Tutors Answer Your Questions about Expressions-with-variables (FREE)
Question 73869: This is a worded problem.
Two tuba players stand 100 yards apart. After each set of steps, the distance between them is one half of the previous distance. How many set of steps will they take before they are less than 10 yards apart?
Click here to see answer by checkley75(3666)  |
Question 73958: i know the anwer to this problem is 5/2, but i am not quite sure how it was completely solved thanks do i find a common denominator? i am studyingfor a test and can't remember some of the stuff i learned at the beeginning of the semester. thank you
4(2x-1)=16
Click here to see answer by checkley75(3666) |
Question 73958: i know the anwer to this problem is 5/2, but i am not quite sure how it was completely solved thanks do i find a common denominator? i am studyingfor a test and can't remember some of the stuff i learned at the beeginning of the semester. thank you
4(2x-1)=16
Click here to see answer by ffc_01(9) |
Question 73711: An Egyptian Fraction has the form  , where  is a positive integer. In ancient Egypt, these were the only fractions allowed. Other fractions between zero and one were always expressed as a sum of DISTINCT Egyptian fractions. For example,  was seen as  or  . The preferred method of representing a fraction in Egypt used the "greedy" algorithm, which, at each stage, uses that Egyption fraction which eats up as much as possible of what is left of the original fraction. Thus the greedy fraction for would be .
a. Find the greedy Egyptian fraction representation for  . (I got  )
b. Find the greedy Egyptian fraction representation for  . (I got  )
c. Find the greedy Egyptian fraction representation for  , where  is a positive integer.
d. Find the greedy Egyptian fraction representation for the fraction  , where is a positive integer.
I know this might be a little complicated for this category, but I couldn't find any other place that would suit this kind of problem besides expressions with variables.
Click here to see answer by Edwin McCravy(8906)  |
Question 73961: Please help! I have tried to figure out the following problems for the past few days, but cannot understand. This subject is foreign to me. Whatever assistance you can provide, will be greatly appreciated. Also, can you please provide a step by step explanation so I can better understand the solution? Thanks.
Simplify:
a. 5x + 2y / 35x + 14y b. x^2 -5x -14 / 2x^2 - x - 10
Multiply:
c. x^2 - x - 20 / x^2 - 3x - 10 . x^2 + 7x + 10 / x^2 + 4x - 5
d. 4x^2 - 9 / 4x^2 + 12x + 9
/ (6x - 9)
Perform the operation indicated. Be sure to simplify.
a. 8/7+2x + x+3/2x+7
Find the LCD. Do not combine fractions.
a. 12/5a^2 , 9/ a^3 b. 13/x^2 - 16 , 7/x-4
Add:
a. 2/y-1 + 2/y+1
Subtract:
a. 3/x^2 - x - 12 + 2/x^2 + x - 20
Solve and check problems.
a. x - 2/4x = 1/6 b. 3/x + 5 = 3/3x - 2
Solve:
a. 5/12 = x/8
Use a proportion to answer:
a. If a traveler's bags weighed 39 kilograms and 50 kilograms is equivalent to 110 pounds, how many pounds does the bag weigh rounded to the nearest pound?
Find the missing coordinate to complete the ordered-pair solutions to the given linear equivalent.
y = 6x +5 5x-2y = 9
(a) (0,?) (a) (7,?)
(b) (3,?) (b) (?,-7)
Find the slope and the y-intercept.
a. 7x + 3y = 4
Write the equation of the line in slope-intercept form.
a. m = 5, y-intercept (0,-6)
b. The equation of a line is y = 3/5 x - 5
What is the slope of a line parallel to it?
What is the slope of a line perpendicular to it?
a. Find the domain and range of the relation. b. Determine whether the relation is a function.
{ (5.6,8), (5.8,6), (6,5.8), (5,6) }
{ (85,3), (95,11), (110,15), 110,20) }
Given the following functions, find the indicated values.
f(x) = 3 - 5x
(a) f(-1) (b) f(1) (c) f(2)
Click here to see answer by stanbon(57290) |
Question 75026: mary ordered lunch for herself and several coworkers on Monday and tuesday. On monday she paid $7.00 for five sandwiches and four sodas. On tuesday, she paid $6.00 for four of each. Find the price of a sandwich and the price of a soda.
Click here to see answer by checkley75(3666) |
Question 74953: Elizabeth has a collection of bugs. all of them are either fruit flies or tarantulas. she has a total of 75 bugs. altogether they have a total of 562 legs. how many fruit flies and tarantulas does she have? justify your answer.
Click here to see answer by ptaylor(2048)  |
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