Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Question 1199801: Simplify the following algebraic fraction :
(a^2-3a-4)/(a^2-4) x (2-a-a^2) /(a^2-1)
answer: (4-a)/(a-2)
how is this worked out ?

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Question 1200051: Use the given graphs of the function f (in blue) and g(in red) to find the following limits.
Link to function: https://postimg.cc/PNTMkWJx
1. lim (as x approaches 1) [f(x) + g(x)]
2. lim (as x approaches -1) (sqrt (3+f(x))

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Question 1200201: a boy sells twice as many student tickets as he does adult tickets. if he sells 99 tickets in all, how many of each does he sell?
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Question 1200200: A bottle filled with varnish cost $1.10. if the varnish alone is worth $1.00 more than the bottle, find the value of the bottle.
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Question 1200200: A bottle filled with varnish cost $1.10. if the varnish alone is worth $1.00 more than the bottle, find the value of the bottle.
Click here to see answer by ikleyn(52832) About Me 

Question 1200198: two boys scouts sold 36 apples. if one sold twice as many as the other, how mnay did each sell?
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Question 1200199: a man left an estate valued at $84000 to be divided so that his wife received 3 times as much as each son. if there were 4 sons, how much did each person receieved?
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 1200202: a copper wire measures 85 cm in length and is cut into 2 pieces. if the shorter piece is 5cm shorter than the other piece, find the length of each piece.
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Question 1200203: find three numbers in which the second is 20 more than the first and the third is 5 less twice the first. their sum is 255.
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Question 1200203: find three numbers in which the second is 20 more than the first and the third is 5 less twice the first. their sum is 255.
Click here to see answer by josgarithmetic(39623) About Me 

Question 1200204: the sum of three numbers is 478. the second number is 3 times and the third number is 52 less than the first. what are the numbers?
first numeber ___
second number ___
third number ___

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Question 1200205: mrs jones spent $17 making three purchases at the store. she paid twice as much less $5 for the second item as she did the first and three times as much plus $4 for the third as she did for the first. how much did each item cost?
first item____
second item____
third item____

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Question 1200207: Alan multiplies a 4-digit number by 36. How can you tell the number of partial products Alan will have?
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Question 1200207: Alan multiplies a 4-digit number by 36. How can you tell the number of partial products Alan will have?
Click here to see answer by ikleyn(52832) About Me 

Question 1200215: mrs jones spent $71 making three purchases at the store. she paid twice as much less $5 for the second item as she did the first and three times as much plus $4 for the third as she did for the first. how much did each item cost?

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Question 1200252: Find b if A = 27; h = 6
A= 1/2bh

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Question 1200261: 9 more than the product x and 5

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Question 1200334: Find S if A = 36.25; L = 2.5
A=2LS+L^2

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Question 1200341: Find h if V = 13,860; l = 36; w = 22
V = lwh

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Question 1200340: Find C if F = 80
F=9/5C+32

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Question 1200333: Find L if P = 36; W = 13
P = 2L + 2W

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Question 1200337: Find V if h = 45; R = 7; r = 5
V= 1/3 3.14h (r^2 + Rr + r^2)

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Question 1200339: Find m if Q=320; s=10; T1=58; T2=42
A=m(t1-t2)s

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Question 1200336: Find h if V = 210; r = 3.5
V= 3.14r^2h

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Question 1200335: Find h if V = 3780; B = 12; b = 3
A= 1/3h(b^2 + Bb + b^2)

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Question 1200335: Find h if V = 3780; B = 12; b = 3
A= 1/3h(b^2 + Bb + b^2)

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Question 1200332: Find h if A = 39; a = 4; b = 9
A= 1/2h(a+b)

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Question 1200332: Find h if A = 39; a = 4; b = 9
A= 1/2h(a+b)

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Question 1200331: Find A if r = 3; s = 7
A=1/2 3.14rs + 3.14r^2

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Question 1200437: The second of two numbers is 11 les than 5 times the first. if three times the first plus the second equals 53. find the numbers
Click here to see answer by josgarithmetic(39623) About Me 

Question 1200436: there were 16 000 people at a hockey game. for tickets some paid $10 & other paid $4. The total of receipts were $100 000. How many of each were sold?


Click here to see answer by Theo(13342) About Me 
Question 1200436: there were 16 000 people at a hockey game. for tickets some paid $10 & other paid $4. The total of receipts were $100 000. How many of each were sold?


Click here to see answer by ikleyn(52832) About Me 
Question 1200436: there were 16 000 people at a hockey game. for tickets some paid $10 & other paid $4. The total of receipts were $100 000. How many of each were sold?


Click here to see answer by greenestamps(13203) About Me 

Question 1200952: Two consecutive numbers are represented by x and x + 1 if 6 is added to the first number and 2 is subtracted from the second number, the quotient of the new number is 9/2. determine the numbers algebraically.

Click here to see answer by ikleyn(52832) About Me 
Question 1200952: Two consecutive numbers are represented by x and x + 1 if 6 is added to the first number and 2 is subtracted from the second number, the quotient of the new number is 9/2. determine the numbers algebraically.

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Question 1201140: Evaluate the expression when n=-4.
n^2+9n-8

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Question 1201139: Evaluate the expression when n=-4.
n^2+9n-8

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Question 1201314: Please help with: 4w^11-w^12 in standard form
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Question 1201314: Please help with: 4w^11-w^12 in standard form
Click here to see answer by math_tutor2020(3817) About Me 

Question 1202503: a^2b-b^2, when a = 3 and b = -4
I got -20

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Question 1202502: 5x^2 - y, when x = 4 and y = 24
I got 56 as my answer.

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Question 1202507: Five times the sum of a number and 6 is 48
I got 5(x+6)=48

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Question 1202506: Three times the difference of a number and 7 is 18

I got 3(x-7)=18

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Question 1202505: The product of a number and 10, increased by 1.
I got x * 10 + 1

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Question 1202504: -y^2-3xy, when x= -4 and y = 2
I got -28

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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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840