Tutors Answer Your Questions about Miscellaneous Word Problems (FREE)
Question 118387: a graduated cylinder was filled with water to the 15.0 ml mark and weighed on a balnace. It mass was27.35g. An object made of silver was [placed in the cylinder and completely submerged in the water. The water level rose to 18.3ml. When reweighed the cylinder,water and silver object had a total mass of 62.0g.
Calculate the density of silver
Click here to see answer by ankor@dixie-net.com(22740)   |
Question 118426: An open box is to be made from a 10 cm by 20 cm rectangular piece of cardboard by cutting a square from each corner and folding up the sides. The area of the bottom of the box is 96 cm squared. What is the length of the sides of the squares that are cut from the corners?
I really need help solving this algebraically. If you could help that would be amazing!
Click here to see answer by jim_thompson5910(35256) |
Question 118546: A dentist places a gold filling in the shape of a cylinder with a hemispherical top in a patient's tooth. The radius of the filling is 3 mm. The height of the cylindrical portion is 4 mm. If dental gold costs $16.00 per cubic millimeter, how much did the gold for the filling cost? Round to the nearest cent. Use π ≈ 3.14.
Click here to see answer by ankor@dixie-net.com(22740) |
Question 118588: 12.on a man 1 1/2 inches represent 45 miles. If two cities are 5 inches apart on a map, how far are they in reality? I mutiplied 45 times 5 and got 225 miles is this right?
13. A quality control inspector examined 42 light bulbs and found 7 defective. At this rate, how many defective bulbs will there be in a lot of 2682? I divided 2682 by 7 and got 383.
14. It takes Bob 30 minutes to type three-fourths of a page of his term paper. At this rate, how long will it take to type a 6 page paper? I multiplied 30 by 6 and divided that answer by 4 and got 240.
15. A train traveled 264 miles in 6 hours. At this rate, how far will it travel in 11 hours? I multiplied 264 by 11 and got 2904 miles.
thanks very much
Click here to see answer by josmiceli(19441)  |
Question 118784: There are two boats that start out on opposite sides of a river at the same time. Each one is heading across the river to the other side. They each go a constant speed throughout the entire problem (so ignore having to slow down to turn around, and ignore current, etc.), but they are not necessarily the same speed as each other. When each boat reaches its opposite bank, it immediately turns around and heads back to where it started. The boats thus pass each other twice. The first time they pass, they are 700 yards from one of the banks of the river. The second time they pass, they have each turned around after reaching their respective opposite shores and have started back toward where they each began. When they pass the second time, they are 300 yards from the other bank of the river. How wide is the river?
Click here to see answer by scott8148(6628)  |
Question 118888: 4 clues to solve for a number.
Clue #1 My number is even.
Clue #2 The factorization is a string of two numbers.
Clue #3 The string of numbers has 1 even and 1 odd number.
Clue #4 My number is less than the 3rd square number and larger than the 2nd square number.
What is my number.
I have no idea how to solve this. Do I pick random numbers and go backward in the clues? Please help.
Click here to see answer by jim_thompson5910(35256) |
Question 118969: The logistics manager at the factory needs to know the mass of chocolate that will be moving through his warehouse each week for storage and transporting purposes. He also needs to know the number of shippers and the weight of each carton in kg given that each shipper takes 6 cartons and each carton takes two dozen bars. Each bar weighs 80g. He bases his calculations on 14 shifts per week
Click here to see answer by josmiceli(19441) |
Question 119357: The difference of 2 numbers is 15.The smaller number is 3 more than half the larger number.Find both numbers?
Could someone please help me with this problem.I got this answer sm#=21 Lg#=36.Is this correct?Many thanks
Click here to see answer by checkley71(8403) |
Question 119418: hello, i need help w. this certain word problem
maria bought seven boxes. a week later half of all her boxes were destroyed in a fire. there are now only 22 boxes left. with how many did she start?
thank you in advance.
Click here to see answer by stanbon(75887) |
Question 119481: Good evening ma'am or sir, please help on how to solve this problem involving expressions with exponents. I didn't know what I will do with this one.
4). Alpha Centauri is 4.3 light years from Earth. Express this distance in kilometers in scientific notation. (A light year is 9.5*10^12 km).
Thank you very much!!!
Click here to see answer by josmiceli(19441) |
Question 119480: Good evening ma'am or sir, please help on how to solve this problem involving expressions with exponents. I multiplied 5.89*10^-7 and 1*10^-9, I didn't konw if that one I did was correct.
3). The D line or yellow line of the metal sodium has a wavelngth of 5.89 * 10^-7 meter. If one (1) millimicron equals 1*10^-9 meter, express the wavelength of the D line in micromillions.
Thank you very much!!!
Click here to see answer by josmiceli(19441) |
Question 119478: Good evening ma'am or sir, please help on how to solve this problem involving expressions with exponents. This one was a nosebleed for me, no matter how much I try it I still can't get the right answer.
