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Post New Question
All Questions
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230615 Questions
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355
1
complex numbers
Express (4 - 5i)(5 + 5i) in the form a + bi where a and b are integers and i^2 = -1.
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Guest
May 9, 2021
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365
1
complex numbers
If Q = 11 - 5i, E = 3 - 2i, and D = 2i, find QED.
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Guest
May 9, 2021
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343
1
plz help quick
Find a monic quartic polynomial f(x) with rational coefficients whose roots include x=1-sqrt2 and x=2+sqrt5. Give your answer in expanded form.
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Guest
May 9, 2021
0
268
3
geometry
In the figure below, isosceles triangle ABC with base AB has altitude CH = 24 cm, DE = GF, HF = 12 cm, and FB = 8 cm. find area of CDEFG
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Guest
May 9, 2021
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368
2
complex numbers
William Sydney Porter tried to perform the calculation (-3 + 4i)/(1 + 3i). However, he accidentally missed the minus sign, finding (3 + 4i)/(1 + 3i) = 3/2 - 1/2*i. What answer should he have obtained?
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Guest
May 9, 2021
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457
3
fractions
Charlie, Don and Egan had 180 stamps altogether. Charlie gave 1/3 of his stamps to Don. After that, Don gave 1/4 of his stamps to Egan. The three boys had the same number of stamps in the end. How many stamps did Charlie have at first?
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Guest
May 9, 2021
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336
1
complex numbers
Machiavelli added together 1 + 3i and 2 + 4i. What number did he get?
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Guest
May 9, 2021
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250
1
domain
What is the domain of the real-valued function f(x) = (2x - 7)/sqrt(x^2 - 5x + 1)?
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Guest
May 9, 2021
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478
1
Help please :)
If the length of arc TU is 6pi, what is the radius of the circle
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Guest
May 9, 2021
0
324
1
algebra
If f(x) = (x + 4)/(x^2 + ax + b), and f(x) has two vertical asymptotes at x = 1 and x = 2, find the sum of a and b.
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Guest
May 9, 2021
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387
1
help please
if $2^{3x} = 7$ evaluate $8^{x+1}$
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Guest
May 9, 2021
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371
2
help nows plz
What is the value of $b$ if $5^b + 5^b + 5^b + 5^b + 5^b = 625^{(b-1)}$ ? Express your answer as a common fraction.
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Guest
May 9, 2021
0
342
2
algebra
f(x) is a monic polynomial such that f(0)=4 and f(1)=-10. If f(x) has degree 2, what is f(x)? Express your answer in the form ax^2+bx+c, where a, b, and are real numbers.
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Guest
May 9, 2021
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319
2
PLEASE HELP ASAP!!! THANKS!!
(a) Let the domain of f be all reals numbers, be defined by f(x) = x - 1/x. Show that f has no inverse function WITHOUT GRAPHING/USING THE HORIZONTAL LINE TEST.
(b) Let the domain of g be (0, inf), be defined by g(x) = x - 1/x.
read more ..
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Guest
May 9, 2021
+1
455
3
+64
Please help
I have two questions
a) Meyer rolls two fair, ordinary dice with the numbers $1,2,3,4,5,6$ on their sides. What is the probability that at least one of the dice shows a square number?
read more ..
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Skykeeper42
May 9, 2021
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336
1
algebra
If 2/3*3/4*4/5* ... * n/(n+1) = 1/500, what is the sum of the numerator and denominator of the largest fraction on the left side of the equation?
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Guest
May 9, 2021
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264
1
help asap
Let f(x)=3x+2 and g(x)=ax+b, for some constants a and b. If ab=20 and f(g(x))=g(f(x)) for x=0,1,2...9, find the sum of all possible values of a.
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Guest
May 9, 2021
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401
1
48 g out of 60 g ?%
48 g out of 60 g ?%
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Guest
May 9, 2021
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377
1
Help please
A highschool is having a talent contest and will give different prizes for the bst 5 acts in the show. First place wins the most money, and each place after that wins $50 less than the previous place.
How would
read more ..
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Guest
May 9, 2021
-1
345
2
Asap math
Scott's book weighs 19 ounces. It weighs half as much as Doug's book. How many ounces does Doug's book weigh?
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Guest
May 9, 2021
+1
456
3
help
There are values A and B such that
Find A+B.
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Guest
May 9, 2021
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456
1
Find the sum of the digits of 777,777,777,777^2 - 222,222,222,223^2.
Find the sum of the digits of 777,777,777,777^2 - 222,222,222,223^2.
Thank you in advance
read more ..
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Guest
May 9, 2021
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486
1
Help Please
The life of a gas grill is 3.5 years with a standard deviation 0.35 years. What is the probability that the grill will last less than 3 years?
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Guest
May 9, 2021
+1
336
1
Asap plz
https://web2.0calc.com/questions/asap_20
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Guest
May 9, 2021
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