Tutors Answer Your Questions about Linear Algebra (FREE)
Question 466827: To celebrate a colleague's graduation, the "m" workers in an office agreed to contribute equally to a catered lunch that cost a total of "y" dollars. If "p" of the coworkers fail to contribute, what represents the additional amount, in dollars, that each of the remaining coworkers must contribute to pay for the lunch?
The answer is: (py)/ (m(m-p))
Can you please explain how they got this answer?
Click here to see answer by ccs2011(207)   |
Question 467134: There are 75 more women than men enrolled in Linden College. If there are "n" men enrolled, then, in terms of "n", what percent of those enrolled are men?
The answer is [(100n)/ (2n+75)]%
I do not understand how they got this answer.
Can you help?
Click here to see answer by stanbon(57412) |
Question 467229: QR is an arc of a circle with a center P. If the length of the arc is 6pi and the degree of the angle formed at center P is 30 degrees, what is the area of the sector PQR?
The answer is 108pi.
Please help me understand how they got this answer.
Thank you!
Click here to see answer by Big Poop(157) |
Question 467255: QR is an arc of a circle with a center P. If the length of the arc is 6pi and the degree of the angle formed at center P is 30 degrees, what is the area of the sector PQR?
The answer is 108pi.
Please help me understand how they got this answer.
Thank you!
Click here to see answer by Big Poop(157) |
Question 468996: shipping charges at an online bookstore are $4 for one book, $6 for two books and $7 for three to five books. last week, there were 6400 orders of five or fewer books, and a total shipping charges for these orders was $33,600. the number of shipments with $7 charges was 1000 less than the number with $6 charges. how many shipments were made in each category (one book, two books and three to five books)?
Click here to see answer by ccs2011(207) |
Question 470538: In the xy-plane, line "l" passes through the origin and is perpendicular to the line 4x+y=k, where k is a constant. If the two lines intersect at point (t, t+1), what is the value of t?
The answer is -4/3, but I am not sure how to get this answer? Please help.
Click here to see answer by scott8148(6628)  |
Question 470568: The Acme Plumbing Company will send a team of 3 plumbers to work on a certain job. The company has 4 experienced plumbers and 4 trainees. If a team consists of 1 experienced plumber and 2 trainees, how many different such teams are possible?
The answer is 24, but I need help understanding how they got this answer.
Click here to see answer by jorel1380(2518)  |
Question 470687: The function f is defined by f(x)=x^3 - 4x. The function of g is defined by g(x)=f(x+h)+k where h and k are constants. What is the value of hk?
Points for y=f(x)are (-1,3), (1,-3)
Points for y=g(x) are (2,1), (4,-5)
The answer is 6, but I do not understand how they came up with this answer. Please help!
Click here to see answer by MathLover1(6646)  |
Question 470978: h(t)= c-(d-4t)^2; At time t=0, an initial height of 6 feet. Until the ball hit the ground, its height in feet after t seconds was given by the function h (at the beginning of problem), in which c and d are positive constants. If the ball reached its maximum height of 106 feet at time t=2.5, what was the height in feet of the ball at t=1 ?
The answer is 70, but I do not understand how they came up with this answer....please help!
Click here to see answer by Alan3354(30993)  |
Question 470978: h(t)= c-(d-4t)^2; At time t=0, an initial height of 6 feet. Until the ball hit the ground, its height in feet after t seconds was given by the function h (at the beginning of problem), in which c and d are positive constants. If the ball reached its maximum height of 106 feet at time t=2.5, what was the height in feet of the ball at t=1 ?
The answer is 70, but I do not understand how they came up with this answer....please help!
Click here to see answer by bucky(2189) |
Question 471202: Let "x" be defined as "x" = x^2 - x for all values of x. If "a" = "a-2", what is the value of a?
Note: the "" symbol means the variable is circled.
The answer is 3/2, but I do not understand how to get this answer, please help.
Click here to see answer by MathLover1(6646) |
Question 473013: 1.) 2/3 of what number is 16?
2.) solve for m: 2/3=m/42
3.) solve for z:6=z/5.9
4.) Write the answer to the nearest tenth. 449/0.42Fill in the blank with so that the resulting inequality is true. 7/16_________0.875
Click here to see answer by rfer(12677) |
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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, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510
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