Tutors Answer Your Questions about Miscellaneous Word Problems (FREE)
Question 236034: Can you please explain this to me? I think the argument is correct, but I'm not 100% and I wouldn't know where to begin explaining why. Thanks so much for your help!!
Hosni gave the following argument that - (a + b) = -a + -b, for all integers a and b. If the argument is correct, supply the missing reasons. If it is incorrect, explain why not.
-(a + b) = (-1)(a + b)
= (-1)a + (-1)b
= -a + -b
Click here to see answer by punksnotdead28(4)   |
Question 236273: Nolan walked to the store from his home at rate of 5 miles per hour. After spending one-half hour in the store, his friend gave him a ride home at the rate of 30 miles per hour. He arrived home 1 hour and 5 minutes (1 1/12 hours) after he left. How far is the store from Nolan's home?
Click here to see answer by stanbon(25959) |
Question 236182: A Merchant mixes tea that sells for $7.20/kg and tea that sells for $9.20/kg to make 100 kg of tea that he sells for $8.80/kg. How many kilograms of each type of tea did he mix?
Also to solve it, it has to be either the substitution or elimination method.
Click here to see answer by checkley77(6671) |
Question 235797: A lot is in the shape of a right triangle. The shorter leg measures 60 meters. The hypotenuse is 20 meters longer than the length of the longer leg. How long is the longer leg
help
Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution.
i know that the 5 steps of problem, solving process is to
familiarize translate carry out check and state but i am not sure what order i start with to do the formula.
the
Click here to see answer by ankor@dixie-net.com(6567)  |
Question 236021: Sally is building a box with a square base for her ant
colony. The bottom of the box and all four sides are con-
structed of glass costing $1/ft2, and the top is to be con-
structed of glass costing $5/ft2. Sally has $72 to spend on
the box. How should she choose the dimensions so that the
volume of the box is greatest?
Click here to see answer by ankor@dixie-net.com(6567) |
Question 235882: The Body Mass Index,I,can be used to determine an individual's risk for heart disease. An index below 25 indicates a low risk. The body mass index is given by the formula I=700W
------
H^2 where W=weight in pounds, and H=height in inches.
Jerome is 70 inches tall. What weight will keep his body mass index between 20 and 28?
Jerome's body mass index will fall between 20 and 28 for the set of all weights such that ?
I can't seem to figure out how to do this problem without a weight given....
Click here to see answer by ankor@dixie-net.com(6567) |
Question 235993: three times the smaller of 2 numbers increased by 5 times the larger is 229. four times the smaller decreased by 25 equals 3 times the larger. find the numbers.
Also to solve it, we either need to use substitution or elimination method.
Click here to see answer by solver91311(4818)  |
Question 235831: A total of 310 pumpkins were picked, separated by large and small. Large sold for $9.00 and small for $3.00. All pumpkins were sold and sales totalled $1,950.
How many small and large pumpkins were picked?
Click here to see answer by AJHunter(1)  |
Question 235483: A very long hallway has 100 lights with pull cords hanging from the ceiling. All the lights are off. A person comes along and pulls every cord, turning on all the lights. A second person comes along and pulls every second cord. This would turn off light numbers 2, 4, 6 etc. A third person comes along and pulls every third cord. Turning on some lights and turning off others. This continues until the one hundredth person comes along and pulls the one hundredth cord. At this point, which lights are on?
Click here to see answer by solver91311(4818) |
Question 234666: the sum of three numbers is 95 the sum of the first and the second is twenty-five more than the third number and the third is twice the first. find the numbers and show your work. i know this problem is x+y+z=95 but then I dont know where to go from there.
Click here to see answer by ankor@dixie-net.com(6567) |
Question 234292: Please help me solve this word problem:
A drug store parking lot has space for 1000 cars. 2/5 of the spaces are for compact cars. On Tuesday, there were 200 compact cars and some standard size cars in the parking lot. The parking lot was 3/4 full. How many standard size cars were in the parking lot?
----Thank you =)
Click here to see answer by ankor@dixie-net.com(6567) |
Question 234706: The Longs checking account was overdrawn by $35.87. On September 12, they deposited $580 in the account. While shopping on September 18, Mrs.Long wrote checks for $25 and $254.09. Find their new account balance.
Click here to see answer by josmiceli(2979) |
Question 234601: Amy and Kim earned a total of $308 by working a total of 30 hours. If amy earns $8 an hour and kim earns $12 an hour. How many hours did each work?
If someone could help turn this into an equation I would appreciate it. thank you
Click here to see answer by solver91311(4818) |
Question 234311: Please help me solve this word problem:
Glenna wants to rent a car for a trip to Key West for one week. She calls two car rental companies to get prices. Mr. Kotter's Rentals rents a Cadillac Escalade for $99 foe one week plus $0.11 per mile over 100 miles. Barbino's Rentals has the same vehicle for $75 per week and $0.15 per mile over 150 miles. If it is 432 miles to Key West, which company has the better deal? How many miles would Glenna drive before she would be spending the same amount at either company?
----Thank you =)
Click here to see answer by ankor@dixie-net.com(6567) |
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