Tutors Answer Your Questions about Unit Conversion Word Problems (FREE)
Question 224407: A projectile is fired upward from the ground with an initial velocity of 571 feet per second. Assume that the height of the projectile at any time t can be desceibed by the polynomial function P(t)=-16t2(squared) +571t. Find the height of the projectile at each given time.
3 seconds?
6 seconds?
10 seconds?
12 seconds?
Explain why the height changes as time passes.
Click here to see answer by Alan3354(30993)   |
Question 225169: __-2x_ -_ 8___
x2 + 2x -8
OH No here is another I found that i cannot do. -2x-8 is on the top and x2+2x-8 the 2 next to the x is to the power type of 2 nota normal 2 ok? I hope i am not confusing anyone!! Thank you for your help i appreciate it a lot!!!!!
Click here to see answer by Alan3354(30993) |
Question 225162: Hi all I am having some problems with my math class I am taking now, but so far I only have one word problem that is giving me grief can someone please help me??
There are 480 dishes that need to be rinsed. John can rinse them in 120 minutes by himself. It will take his friend Bob 80 minutes to rinse these dishes. How long will it take them if they rinse these 480 dishes together?
Click here to see answer by Alan3354(30993) |
Question 172355: Getting frustrated on figuring out the answer for the following/would someone please help me? Thank you.
1.A local caterer charges $8.50 per person to serve boxed lunches at meetings on campus, plus a $15.00 delivery charge for each event. Using L for the number of lunches served and D for the number of events delivered to, set up an expression that can be used to track catering costs.
Is the answer Catering cost=8.50L +15.00D
2. Using the expression created in previous question, calculate the total cost to have a total of 33 lunches delivered to campus; 15 to a Monday meeting and the remainder on Wednesday.
is the answer $142.50+ $168.00 ?
3. A room that measures 18 feet by 24 feet will require how many square yards of carpet to cover the floor? (If necessary, round to the nearest yard.)
is the answer 18*24 ?
4. Which has a larger engine; my vintage Chevy SS (displacement of 327 cubic inches), or my daughter's newer Mustang (displacement of 5.0 liters) ?
?
Click here to see answer by LtAurora(115)  |
Question 225721: Reduce the following rational expression to its lowest terms:
20u2y5/15y3z6-10y4
The only numbers that are whole numbers are the 20 and the 15. The others are 'to the power' numbers. I have absolutely no clue how to do this one please help. This is a fraction. a very big fraction. I hope no one thinks I am a total retard I am just awful with math problems!! Sorry!!!!
Click here to see answer by ankor@dixie-net.com(15661)  |
Question 227388: I make my fractions like this: ??/?? with the slash in the middle and all on one line. Solve the equation.Can you help me with these 2 problems?
-3/x=x/3
I do not no how to solve these correctly. Can someone please show me how to do these correctly??? I really need to pass this course, and I need all the help I can, so it would be much appreciated!!! Thanks!!
2/x-3 + 3/3-x
Click here to see answer by ankor@dixie-net.com(15661) |
Question 228962: Hi all I have been doing pretty good lately Until Now!!
I need help with writing the problem in a simplified radical form.
Assume that all variables represent positive real numbers. And I have no idea how to write the v------- type thing.
Except it is a solid line and not quite a v at the begining. Does anyone no what I am talking about? Square root symbol maybe?
These are under the line of the 'square root symbol" there is nothing on the left side of the symbol. And the 11 and the 2 are 'to the power numbers.'
12t11 u2
I have no idea if anyone will even understand this but if you do please help me.
Thank you very much!!
Click here to see answer by ankor@dixie-net.com(15661) |
Question 230449: The surface area of a right prism is given by
S=2B+ph
where B is the area of the base, P is the perimeter of the base, and h is the height of the prism.
Solve for .
WIll someone please help me with this one. I do not no how to start this one.
Click here to see answer by stanbon(57399) |
Question 230694: The surface area S of a right prism is given by
S=2B+Ph,
where B is the area of the base, P is the perimeter of the base, and h is the height of the prism.
Solve for h.
Sorry Stan I did not put the h in the last question.
