Tutors Answer Your Questions about Linear-equations (FREE)
Question 122749: I can't seem to get this one:
Which of the ordered pairs
(3,1), (0,-4), (-4,0), (-3,-7)
are solutions for the eqation x-y=4?
A) (-4,0) and (-3,-7)
B) (3,1) and (-4,0)
C) (0,-4),(-4,0), and (-3,-7)
D) (0,-4) and (-3,-7)
Click here to see answer by checkley71(8403) |
Question 122669: Sienna put some money in a certificate of deposit earning 4.2% simple interest. She deposited twice that amount in a money market account paying 4%simple interest.After one year her total interest was $488. How much did Sienna deposit in her money market account?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 122693: A small company produces both standard and deluxe playhouses. The standard playhouses take 12 hours of labor to produce and the deluxe playhouses takes 20 hours. The labor available is limited to 800 hours per week and the total production capacity is 50 items per week. Existing orders require the company to produce at least 10 standard playhouses and 15 deluxe playhouses per week. Write a system of inequalities representing this situation, where x is the number of standard playhouses and y is the number of deluxe playhouses. Then graph the system of inequalities.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 122909:
at maximum speed, an airplane traves 2700 miles against the wind in 6 hours. Flying with the wind, the plane can travel the same distance in 5 hours.
Let x be the maximum speed of the plane and y be the speed of the wind. What is the speed of the plane with no wind?
Click here to see answer by checkley71(8403) |
Question 123006: 3 2
Given f(x) = –x – 2x + 3x – 9, find f(–2), f(0), and f(1). I have been trying to work this out but do not know if I am working it correctly. Thanks
( Idid not know how to post it correctly but the three is supposed to be above the x and the 2 is supposed to be above the the y)
Click here to see answer by checkley71(8403) |
Question 123006: 3 2
Given f(x) = –x – 2x + 3x – 9, find f(–2), f(0), and f(1). I have been trying to work this out but do not know if I am working it correctly. Thanks
( Idid not know how to post it correctly but the three is supposed to be above the x and the 2 is supposed to be above the the y)
Click here to see answer by jim_thompson5910(35256) |
Question 123052: The base of an isosceles triangle is 12in, less than the length of the equal sides. If the perimeter of the triangle is 39in., find the length of each of the sides.
Answer 17 for each side and 5 for the base. Please explain.
Click here to see answer by rapaljer(4671)  |
Question 123057: Ching leaves San Fransisco and travels toward Los Angeles at 50mi/h. An hour later, Phil leaves Los Angeles and travels toward San Francisco at 60mi/h. If the two cities are 380 miles apart, how many hours will it take for Ching to meet Phil?
Click here to see answer by checkley71(8403) |
Question 123153: Hi,
Here is the question: The points graphed on the grid below satisfy which of the following equations?
(0,1), (-1,0), (-2,-1)
the possible solutions are:
x-y=1
x-y=-1
2y-x=0
x=0
y=0
I totally don't remember how to do this, can you help?
Click here to see answer by solver91311(24713)  |
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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, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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