Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!

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Question 991887: A lorry tank was 3 / 5 full of petrol, 21 litres was then added and it is now 5 / 6 full. how many litres of petrol can the tank hold?
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Question 948643: If x squared = 25, y squared = 16, and z squared = 9, what is the greatest possible value of (x+y+z) squared?
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Question 984716: 7-6 find the value of the expression & name the set of numbers
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Question 989856: According to the nutrition information given, one serving of total cereal contains 23 grams of carbohydrates. If one serving is 3/4 cup, what amount of carbohydrates is contained in 2 1/4 cups of total cereal ?
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Question 994798: trina has 2 brothers.one brother is 7 years older than her and other is 7 yrs younger than her.the product of her brothers age is 95.solve equation for 'x' if 'x' repreents trinas age

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Question 1045108: Suppose on September 29,2008, a stock fell a record 805.74 points. On October the same stock gained a record 934.40 points. The real number that corresponds to the stock falling a record 805.74 points is
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Question 965505: -2x^2(x^2-2)+4^3
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Question 948047: find the real solutions of the equation. x^(2/5)-3x^(1/5)-4=0
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Question 948047: find the real solutions of the equation. x^(2/5)-3x^(1/5)-4=0
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Question 948614: Write the following rational numbers in the form a/b,where a and b
0.111111,
3.222 222
0.431 431
0.166 6666
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Question 948614: Write the following rational numbers in the form a/b,where a and b
0.111111,
3.222 222
0.431 431
0.166 6666
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Question 948046: write the expression in the standard form a+bi: 2i^15-i^7.
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Question 948046: write the expression in the standard form a+bi: 2i^15-i^7.
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Question 948640: The sum of positive integers x and y is 123, and x/y=2. What is the value of x?
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Question 948640: The sum of positive integers x and y is 123, and x/y=2. What is the value of x?
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Question 1013032: Find the rule then complete the number pattern
2,390,000 3,400,000 4,410,000 6,430,000 _____ _____ ____
Rule:
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Question 1013032: Find the rule then complete the number pattern
2,390,000 3,400,000 4,410,000 6,430,000 _____ _____ ____
Rule:
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Question 1045362: A football team gained 8 yd on the first play. They lost 4 yd on the next play. The real number that corresponds to a gain of 8 yd is?
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Question 994159: A mason has to fit a bathroom with square marble tiles of the largest possible size .the size of bathroom is 10fit by 8fit .what would be the size in inches of the required that has to be cut and how many such tiles are required

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Question 1071757: Using each ten digits exactly once, find the two five digit numbers that have the smallest product.
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Question 1071757: Using each ten digits exactly once, find the two five digit numbers that have the smallest product.
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Question 939250: 1.) describe how to find the multiplier for an exponential decay of 15%

2.) describe how to find the multiplier for an exponential growth of 15%
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Question 943430: sqrt(x+6) + sqrt(2-x) = 4
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Question 947499: When x^3 -4x^2 + k -5 is divided by x-2, the reminder is -1. Find the value of k.
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Question 1076442: -> 6A
+CB
---------
1B7
In the correctly worked addition problem above, each of the three letters A,B,C represents a different digit and B+C = 14. What is the value of A then?
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Question 1076443: +6A
+CB
---------
1B7
In the correctly worked addition problem above, each of the three letters A,B,C represents a different digit and B+C = 14. What is the value of A then?
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Question 930489: Determine which numbers are rational or irrational?
7, square root of 3, 6.15, 1/5, 7.1438714289....., square root of 5/3, cube root of 27, and cube root of 16
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Question 974043: If a and b are irrational numbers, do you agree that a�b, ab, and b/a(with a not equal to 0) are always irrational numbers? Why?
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Question 974043: If a and b are irrational numbers, do you agree that a�b, ab, and b/a(with a not equal to 0) are always irrational numbers? Why?
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Question 927055: Let a and b be distinct real numbers for which
a/b + (a+10b)/(b+10a) = 2
Find a/b.
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Question 927055: Let a and b be distinct real numbers for which
a/b + (a+10b)/(b+10a) = 2
Find a/b.
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Question 930763: Please help me find polynomial function when zeros are given as 4, -2i
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Question 930763: Please help me find polynomial function when zeros are given as 4, -2i
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Question 922489: Find all the asymptotes, x-intercepts, and y-intercepts for the graph of the given rational function.
f(x)=5/x
vertical asymptotes?
Horizontal asymptotes?
Oblique asymptotes?
x-intercept?
y-intercept?
symmetry?
Thank you!
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Question 939727: Find the biggest positive integral value that CANNOT be written as the sum of a positive composite integral value and a positive integer multiple of 42.
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Question 948665: Find the number halfway between the given numbers.
1.) -5/39 and -6/117
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Question 955596: What is the smallest positive integer with at least 100 positive integral factors?
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Question 976769: Mrs. Cruz bought 30m of cloth consisting of linen and cotton. The linen per meter was P75 while the cost of cotton per meter was P25. If the total cost of the material was P1750, how many meters of each cloth did she buy?
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Question 994831: help please. thank you
f(x)=x+8/(x+8)(x-9) , What is the domain of the real-valued function f(x)?
copy & paste the link below (to see the answer choices).
http://prntscr.com/8olvv4

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Question 962030: Dylan noticed the following house numbers on his street:203, 211, 219, 227
The house numbers follow a pattern. Which expression can be used to determine the nTH house number on his street?
A. 195+8n
B. 195n
C. 195n+8
D. 8(n+195
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Question 955606: Is there any form for this:
Irrational number X Irrational numer = Rational numer

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Question 911024: is the square root of 93 a natural number, a whole number, an integer, rational number, or irrational number?

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Question 914713: g(x)=3x*3x-8x+2 write in the form a(x+b)*x+b+2+2
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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