Tutors Answer Your Questions about Proportions (FREE)
Question 325317: A card is selected from a standard deck of 52 playing cards. Find the probability of selecting
1. a five given the card is a not a club.
2. a heart given the card is red.
3. a face card, given that the card is black. (An ace is not a face card.)
Show step by step work. Give all solutions exactly in reduced fraction form.
Click here to see answer by Edwin McCravy(8893)  |
Question 325680: On a house plan on which 2 inches represents 5 feet, the length of a room measures 7 1/2 inches. The actual length of the room is. I know how to set the problem up but don't know the next step. 2 inches/7 1/2 inches = 5/x I know to cross multiply what next Please help.
Click here to see answer by rfer(12655) |
Question 328804: If on a scale drawing 5 inches represents 80 feet then 3/4 inch would represent how many feet?
I tried to divide 5 int 80 and it came out 6.66ongoing and i figured out that that was not right so i thought i would try and divide 80 into 3/4 but im not really shurr how to go about doing this question.
Click here to see answer by scott8148(6628)  |
Question 330480: Jim is making a diagram of the solar system. If he draws Neptune, which is 2795 million miles from the sun, 10 inches from the sun on his paper, how far away ( to the nearest tenth of an inch) from the sun should he draw Mars, which is 142 million miles from the sun?
Click here to see answer by nyc_function(2733)  |
Question 331630: Problem: the instructor of an introductory computer course wants to make a wall chart of a computer desktop for students.to make it realistic the desktop icons must be proportional to the size of her 6ftX6ft wall chart. If the icons on her 15"X15" PC screen are 3/8" X 3/8" How large should they be on her wall chart?
I think I have to find out what 3/8 to 15 is ,then use that to calculate for 6ftX6ft chart. Im not able to reason out a formula .
Click here to see answer by solver91311(16877)  |
Question 332210: I have a space that is 9 ft long and 6 ft wide. I want to increase the dimensions of the space by the same distance each way and have the area of the new space 5 times the area of the present space. How many ft should I add to both the width and the length? Thanks
Click here to see answer by mananth(12270)  |
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