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Hannelore
Questions and answers by visitors named
Hannelore
Questions (8)
The Black Pearl has once again sailed into Port Royal and is firing its guns at the fort. The cannons atop the fort wall have
4 answers
468 views
I have two sets of coordinates:
ax, by, cz ex, fy, gz (not using numbers to keep it more generic). I have a right-handed
1 answer
412 views
What is the probability that a 10-sided die is rolled 3 times and each time the value was unique (i.e. there are no repeating
4 answers
488 views
I have two relative frequencies for the same experiment done twice. A fair coin's been flipped 100 times with 56/100 as the
4 answers
568 views
The point (3, 2) is rotated 30 degrees about the origin. What are the polar coordinates of this after rotation?
Am I right in
4 answers
2,196 views
A particle moves along a trajectory given by p(t) = <6t, (2 + 3t - 2t^2)>. What is the particle's displacement during the time
1 answer
388 views
On a biased coin the probability of it showing heads for a given coin toss is 0.52. In a sequence of tosses, what is the
3 answers
527 views
Given:
|4 -2| X = 2|-4 -4| |-1 1| | 2 2| What is X? I solved this and couldn't get an answer - that is, the result was
4 answers
498 views
Answers (12)
Oooh, I forgot about inverse matrices. Thank you!
Oh duh I'm dumb. TY!
That one works, thank you! Didn't consider actually getting the average properly, whoops.
Ah awesome! Any specific reason we're dividing by 1000? Just to get the right decimal?
That's just negative 2 squared. -2 * -2 = 4. Not sure what you mean 'without an exponent'. (-2)^2 is usually written that way to indicate that it's -2 that's being squared, not -(2)^2, which would be -4.
First, find 1/9th of 450. That's 50, because 450/9. So, you spent 50 on chocolate, meaning you now have 400. You spent 2/5ths on chocolate. Let's divide 400 by 5 to find 1/5 - that's 80 - then multiply that by 2 to get 2/5 - that's 160. So, you spent 50 on
Have you considered looking up trigonometric derivation rules? There're a few that might be useful.
You have 4 of the letter R, 2 of the letter B, 1 of the letter Y and 1 of the letter G. Added together, total is 8. Now, you have 4 Rs, out of 8 total letters. 4/8. But this isn't one of your answers, so how can you simplify it? 4/8 is also 2/4, isn't it?
You have 550 litres of oil. 1/5 is 0.2, so you can do 550 * 0.2 with a calculator to get 110. 110 * 2 = 220, so you sold 220 litres. You also poured 110 litres out. This means in total, you lost 330 litres. 550 - 330 = 220 litres remaining.
Hey Scott, Having a little trouble still. 80 = (400 * 9.8) / sin(2theta) becomes sin2theta = 3920/6400, which is sin2theta = 0.6125 which is arcsin(0.6125 / 2) which is 17.83, but my homework is still marking this as incorrect. Is there something
1648068280 1,648,068,280 (always separate from the back in groups of 3 - this number is over 1 billion!) To the nearest ten thousand is 1648070000, I believe.
If you add the numbers together, you get 887569. We can round in stages here. Rounding to the nearest 10 gets you 887570. Rounding to the nearest 100 gets you 887600. 5 and up - round up! 4 and down - go down.
