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Tutors Answer Your Questions about real-numbers (FREE)
Question 200589: somebody said the solution for:squareroot of negative w, then subracting 6=w is negative 4 and negative 9.Then he said we take negative 9 because the squareroot of 9 (after substituding w with -9) is -3.I am confussed.please explain this to me.
Click here to see answer by rfer(16322)  |
Question 200588: somebody said the solution for:squareroot of negative w, then subracting 6=w is negative 4 and negative 9.Then he said we take negative 9 because the squareroot of 9 (after substituding w with -9) is -3.I am confussed.please explain this to me.
Click here to see answer by RAY100(1637) |
Question 201575: New Worth. Melanie's house is worth $125,000.00, but she still owes $78,422 on her mortgage, She has $21,236 in a savings account and has $9477 in credit card debt. She owes $6131 to the credit union and figures that her cars and other household items are worth a total of $15,000.00. What is Melanie's new worth?
I really have no clue and am getting answers from different ppl I just want to know how to do this question so i can move on so it will give me an example on the questions I DO need to do thank you
Click here to see answer by Earlsdon(6294) |
Question 202112: Can anyone help me with ANY of these problems? Please!
1. Change 0.0555... to fraction form.
= ____
2. Simplify. The square root of 15 over the square root of 5 = _____
Solve the following problems for the roots.
3.
(the square root of 4x+5) = 3 + (the square root of 2x-6)
x= ___ and ___
4.
x^2 + 10x + 25 = 16
x= ___ and ___
5. Solve for the roots by factoring.Leave answer as an improper fraction.
(2x^2) - x = 21
x= ___ and ___
6. Solve for the roots by completing the square.
(3x^2)- 12x = 9
x= ____________
7. Solve for the roots using the quadratic formula. Leave answer as an improper fraction.
3x^2 + 11x - 4 = 0
x= ___ and ___
8. Solve for the roots using the quadratic formula.
2(6-x) = x(x+5)
x= ___________
9. Use the given equation and associated roots to perform the following exercise.
3x^2 + 11x - 4 = 0 and root1 = - 4 , root2 = (1/3)
Identify a, b, and c. (Hint: you may have to arrange the equation in the form ax2 + bx + c = 0.)
a =__ b = __ c = __
10. Use the given equation and associated roots to perform the following exercise.
3x^2 + 11x - 4 = 0 and root1 = - 4 , root2 = (1/3)
The value of the fraction below will be: -b/a
=___/____
11. Use the given equation and associated roots to perform the following exercise.
3x^2 + 11x - 4 = 0 and root1 = - 4 , root2 = (1/3)
root1 + root2 = -4 + (1/3)= ______
12. Use the given equation and associated roots to perform the following exercise.
3x^2 + 11x - 4 = 0 and root1 = - 4 , root2 = (1/3)
The sum of the roots is the same as: ___ /___
13. Use the given equation and associated roots to perform the following exercise.
3x^2 + 11x - 4 = 0 and root1 = - 4 , root2 = (1/3)
c/a = ___ /___
14. Use the given equation and associated roots to perform the following exercise.
3x^2 + 11x - 4 = 0 and root1 = - 4 , root2 = (1/3)
root1 x root2 = (-4) x (1/3) = ____
15. Use the given equation and associated roots to perform the following exercise.
3x^2 + 11x - 4 = 0 and root1 = - 4 , root2 = (1/3)
The product of the roots is the same as: ____ /____
16. Use the discriminant to determine the nature of the roots of the following equation.
y^2 - 5y - 3 = 0
Which best fits?
Double root
real and rational root
real and irrational root
imaginary root
17. Use the discriminant to determine the nature of the roots of the following equation.
x^2 + 2x + 5 = 0
Which best fits?
Double root
real and rational root
real and irrational root
imaginary root
18. Simplify the following algebraic expression, using " i" in the final answer.
The square root of 12 / the square root of -6 = the square root of ___ /___
19. Simplify the following algebraic expression.
(2 + the square root of -3 / 2) (2 - the square root of -3 / 2)
= _________
Click here to see answer by rfer(16322) |
Question 202293: Classify the given numbers as real and rational, real and irrational, or complex. Justify your answer. Remember you may need to simplify BEFORE you classify!
1. (3)1/2 + 2i
2. 3.14
3. π
4. (16)1/4 + 6
5. (18)1/3
6. 1/6
7. 6i
8. 3 – (-9)1/2
Click here to see answer by solver91311(24713)  |
Question 203104: -25, -28/7, -18/5, -Pi, -0.763, -0.333..., 0, 1/10, 2/7, Pi/4, sqrt3, 9, 52.8, 283/5
From the above list, list all the irrational numbers.
I think that -Pi is one of them?
Click here to see answer by solver91311(24713) |
Question 206081: An example of the sum of two irrational numbers may be and irrational number?
An example the sum of two rational numbers may be a rational number?
An example the product of two irrational numbers may be an irrational number?
An example thr product of two irrational numbers may be a rational number?
Please, as I'm stuck on these questions
Click here to see answer by jim_thompson5910(35256) |
Question 207766: identify the sets of nunbers to which each givin number belongs.
-2.7
choices: rational munbers
irrational numbers
whole numbes, integers, rational numbers
natural numbers, whole numbers, integers, rational numbers
Click here to see answer by rapaljer(4671)  |
Question 208019: please help me in this problem:(integers)
evaluate each expression.
1) -3{2(15-5)-(-7-8)}
2) {4(-11-7)+9}+5(5-9)
3) {41-7(9-4)}-{3(9)-1}
4) 2{-5+3(4-5)}
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-4
5) 6{2-(-6+2)}+20
----------------
2(5-6)
6) 9+3{5-6(1+4)}
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3+8(7-6)
7) 4(5)+6-6{3-3(4)}
------------------
1-3(5-2)
8) 4(-2+7)-7{5-(7+4)}
Click here to see answer by Edwin McCravy(20054)  |
Question 209256: the sum of a positive and negative number is 0 _________.
the quotient formed by any nonzero number divided by 0 is __________, and the quotient formed by 0 divided by any nonzero is __________.
i have to show an example of the two questions also.
Click here to see answer by RAY100(1637) |
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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
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