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

Tutors Answer Your Questions about real-numbers (FREE)

Question 977285: Find the number of the subsets of the set {11,12,13}. Please solve, showing work. Thank you.
Click here to see answer by Alan3354(69443)

Question 977369: Which are the four consecutive numbers whose sum is 45
Click here to see answer by josgarithmetic(39614)

Question 977369: Which are the four consecutive numbers whose sum is 45
Click here to see answer by MathTherapy(10549)

Question 977401: There are 627 students taking college algebra or calculus. 417 are taking college algebra, 261 are taking calculus, 51 are taking both algebra and calculus. Ho many are taking algebra but not calculus. Please solve and show work. When I solved my answer was 105, but I am not certain. Thank you.
Click here to see answer by Edwin McCravy(20054)

Question 977403: A survey of 220 families showed that 83 had a dog, 64 had a cat, 28 had a dog and cat, 84 had neither a dog nor a cat nor a parakeet, 6 had a dog, cat and parakeet. How many only had a parakeet. please solve, and I am confused. Thank you.
Click here to see answer by Edwin McCravy(20054)

Question 977435: What is the answer of this A ∩ D? in number not letters thankyou.
Click here to see answer by Fombitz(32388)

Question 977556: 7=7
Click here to see answer by Fombitz(32388)

Question 977664: Find all real zeros of the function y=x^3 - 2 x^2 - 25 x +50.
Click here to see answer by ikleyn(52760)

Question 977719: Please solve this question. ( √�squ-3)squ5.
Click here to see answer by Alan3354(69443)

Question 977739: Ok..Nascar speeds on slower speedsways, some nascar drivers reach average speeds of 2 miles per minute. Write a formula that gives the number of miles M that such a driver would travel in x minutes. Howw far would this driver travel in 42 minutes?
Click here to see answer by Cromlix(4381)

Question 978016: I can't answer my activity. Please help me. Thank you so much in advance!!
a. 2 (-15) - (-5)
b. [-4(3)] � [2(9)]
c. -(-2)2� - (-√4)� - 2(-3�) - (-1)�
Click here to see answer by MathLover1(20849)

Question 978072: Hi! I can't answer the other question of my activities. Can you help me?
a. - 4 - 11 + 18
b. - 6� � (4.3)
Thank you in advance!!
Click here to see answer by Alan3354(69443)

Question 978191: can you please help me out by finding the value of the square root of 8 up to five
decimal places by long method and thank you
Click here to see answer by Edwin McCravy(20054)

Question 979100: Not sure how to handle this one... I don't know what to do to undo it.
(x-4)/2 +6 = -12
Click here to see answer by Alan3354(69443)

Question 979100: Not sure how to handle this one... I don't know what to do to undo it.
(x-4)/2 +6 = -12
Click here to see answer by josmiceli(19441)

Question 979357: i need help with everything to be honest

Click here to see answer by Alan3354(69443)

Question 980546: "Police arrive at a murder scene at 3:00 AM and record the bodes temperature which was 93F. aT 4:00 AM, after inspecting and fingerprinting the area, they again took the temperature of the body which dropped to 82F. The temperature of the crime scene has remained at a constant 71F. Determine when the person was murdered. Assume that the temperature of the body at the time of death was 98.6F."
-the person was murdered at: am/pm

i really need any help for this problem, i have no idea how to solve to get the final answer.

Click here to see answer by macston(5194)

Question 980673: Find a rational number between -2/3 and 1/4.
Find a ration number between -2 and 6.
Click here to see answer by Alan3354(69443)

Question 982192: Please help me solve this. Thank you!
If x=2+sqrt(3) and y= 2-sqrt(3) then solve:
x^4+y^4
The answer that i got was 180-12sqrt(3) but i don't think that is correct.

Click here to see answer by josgarithmetic(39614)

Question 982364: what is algebra?what are rational,irrational,integers,compund no.,prime no.,co prime no.? what is factorization?
Click here to see answer by Alan3354(69443)

Question 982482: Please help me solve this:
rewrite the following square roots when x<-3
1) (The ^2's are supposed to be inside of the sqrt and some for the other question)
2)
Thank you so much!!
Click here to see answer by Alan3354(69443)

Question 982738: Hi how do you solve this answers.Could you help me please
Click here to see answer by Alan3354(69443)

Question 982828: f(x)=-2x^2+5x+2
find the min and max values
Click here to see answer by josgarithmetic(39614)

Question 982828: f(x)=-2x^2+5x+2
find the min and max values
Click here to see answer by MathTherapy(10549)

Question 982799: Numbers Between 0 and -4
Click here to see answer by Alan3354(69443)

Question 983284: Hi, I don't get why isn't +/-3, the correct answer is 3.
Could you explain why? Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 983284: Hi, I don't get why isn't +/-3, the correct answer is 3.
Could you explain why? Thanks!
Click here to see answer by KMST(5328)

Question 983154: fWkYqL http://www.FyLitCl7Pf7kjQdDUOLQOuaxTXbj5iNG.com
Click here to see answer by Fombitz(32388)

Question 983613: The numbers of nickels in a bank are in the ratio 23:25. If the coins are worth $7, how many of each type are there?
Click here to see answer by Alan3354(69443)

Question 983662: 6 square + 32
Click here to see answer by rfer(16322)

Question 983896: A cabinet door in the shape of a square covers five square feet. Find the length of the side of the door to the nearest integer.
Click here to see answer by macston(5194)

Question 984011: Name the set(s) of numbers to which -2/5 belongs?
Click here to see answer by Fombitz(32388)

Question 984259: Is 1.4242242224... A natural number, whole number, interger, rational number, or irrational number ?
Click here to see answer by solver91311(24713)

Question 984619: What is the smallest five digit number which is divisible by 7 as well as 13?
Click here to see answer by Fombitz(32388)

Question 984729: Is -6 irrational, real number, an integer.

Click here to see answer by josgarithmetic(39614)

Question 984867: Consider the set {-6,-2/3,0,√2,2.6,π,5}
Which numbers are intergers?
Which numbers are real numbers?
Which numbers are rational numbers?
Click here to see answer by solver91311(24713)

Question 984915: Hello. Express each no. As a quotient of two integers
10.21...
5.123...
0.5 325..
15.05
0
Click here to see answer by macston(5194)

Question 984945: (1.10)^5
Please Give Steps
& ans for this Equation.
Click here to see answer by Alan3354(69443)

Question 985339: What are the real roots of this equations?
(3+x)2(x+7)(x-2)4=0
(x+8)(x-7)(x^2-2x+5)=0
x^2(x-9)(2x+1)=0
(x+4)(x^2-x+3)=0
(x+1)(x-3)=0
Click here to see answer by Boreal(15235)

Question 985439: find the quotient of -74 and -3/5
Click here to see answer by stanbon(75887)

Question 985527: Can you help me with my math question? Ray planted a square garden that covers an area of 200ft squared.how many feet of fencing dose he need to surround the garden? I would love to have you help with this question.
Click here to see answer by macston(5194)

Question 985888: Repeating decimals(Multiplication and division) work out by steps please
(a.)o.333...x6/7
(b.)0.888...divided by 2/9
)c.) 0.2727...x 8/11
(d.) 0.1212.. divided by 5/3
Click here to see answer by Alan3354(69443)

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