ZeHanz
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I'm a high school maths teacher from Holland.
I like to help people with maths questions! Many times I learn from it too, because the topics from all over the world are more varied than those from my country alone.
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Questions Answered
xhesino:
prove that 2^n>n for every n
with mathematical induction
updated 5 days ago
20 replies
No Medals Yet
Mathematics
yoitsren:
find exact value: inverse tan(tan 7pi/4). Medal to whoever can help describe the steps. Im not good at solving the radians.
updated 23 days ago
2 replies
1 Medal
Mathematics
hotgurl72:
Consider the extremely large integers x = 2X3X5X7X11X13X17X19X23X29 and y = 29X31X37X41X43X47X53X59X61X67. What is the greatest common divis…
updated 23 days ago
12 replies
1 Medal
Mathematics
Semperfi:
10,000,000,000 =
1010
…
updated 23 days ago
6 replies
No Medals Yet
Mathematics
Semperfi:
A kilobyte is 210. A megabyte is 220 bytes. How many kilobytes are in a megabyte? Use the exponent rule for division to find your answer an…
updated 23 days ago
3 replies
No Medals Yet
Mathematics
wildfire95:
find he series shown
∑n=3∞(2n+5)
these r the choices:
…
updated 23 days ago
5 replies
1 Medal
Mathematics
jamainehouston:
Rational root theorem find all roots 3x^3-13x^2+13x-3
updated 24 days ago
2 replies
No Medals Yet
Mathematics
cordell10:
How many millimeters are in 90 centimeters?
updated 24 days ago
4 replies
No Medals Yet
Mathematics
tori22:
solve ∫e^-x(cosx)dx
updated 25 days ago
2 replies
No Medals Yet
Mathematics
tori22:
Find the indefinite integral (xe^x)dx
updated 25 days ago
22 replies
1 Medal
Mathematics
Pilot26:
verify the idenity? (acost-bsint)^2+(asint+bcost)^2=a^2+b^2
updated 25 days ago
12 replies
1 Medal
Mathematics
mason22:
Help please what's the factored form of the expression w^2 + 12w + 36
updated 25 days ago
2 replies
1 Medal
Mathematics
kellyjo86:
Evaluate the following. Answers must be in EXACT VALUES!!!
sin^(-1)(sin〖-135°〗 )
…
updated 25 days ago
21 replies
1 Medal
Mathematics
yomylola:
please help
Rewrite 1−cos135 sin135 using a half-angle identity.
updated 25 days ago
13 replies
1 Medal
Mathematics
Itzrosey:
What are the next two terms to the following sequence... 1, 5, 9
updated 25 days ago
5 replies
1 Medal
Mathematics
MiaKitty1:
Can someone create for me an exponential function that increases gradually? :)
updated 25 days ago
13 replies
2 Medals
Mathematics
Jayclaw:
I got the answer for x^2/4 + 4=0 but the answer was
4i, 4i what does that mean?
updated 25 days ago
3 replies
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Mathematics
RolyPoly:
Why do we use radian instead of degree in "higher mathematics", for example, in calculus?
updated 25 days ago
9 replies
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Mathematics
Sandsand22:
A region R is enclosed by the coordinate axes and the graph of y=k(x-5)^2, k>0. When this region is revolved around the x-axis, the solid fo…
updated 26 days ago
30 replies
2 Medals
Mathematics
rhenry:
How do you disprove the following: If x squared equals 5x then x=5
updated 26 days ago
12 replies
2 Medals
Mathematics
Greytears:
I gotta go to a wedding in like less than 16 mins and I'm stuck on homework. :(
HELP PROVE:
(cscx(cosx+sinx)^2)/1+sin2x = cotx/cscx
updated 26 days ago
7 replies
1 Medal
Mathematics
marta17:
9^lnx-4*3^lnx+1 + 27=0
updated 26 days ago
5 replies
No Medals Yet
Mathematics
katieeeeeeee:
Given the set {A, B, C}, how many permutations and combinations are there of this set of 3 objects taken 2 at a time?
updated 26 days ago
13 replies
1 Medal
Mathematics
Shenell1:
I need help with algebra.
updated 26 days ago
4 replies
No Medals Yet
Mathematics
dg98:
Trig equations: find solutions of 3sin^2x-sinx-2=0 in the interval [-pi,pi]. what does the interval mean?! I know how to do the equation par…
updated 26 days ago
5 replies
1 Medal
Mathematics
krackhead992:
tan(sin^-1(-5/13))
updated 26 days ago
10 replies
No Medals Yet
Mathematics
laniraegreen:
help! calculus question
updated 26 days ago
9 replies
4 Medals
Mathematics
katieeeeeeee:
A deer is born with the ability to smell predators better than the other deer in its population. As a result, this deer has several seconds …
updated 27 days ago
5 replies
1 Medal
Mathematics
September1620:
Could someone please explain to me how they got this answer?
(√2/2)/(1+√2/2) = √2/(2+√2)
updated 27 days ago
7 replies
No Medals Yet
Mathematics
katieeeeeeee:
Which of the following examples likely occurred through natural selection?
updated 27 days ago
8 replies
2 Medals
Mathematics
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