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Tutors Answer Your Questions about Proportions (FREE)
Question 80782: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the cost of a pack of gum.
Click here to see answer by vertciel(183)   |
Question 80799: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the cost of a pack of gum.: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the cost of a pack of gum.
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 81480: Shelia leaves on a long trip traveling 30mph. Allison leaves the same location traveling to the the same spot 2 hours later. She drives at a steady rate of 60mph. How long after Allison leaves will she catch up to Shelia
Click here to see answer by doctor_who(15) |
Question 81596: the instructor of an introductory computer course wants to make a wall chart of a computer desktop for her students. to make it as realistic as possible, she would like the desktop icons to be proportional to the size of her 6ft by 6ft chart. if the icons on her 15 inch by 15 inch pc screen are 3/8 inch by 3/8 inch, how large should they be on her wall chart.
Click here to see answer by bucky(1732) |
Question 81431: Shelia leaves on a long trip driving at a steady rate of 30mph. Her sister Allison leaves from the same location traveling to the same destination 2 hours later. She drives at a steady rate of 60mph. How long after Allison leaves home does she catch up to Shelia?
Click here to see answer by ankor@dixie-net.com(6693) |
Question 70413: Suppose that you roll two number cubes.Use a tree diagram to find the probability of the event.
S I think that if you roll two dice then it will be a one then a two so from the one you have to put six tree branches then from the two you have to put six tree branches to.so eventually you count them all up and it comes to 12.so I just get really confused on how to make a probability like a fraction.Because I know that you have to do somthing with favarable outcomes.Please and thank you.
PROBABILITY
Click here to see answer by 303795(562) |
Question 83016: The electrical resistance (R) of a wire varies directly as its length(L) and inversely as the square of its diameter. A wire 20 meters long and 0.6 centimeters in diameter made from a certain alloy has a resistance of 36 ohms. What is the resistance of a piece of wire 60 meters long and 1.2 centimeters in diameter made from the same material? The answer is multiple choice.
a. 24 ohms
b. 27 ohms
c. 30 ohms
d. 48 ohms
Click here to see answer by funmath(2873) |
Question 83017: The period of a simple pendulum is directly proportional to the square root of its length. If a pendulum has a length of 6 feet and a period of 2 seconds, to what length should it be shorten to achieve a 1 second period? The answer is multiple choice.
a. 1 foot
b. 1.5 feet
c. 2 feet
d. 3 feet
Click here to see answer by funmath(2873) |
Question 83017: The period of a simple pendulum is directly proportional to the square root of its length. If a pendulum has a length of 6 feet and a period of 2 seconds, to what length should it be shorten to achieve a 1 second period? The answer is multiple choice.
a. 1 foot
b. 1.5 feet
c. 2 feet
d. 3 feet
Click here to see answer by josmiceli(3007) |
Question 76947: I dont quite understand how to find Ratios for similar polygons, using the ratio of corresponding side lengths.
My problem is:
Ratio of corresponding side lengths= 5:8
I need to find the ratio of perimeters and areas.
can you help me please
THANK YOU
Click here to see answer by vertciel(183) |
Question 86416: Tutor: could you help me with this word problem...???
Here it is: The cost, y, of growing special oranges in dollar as a function of the number of oranges, n is given by y=0.7n+20.34
What would be the plot of this equation and what is the cost of growing 50 special oranges?
Thank you!!
Click here to see answer by checkley75(3666) |
Question 86416: Tutor: could you help me with this word problem...???
Here it is: The cost, y, of growing special oranges in dollar as a function of the number of oranges, n is given by y=0.7n+20.34
What would be the plot of this equation and what is the cost of growing 50 special oranges?
Thank you!!
Click here to see answer by tutorcecilia(2042) |
Question 86621This question is from textbook Mathematics for elementary teachers
: The problem I am struggling with is as follows:
part a. If one inch on a map represents 35 miles, how many miles are represented by 3 inches? 10 inches? n inches?
This is what I have done so far:
35 miles to 1 inch = x miles to 3 inches
35:1 = x:3 (cross multiply)
x = 105
35 miles to 1 inch = x miles to 10 inches
35:1 = x:10 (cross multiply)
x = 350
35 miles to 1 inch = x miles to n inches
35:1 = x:n (cross multiply)
x = 35n
part b. Los Angeles is about 1000 miles from Portland. About how many inches apart would Portland and Los Angeles be on this map?
Don't have any clue how to set this problem.
Thank you for your help.
Sincerely,
R. Franke
sylleobear@hotmail.com
This question is from textbook Mathematics for elementary teachers
Click here to see answer by chitra(359) |
Question 86662This question is from textbook Mathematics for elementary teachers
: I am stumped with this problem. Please help.
The problem states:
A box contains three different varieties of apples. What is the smallest number of apples that must be taken to be sure of getting at least 2 of one kind? How about at least 3 of one kind? How about at least 10 of a kind? How about at least n of a kind?
This is what I tried:
3 varieties of apples : 1 = x : 2 apples of one kind
3:1 = x:2 (cross multiply)
x=6
3:1 = x:3
x = 9
3:1 = x:10
x = 30
3:1 = x:n
x = 3n
Any help would be most appreciated. Thanks.
Sincerely,
R. Franke
This question is from textbook Mathematics for elementary teachers
Click here to see answer by scott8148(3382)  |
Question 92034: I need the equation for figuring out how many mixtures (combinations) of letters can come from: ABCDE, then ABCDEF, then ABCDEFG, etc. (ex. for the first one ABCDE there are the following mixtures: AB, AC, AD, AE, AF, ABC, ABD, ABE, ABDE, etc. but an equation would help me solve this much faster.
Click here to see answer by stanbon(26273) |
Question 92111: a football coach needs 12 players to ride on a float in a parade. he randomly selects names from a helmet. the helmet contains the names of 4 freshmen, 13 sophmores, 14 juniors, and 8 seniors. what is the probability the first two names chosen are seniors?
Click here to see answer by stanbon(26273) |
Question 92318: Could you please help me with the set up and answer for the following problem:
A drink contains 3 ounces of orange juice and 5 ounces of 7up. How much 7up is needed for 15ounces of orange juice?
Thank you so much!
Click here to see answer by scott8148(3382) |
Question 93281: for a group of boxes all of the same girth (2x height + 2x width), the volume V varies directly as the length L.
If one of the boxes has a volume of 288 cu. in and length of 12 in., what is the constant of proportionality for the group of boxes?
Click here to see answer by Nate(3495) |
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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, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215
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