures is milk? (c) If Mrs Chan used a total of 20 cups of flour and milk, ...
*Sunday, April 10, 2016 by Saba*

**math**

There are some peanuts and almonds in a packet. The proportion of peanuts is 2/3 of the total number of nuts in he packet. (a) What proportion of nuts in the packet are almonds? (b) What is the ratio of the number of almonds in the packet to the total number of nuts in the ...
*Sunday, April 10, 2016 by Saba*

**math**

A carterer makes 50 l of lemonade. She keeps 10% of the lamonade for her family. She sells 65% of the remaining lenonade. How many liters of lemonade does the carterer have left?
*Sunday, April 10, 2016 by Saba*

**math**

A school library had 1050 books last year. There are only 950 books in the library this year. What is the percentage decrease in the number of books? Round your answer to 2 decimal places.
*Sunday, April 10, 2016 by Saba*

**Math**

Shelley drives her car for p days over a 30-day period. Her sister Helen used it for 1/6 of the remaining days. (a) For how long does Helen use the car? (b) For how long do Shelley and Helen use the car over a 30-day period?
*Sunday, April 10, 2016 by Jackii *

**math**

There are 1500 poultry on a farm. 40% are chickens, 2/3 of the ramainder are ducks and the rest are geese. What percentage of the poultry are geese?
*Sunday, April 10, 2016 by Saba*

**math**

In an English test, Alvin scored 28 out of 40 marks. In a Mathematics test, he scored 36 out of 60 marks. (a) In which test did Alvin score better? (b) What was the percentage difference between Alvin's scores for both tests?
*Sunday, April 10, 2016 by Saba*

**math**

There are 54 paintings in the National Museum. The ratio of the number of sculptures to the number of paintings in the museum is 7:9. (a) Express the number od sculptures as a fraction of the number of paintings. (b) How many sculptures are there in the museum? (c) The number ...
*Sunday, April 10, 2016 by Saba*

**math**

There were 60 basketball players in the school team last year. This number of basketball players increases to 80. What is the percentage in the number of basketball players?
*Sunday, April 10, 2016 by Saba*

**math**

A rice cooker was sold for $60 after a discount of 60%. What was the price of the rice cooker?
*Sunday, April 10, 2016 by Saba*

**Math**

A utility company has the following rate schedule for natural gas usage in a city's district: Monthly service charge of $8.80; Per therm service charge: 1st 25 therms: $0.6686/therm; Over 25 therms: $0.85870 (a) What is the charge for usaging 25 therms in one month? (b) ...
*Sunday, April 10, 2016 by Anonymous*

**Math**

A utility company has the following rate schedule for natural gas usage in a city's district: Monthly service charge of $8.80; Per therm service charge: 1st 25 therms: $0.6686/therm; Over 25 therms: $0.85870 (a) What is the charge for usaging 25 therms in one month? (b) ...
*Sunday, April 10, 2016 by Anonymous*

**math**

There's a frog at the bottom of a 30-foot well. The frog will rise 3 feet in the morning & would slid down 2 feet in the evening. If the frog will start on February 1, what date will it reach the top?
*Sunday, April 10, 2016 by johanah*

**Math**

List All Of The Integers There Are Between The Square Root Of 13
*Sunday, April 10, 2016 by Samantha*

**Math**

A railway engine starts shunting wagons by first going 1000 m North of railway station. It reverses and travels 1250 m South and then it again moves 600 m north. Finally moving 800 m South it comes to rest. How far is the engine from the station and in which direction?
*Saturday, April 9, 2016 by Kuntal Roy*

**Math**

I have 3 nickels, 1 quarter, and 1 penny in my pocket. If I pick out a coin from my pocket, do not replace it, then pick out a second coin from my pocket, what is the probability that the second coin that I pick out of my pocket is a nickel? So far I have come up with this: P(...
*Saturday, April 9, 2016 by John*

**Math**

Shelley drives her car for p days over a 30-day period. Her sister Helen used it for 1/6 of the remaining days. (a) For how long does Helen use the car? (b) For how long do Shelley and Helen use the car over a 30-day period?
*Saturday, April 9, 2016 by Jackii *

**Math **

Carissa predicted she answered 19 questions correctly out of 20 on a test .She actually got 17 answers correct .By what percent was Carissa's prediction off ?
*Saturday, April 9, 2016 by Shernett *