1). The speed of radio waves is 297 600 km per second. How much time is needed for the radio imjpulse to travel from a station to a radio if the distance between them is 1280 km?
Thank you very much!!!
Click here to see answer by josmiceli(19441) |
Question 119477: Good evening ma'am or sir will you please help on how to solve this problem involving expressions with exponents? Thank you very much.
4). An electric current of one (1) ampere will deposit 0.0011180 g of silver each second from a water solution of silver nitrate. How many grams of silver will be deposited if the current is 1 * 10^-1 amperes and the time is one (1) hour and 20 minutes?
Thank you.
Click here to see answer by MathLover1(20849)  |
Question 119479: Good evening ma'am or sir, please help on how to solve this problem involving expressions with exponents. I tried to multiply 1 000 000 and 4.7*10^-1, I don't know if that one I did was correct.
2). A meter is equal to 1 000 000 microns. Blue light has a wavelength of 4.7*10^-1 micron. Express this wavelength in meters.
Thank you very much!!!
Click here to see answer by stanbon(75887) |
Question 119476: Good evening ma'am or sir will you please help on how to solve this problem involving expressions with exponents? Thank you very much.
3). A light year, the distant light travels in one year, is equal to 9.44*10^12 km. If Polaris is about 64 000 000 000 km from earth, how long will it take light from this star to reach the earth?
Thank you.
Click here to see answer by stanbon(75887) |
Question 119621: The Cooking Club made some pies to sell at a basketball game to raise money for the new math books. The cafeteria contributed four piece to the sale. Each pie was then cut into five pieces and sold. There were a total of 60 pieces to sell. How many pies did the club make?
Click here to see answer by josmiceli(19441) |
Question 119615: The keyboard of a piano has seven full octaves plus two extra white keys and one extra black key. There are 36 black keys on a piano. How many black keys are there in one octave?
I tried this I don't think I'm right (need help)
7x=36-1
7x=35
x=5
Click here to see answer by stanbon(75887) |
Question 119690: The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spends $ 2000 a month on advertising , the revenue was 120,000 .If the revenue is now 180,000 , how much is the owner spending on advertising?
Click here to see answer by josmiceli(19441) |
Question 119689: The cost of producing a number of items x is given by C =mx+b in which b is the fixed cost and m is the variable cost (the cost of producing one or more item).
A. If the fixed cost is $40.00 and the varible is $10.00 ,write the cost equation .
B. Graph the equation
Click here to see answer by josmiceli(19441) |
Question 119597: 4. A ford expedition will travel 198 miles on 16.5 gallons of gasoline during city driving. What is the rate in miles per gallon? I divided 198 by 16.5 and got 12 mpg.
5. A package of 16 tea bags costs 2.29. Find the unit price in cents per tea bag. Round to the nearest tenth of a cent. I got 22.9 cents per bag.
16. Lia bought a new car. In the first 4 months, it was driven 3600 miles. At this rate, how many miles will the car be driven in 1 year? I tried doing the equation 4/3600=24/x my answers not coming out right.
Thanks for all the help.
Janelle
Click here to see answer by ankor@dixie-net.com(22740) |
Question 119755: Sam and Paul have 480 marbles between them. SAm arranges them in columns with 6 in each column, and paul arranges them with 9 in each column. The total number of columns is 72. Express the above information in the form of an algebraic expression.
Click here to see answer by checkley71(8403) |
Question 119899: Solve the problem. Parts for an automobile repair cost $448. The mechanic charges $28 per hour. If you receive an estimate for at least $532 and at most $616 for fixing the car, what is the time interval, in hours, that the mechanic will be working on the job?
a.{1,6}
b.{1,3}
c.{3,6}
Click here to see answer by ptaylor(2198)  |
Question 119997: 29. A bookstore can purchase several calculators for a total cost of $120. If each calculator cost $1 less, the bookstore could purchase 10 additional calculators at the same total cost. How many calculators can be purchased at the regular price?
Click here to see answer by josmiceli(19441) |
Question 120175: Solve, using two equations in two variables
If you buy six pens and one mechanical pencil, you'll get only $1 change from your $10 bill. But if you buy four pens and two mechanical pencils, you'll get $2 change. How much does each pen and each pencil cost?
If anyone can answer this problem I would deeply appreciate it. Please and Thank You!!!!
Click here to see answer by stanbon(75887) |
Question 120227: A person wants to have a concrete driveway in front of their house. The driveway will measure 62 and 1/3 feet long and 19 feet wide and will be 2/3 foot thick. How many cubic yards of cement will be needed for the driveway?
Click here to see answer by checkley71(8403) |
Question 120235: A storage bin for corn consists of a cylindrical section made of wire mesh, surmounted by a conical tin roof, as shown in the figure. The height of the roof is one-third the height of the entire structure. If the total volume of the structure is 2600 ft3 and its radius is 9 ft, what is its height? (Round the answer to one decimal place.)
Thank you for your help!!!
Click here to see answer by solver91311(24713)  |
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