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Post New Question
All Questions
+0
230450 Questions
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673
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+23
help please!
From generation to generation, the mean age when smokers first start to smoke varies. However, the standard deviation of that age remains constant of around 2.1 years. A survey of 40 smokers of this generation was done to see if the mean starting age is
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hiya12345
Apr 14, 2019
0
709
3
+51
Geometry Proof Help
Could one of this site's math Wizards please help me with this. The teacher wants me to make a 2 column proof that proves this and I am kind of
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OkNietzsche
Apr 14, 2019
0
426
1
Fraction question
How do you simplify 10 22/24 ?
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Guest
Apr 14, 2019
0
607
1
Problem of the Week: Lettuce for Sale
On Monday, the produce manager stocked the display case with eighty heads of lettuce. By the end of the day some of the lettuce had been sold.
On Tuesday, the manager surveyed the display case and counted the number of heads of lettuce
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Guest
Apr 14, 2019
+1
670
1
+1242
How did -3i\bar{z} become -3b-3ia?
How did become -3b-3ia? When I expanded it, I got ?
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Lightning
Apr 14, 2019
+1
830
2
+1242
Help!
Determine the complex number satisfying the equation i.
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Lightning
Apr 14, 2019
0
550
1
Help
Let $z$ be a complex number such that z^5 + z^4 + 2z^3 + z^2 + z = 0. Find all possible values of |z|.
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Guest
Apr 14, 2019
-1
857
1
+34
Yeet
Square ABCD has side length 7. What is the length of the diagonal AC?
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ColtPatterson
Apr 14, 2019
0
672
1
help
Let . If is a polynomial in such that for all , then find .
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Guest
Apr 14, 2019
0
514
1
I really need help on question number 13!!!
This is a geometry find the area question so I attached a link to the pdf where I got it from it's number 13 on page 2 chapter 11
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Guest
Apr 14, 2019
0
819
1
+1242
Help!
Determine the complex number z satisfying the equation . Note that denotes the conjugate of z.
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Lightning
Apr 14, 2019
+1
769
2
+322
Integrals
f' ''(x)= 5 + cos(x) , f(0) = -1 , f(9pi/2) = 0
Find f(x).
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Ruublrr
Apr 14, 2019
0
722
1
+1242
I got \sqrt{1/4+r^2}?
Let r be a real number, |r| < 2, and let z be a complex number such that Find |z|.
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Lightning
Apr 14, 2019
0
719
1
Suppose a game of 3-D tic tac toe...
Suppose a game of 3-D tic tac toe is played on a 6 by 6 by 6 cube. How many winning lines are there through the cube?
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Guest
Apr 14, 2019
0
427
1
Help with 2 questions
1) Find the square roots of 3+4i. Express each root in the form a+bi, where a and b are real numbers.]\
I got 2+i but that is incorrect can someone tell me where I went wrong?
2) What is the area of the region of the complex plane
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Guest
Apr 14, 2019
+1
623
1
+9
HELP PLEASE
Let
Find a+b if the piecewise function is continuous (which means that its graph can be drawn without lifting your pencil from the paper).
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haihaihai
Apr 14, 2019
Apr 13, 2019
0
573
2
Define the operation by . What is ?
Define the operation by . What is ?
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Guest
Apr 13, 2019
0
928
1
Please help
1) The complex numbers a and b satisfy
Find
2) Suppose z is a complex number such that z^2 = 24-32i. Find |z|.
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Guest
Apr 13, 2019
0
1420
3
The decimal expansion
The decimal expansion of 1/13 has a period of six digits. Find all primes p for which 1/p has a period of exactly four digits.
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Guest
Apr 13, 2019
0
728
3
The number 4
The number 4 can be expressed as the sum of one or more natural numbers in eight different ways if order matters:
4 1+3 2+2 3+1 1+1+2 1+2+1 2+1+1 1+1+1+1
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Guest
Apr 13, 2019
0
651
2
+218
Help
Thanks!
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Rudram592
Apr 13, 2019
0
4319
2
+422
Help
A rectangular prism with a volume of 4 cubic units is filled with cubes with side lengths of 1/3 unit. How many 1/3 unit cubes does it take to fill the prism?
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APatel
Apr 13, 2019
+1
714
4
+218
Help!
Thanks!
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Rudram592
Apr 13, 2019
0
713
1
+218
Help!
Thanks!
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Rudram592
Apr 13, 2019
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