Click here to see answer by stanbon(57399) |
Question 237388: Okay so I have this problem that I believe I know how to do, but the only problem is that I don't know how I would convert miles to a year. That was where I was really stuck. Here's the problem:
"Sommer wants to buy a new car. She currently drives a car that gets 30 miles per gallon. She is contemplating buying a car that get's 40 miles per gallon. Sommer drives 15,000 miles per year. Assume that gas costs $1.65 per gallon the entire year. How much will Sommer save on gas in 1 year if she buys the new car?"
I know the question is to find the money amount for how much gas is saved, but then that's also another problem I have is how to find that. If anyone knows how to go about solving this problem or setting it up, please let me know! Thank
you so much!
Click here to see answer by josmiceli(9697)  |
Question 237387: I am having trouble will conversions and I was given this problem to solve. They give you a lot to go off of, but I don't know where to start or better yet what to start with. I assume it wont matter which unit you start with, but then I wasn't sure so here's the problem I was given:
"Kay wants to buy a new fireplace insert that will burn gas instead of wood. She normally uses two cords of wood in the winter. Wood costs $250/cord. She is interested in knowing how much she will save if she burns gas in the fireplace insert. Gas costs $0.70 per therm. One therm is 100,000 BTU. The fireplace insert burns 33,000 BTU per hour. Kay figures she will burn the fireplace 5 hours per day for 120 days. How much will she save in one winter if she burns gas instead of wood?"
It seems like you have to do a lot of conversions, but is there a simpler way to do it or do you have to do every conversion they listed? If anyone has an idea on how to solve this that would be very much appreciated!
Click here to see answer by ankor@dixie-net.com(15661) |
Question 237585: If Jan can paint a house in 4 hours and Bill can paint the same house in 6, how long will it take for both of them to paint the house together...?
Trying to figure out how to set this one up, it should be simple and was thinking of converting into a fraction with a common denominator... but was sure if that was making it harder than it was ? thanks
Answer given is 2 hrs 24 mins just not sure how 2 get there....
Click here to see answer by nerdybill(6963)  |
Question 246515: maria kept recored on how much she spent on gasoline and the maintenance on her car. she found that is cost 485 dollars to drive 500 miles in a month. find the cost per mile. find the cost for driving 1,200 miles and about how many miles are driven for a cost of 820 dollars?
Click here to see answer by rfer(12670) |
Question 255350: Hi, I need someone's help please. I keep getting 94.724 for my answer and the actual answer is 87 decibels. What am I doing wrong? I have included my work as well.
The sound produced by a jet engine was measured at a distance of 100 m in all directions. The loudness d of the sound (in decibels) was found to be d=70.0+30.0cos0 , where the line 0degrees was directed in front of the engine. Calculate d for 0=34.5degrees.
d=70.0+30.0cos(34.5)
d=70.0+24.724
d=94.724
Click here to see answer by richwmiller(9143)  |
Question 258568: HELP! I'm an old dog learning new stuff. I'm having trouble getting this to click in my old brain. I'm supposed to figure this out by using dimensional analysis.... Thanks so very much for your help!
If a block of ice measures 24 in. x 36 in. x 18 in.
(a) What is the volume of this block in cubic meters?
(b) What is the total surface area of the block in square centimeters?
Click here to see answer by stanbon(57399) |
Question 258568: HELP! I'm an old dog learning new stuff. I'm having trouble getting this to click in my old brain. I'm supposed to figure this out by using dimensional analysis.... Thanks so very much for your help!
If a block of ice measures 24 in. x 36 in. x 18 in.
(a) What is the volume of this block in cubic meters?
(b) What is the total surface area of the block in square centimeters?
Click here to see answer by richwmiller(9143) |
Question 258977: There are more than 1/4 million species of beetle. Assume the average length of a beetle is 1cm and the average walking speed is 10 cm per second. These beetles walk up a gang-plank that is 5 meters long onto an ark. They do this in pairs, side by side, one male and one female from each species. The pairs of beetles are spaced 5 cm apart. How many hours will it take for 1/4 million species of beetles to embark onto the ark once the first pair starts up the gangplank?
__________ hours
Click here to see answer by Alan3354(30993) |
Question 259614: I am a parent (father) trying to help my 12 year old son (7th grader) with this word problem. I haven't a clue how to solve this question. The question is: An artist carved a bear out of a block of wood. The term 21^3 (not sure if this is twenty-one to the third power) represents the volume, in cubic centimeters, of the block. What is 21^3 in standard form?
Click here to see answer by stanbon(57399) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900
|
