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Post New Question
All Questions
^{+0}
136099 Questions
0
272
1
HELP ASAP PLEASE!
Find all complex numbers $z$ such that \[ |z|^2-2\bar z+iz=2i. \]
Alan
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Guest
Jan 18, 2018
0
147
1
+435
help
Meyer rolls two fair, ordinary dice with the numbers on their sides. What is the probability that AT LEAST one of the dice shows a square number?
Scruffy23.
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SmartMathMan
Jan 18, 2018
0
573
1
+284
15. Drag and drop an answer to each box to correctly complete the proof.
15. Drag and drop an answer to each box to correctly complete the proof.
Given: m∥nm∥n , m∠1=65∘m∠1=65∘ , m∠2=60∘m∠2=60∘ , and BD−→−BD→ bisects ∠ABC∠ABC .
Prove: m∠6=70∘
read more ..
hectictar
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sii1lver
Jan 18, 2018
0
170
1
+284
PLEASE PLEASE HELP
What are the coordinates of the midpoint of the segment whose endpoints are A(−3, −5) and B(2, 7) ?
Enter your answer, as decimals, in the boxes. You will need a "0" in front of the decimal point for one
read more ..
hectictar
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sii1lver
Jan 18, 2018
0
146
2
+644
help
Find all integers x for which there exists an integer y such that 1/x + 1/y = 1/7
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waffles
Jan 18, 2018
0
185
0
+644
Determine a constant k such that the polynomial P(x, y, z) = x^5 + y^5 + z^5 + k(x^3+y^3+z^3)(x^2+y^2+z^2) is divisible by x+y+z .
Determine a constant k such that the polynomial P(x, y, z) = x^5 + y^5 + z^5 + k(x^3+y^3+z^3)(x^2+y^2+z^2)
is divisible by x+y+z .
waffles
Jan 18, 2018
0
223
1
+644
In this multi-part problem, we will consider this system of simultaneous equations: 3x+5y-6z =2, 5xy-10yz-6xz = -41, xyz = 6. Let a=3x,
In this multi-part problem, we will consider this system of simultaneous equations:
3x+5y-6z =2,
5xy-10yz-6xz = -41,
xyz = 6.
Let a=3x, b=5y and c=-6z . <#> Determine the monic cubic polynomial in terms of a variable
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waffles
Jan 18, 2018
0
150
0
+644
If (x,y) satisfies the simultaneous equations 3xy - 4x^2 - 36y + 48x = 0, x^2 - 2y^2 = 16,
If (x,y) satisfies the simultaneous equations
3xy - 4x^2 - 36y + 48x = 0,
x^2 - 2y^2 = 16,
where x and y may be complex numbers, determine all possible values of y^2 .
waffles
Jan 18, 2018
0
309
1
+644
Factor x^2+y^2-z^2)^2-4x^2y^2 as the product of four polynomials of degree 1 , each of which has a positive coefficient of x.
Factor x^2+y^2-z^2)^2-4x^2y^2 as the product of four polynomials of degree 1 , each of which has a positive coefficient of x.
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waffles
Jan 18, 2018
0
328
1
NEED HELP ASAP!
For what constant $k$ is 1 the minimum value of the quadratic $3x^2 - 15x + k$ over all real values of $x$? ($x$ cannot be nonreal)
hectictar
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Guest
Jan 18, 2018
+2
154
5
+246
a cool challenge for you guys!
in your head, work out the APPROXIMATE square root of 165 up to two decimal places OR give the remaining decimal fraction.
eg. for 137 i would accept 11.73 or 11+8/11 or even 129/11 if you will.
read more ..
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Scruffy23.
Jan 18, 2018
0
281
1
Answer question
A railroad crew can lay 7 miles of track each day. They need to lay 196 miles of track. The length, L (in miles), that is left to lay after d days is given by the following function.
=Ld−1967d
read more ..
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Guest
Jan 18, 2018
Jan 17, 2018
0
104
0
How do I find the range of a given domain? Reply ASAP please
How do I find the range of a given domain?
Example:
f(x) = 3x+1{-2.-1,0}
Guest
Jan 17, 2018
0
77
0
Please help asap
A mathematician works for $t$ hours per day and solves $p$ problems per hour, where $t$ and $p$ are positive integers and $1
Guest
Jan 17, 2018
0
83
0
+4
Help me please! A trigonometric question
If sinA+sinB=2sin(A+B) then prove, tan(A/2).tan(B/2)=1/3
Muhammad.Arif
Jan 17, 2018
0
110
1
Compute $|5-12i| + |3-4i|$.
Compute $|5-12i| + |3-4i|$.
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Guest
Jan 17, 2018
0
64
0
Please help- Range given domain
How do I find the range of a given domain?
Example:
f(x) = 3x+1{-2.-1,0}
Guest
Jan 17, 2018
0
163
2
Please help
A rectangle is called ``cool'' if the number of square units in its area is equal to twice the number of units in its perimeter. A cool rectangle also must have integer side lengths. What is the sum of all the different possible areas of cool rectangles?
read more ..
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Guest
Jan 17, 2018
0
366
1
+284
Which description best defines FG¯¯¯¯¯ ?
Which description best defines FG¯¯¯¯¯ ?
the set containing point F and point G
the set of all points that are the same distance from point F as point G
the set of all points between point F and
read more ..
hectictar
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sii1lver
Jan 17, 2018
0
116
1
Slopes
Use an equation to find the value of k so that the line that passes through the given points has the given slope.
(1,3), (5,k); m=2
hectictar
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Guest
Jan 17, 2018
0
113
1
Question
A beam of light travels from sapphire into an unknown material. The angle of incidence is 45o and the angle of refraction is 57o. What is the refractive index of the unknown material? What material is this likely to be?
off-topic
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Guest
Jan 17, 2018
0
149
1
Determine the refractive index of a medium if the speed slows to 1.2 x 108 m/s
Determine the refractive index of a medium if the speed slows to 1.2 x 108 m/s
Use this form:
Given:
required:
read more ..
off-topic
ElectricPavlov
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Guest
Jan 17, 2018
0
130
1
Optics question
Eugene is given a clear material to identify. He shines a laser at the surface of the material at an angle of 25o. The angle of the refracted ray is 16.7o. Identify the clear material. Show how you arrived at this answer using
Given:
read more ..
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Guest
Jan 17, 2018
0
112
1
+558
What are the solutions to the equation?
What are the solutions to the equation?
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SamJones
Jan 17, 2018
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