**Math**

Two lamps are to be chosen from pack of 12 lamps where four are defective and the rest are non defective. what is the probablity that a.both are defective? b.one is defective? c.at most one is defective?
*Saturday, April 9, 2016 by Estifanos*

**Math**

A scale drawing of the floor of a theater has a scale factor of 18. Mark says that he can use this information and any length on the scale drawing to find the corresponding length and the actual theater. He says that he can also use this information and any length in the ...
*Saturday, April 9, 2016 by Shaun*

**math**

One car went 10 miles farther when traveling at 50 mph than a second car that traveled 2 hours longer at a speed of 40 mph. How long did the first car travel?
*Saturday, April 9, 2016 by Anonymous*

**Math**

Ryan bought 2 1/4 pounds of almonds and divided them into bags with 1/8 pound in each bag.
*Saturday, April 9, 2016 by Lina*

**Math**

When did you first start a saving plan? What is the purpose of the saving plan? How will having a saving plan benefit someone?
*Saturday, April 9, 2016 by Sara*

**Math**

For this problem (2)^0 (-2)^0 would I add the exponents? I f so what do I do with 2 and -2?
*Saturday, April 9, 2016 by Jack*

**Math**

For this problem (2)^0 (-2)^0 do I add the exponents? If so then what Would I do with 2 and negative 2
*Saturday, April 9, 2016 by Jay*

**Math**

2e^3x=16 Solve for x. So far I changed this to 2ln3x=16 then ln3x=8 then...
*Saturday, April 9, 2016 by Student*

**Math: Parametric Equations**

Let G be the graph of the parametric equations x = cos(4t), y = sin(6t). What is the length of the smallest interval P such that the graph of these equations for all t E P produces the entire graph G? (The "E" represents the symbol for "is in" that looks ...
*Saturday, April 9, 2016 by Katie*

**MAth**

Jasmine invested $73,000 in a fixed rate account offering 7.2% interest rate compounded semiannually. How long will it take her to grow it to $100,000?
*Saturday, April 9, 2016 by Petra*

**Math**

A scale drawing of the floor of a theater has a scale factor of 18. Mark says that he can use this information and any length on the scale drawing to find the corresponding length in the actual theater. He says that he can also use this information and any length in the actual...
*Saturday, April 9, 2016 by Jason*

**Math, science**

in 2009 an earthquake of magnitude 6.7 shook the kermadec islands off the coast of new zealand. also in 2009 an earthquake of magnitude 5.1 occured in the alaska peninsula. How many times stronger was the kermadec earthquake. Use formula log (I1/I2)=m1-m2 A.39.811 B.20.593 C.5...
*Saturday, April 9, 2016 by Student*

**math**

Sam has 9yellow pencils in his desk three fourth of his pencils are yellow how many pencils does sam have in his desk
*Saturday, April 9, 2016 by Daniel *

**Math**

For this problem it says to explain why an equilateral scalene triangle is impossible to draw. Would it be because not all three sides will be equal?
*Saturday, April 9, 2016 by Jay*

**Math**

You are fencing in a rectangular area The length is x+5 and the width is x. The total area is 350 ft² . Find the perimeter.
*Saturday, April 9, 2016 by Dnje*

**Math**

A wheel makes6 1/12 revolution per minute. If it rotates 45 minutes,how many revolutions does it make
*Saturday, April 9, 2016 by Albert*

**math**

jeremy withdraws cash from an ATM that is not his own bank's 6 times a month. He pays $1.25 per transaction. if this pattern is consistent across a year, what will his yearly cost be? a) $90.00 b) $45.00 c) $15.00 d) $7.50 marley decides to invest in a Tax Free savings ...
*Saturday, April 9, 2016 by ben 8 grade*

**math**

Three switches are to be installed in a panel. The switches are each 21/2 inches wide. There will be 11/4 inches clearance between switches and 37/8 inches between any switch and the edge of the box. How wide is the box?
*Saturday, April 9, 2016 by Anonymous*

**Math**

suppose you have two prisms with the same volume. one is shaped like a cube and the other is "longer." which has the lesser surface area?
*Saturday, April 9, 2016 by Elizabeth*

**math**

LOG(base5)(3/5)+3log(base5)(15/2)-log(base5)(81/8)
*Saturday, April 9, 2016 by olaide*