All Answers

#1

0

3/4 would be the answer you are looking for

GuestJan 7, 2015

#1

+5

ur mther 5/neg 3 square

GuestJan 7, 2015

#1

+4

+5

To get the Greates Common Factor (GCF) of 15 and 27 we need to factor each value first and then we choose all the copies of factors and multiply them:

15:	3			5
27:	3	3	3
GCF:	3

The Greates Common Factor (GCF) is: 3

hussein101Jan 7, 2015

#2

+961

0

$${\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}} = {\mathtt{2}}$$

.

shaniab29544Jan 7, 2015

#2

+961

0

$${\mathtt{9}}{\mathtt{\,\small\textbf+\,}}{\mathtt{10}} = {\mathtt{19}}$$

.

shaniab29544Jan 7, 2015

#4

+23247

+8

Go with Anonymous's answer because

not only is 7 an answer because (7)(7) = 49

but also -7 is an answer because (-7)(-7) = 49

(a negative number times a negative number has a positive anwer).

geno3141Jan 7, 2015

#3

+11912

+8

There is only one square root of 49 that's 7.its like

√7=49

or

7*7 = 49

rosalaJan 7, 2015

#6

+11912

0

I didn't even know it was Russian lol! Great idea tho!

rosalaJan 7, 2015

#2

+5

-7 and 7

GuestJan 7, 2015

#1

+7188

+5

There is only one square root of 49........that would be 7

happy7Jan 7, 2015

#5

0

i was just messing around, im not actually russian :)

GuestJan 7, 2015

#2

+5

Perhaps not perfect proof, but I would do as follows:

x = 0.9999... |multiply both sides by 10

10x = 9.9999...

Now 10x - x = 9.9999... - 0.9999..., so

9x = 9,

Thus x = 1

GuestJan 7, 2015

#4

+11912

0

It's ok! You just speak in the best of English u know! I can solve many puzzles!lol!

rosalaJan 7, 2015

#3

0

sorry angliskiy not good

GuestJan 7, 2015

#2

+11912

0

Would you mind writing in English anon?

rosalaJan 7, 2015

#1

0

Сделать женщину счастливой - легко, только очень дорого.

GuestJan 7, 2015

#1

+118612

+5

1.2:11

12:110

6:55

The most simple equivalent ratio is 6:55

MelodyJan 7, 2015

#394

+118612

+3

@@ End of Day Wrap Wed 7 /1/15 Sydney, Australia Time 11:40pm ♪ ♫

Good evening all

It is not hard to tell that much of the world is well settled into their school year.

Australian Children have almost all of January off. Tough luck for the rest of you LOL

Anyway, today our fabulous answerers were Alan, Heureka, CPhill, Shaniab29544, NotTheBestMathMaster, Happy7, Rosala and Geno3141. Thanks all.

Now for the interest posts:

1) Another of Heureka's masterpeices Thanks Heureka.

http://web2.0calc.com/questions/sin-x-2-0145424-x

2) Some Physics Thanks Alan

http://web2.0calc.com/questions/while-playing-snowbarding-a-guy-is-going-down-a-hill-with-120-kmh-he-then-ends-at-the-flat-part-of-the-hill-and-his-speed-decreases-with-6#r1

3) This is a really good ratio and simultaneous equations question. Melody

http://web2.0calc.com/questions/ratio-pls-help-kinda-confuse-_

4) A simple play with imaginary numbers

http://web2.0calc.com/questions/why-is-root-3i-multiplied-by-root-3i-equal-to-3

5) Understanding logs. Two different approaches. Melody and CPhill

http://web2.0calc.com/questions/log-19-0-5-log-19-2-0-how-to-explain-this

6) A repeating question LOL

http://web2.0calc.com/questions/0-999-1

7) Solve for x Thanks Chris and Heureka

http://web2.0calc.com/questions/solve-for-x_11

8) Some basic calculus Thanks Heureka

http://web2.0calc.com/questions/ds-dt-t-3t-2-and-s-0-when-t-1

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

MelodyJan 7, 2015

#205

+118612

0

thurs 8/1/15

1) Using Gyazo (there are other similar prgrams available if you prefer) - Good info for all levels

http://web2.0calc.com/questions/list-function

2) Puzzle probability question - Always a good one - Thanks Geno

http://web2.0calc.com/questions/suppose-you-re-on-a-game-show-and-you-re-given-the-choice-of-three-doors-behind-one-door-is-a-car-behind-the-others-goats-you-pick-a-do

3) Inverse functions Thanks Gino

http://web2.0calc.com/questions/g-x-1-2-x-8-g-x-__________-how-do-i-writ-an-equation-for-the-inverse-of-the-function

4) Anon's answer requires more brain power than I possess right now. Thanks CPhil and anon 1 and 2

http://web2.0calc.com/questions/how-do-i-get-60-using-7-numbers-under-20-only-using-a-number-once

5) Another to consider - Binomial expansion Thanks Geno.

http://web2.0calc.com/questions/with-how-many-zeros-does-11-100-1-end-explain-with-binomial-theorem

6) A simple but veery important convention for everyone. Can a sqrt be negative?

http://web2.0calc.com/questions/what-are-the-different-square-roots-of-49

7) This question (from yesterday) turned into a major interest post. It is good when that happens.

http://web2.0calc.com/questions/need-help-on-this-a-lot-thanks

8) Simplifying radicals - for the younger set :) Thanks Geno

http://web2.0calc.com/questions/the-square-root-of-90-times-the-square-root-of-14-times-the-square-root-of-70

9) Exponential decay Thanks Chris and Anon

http://web2.0calc.com/questions/a-hiker-in-africa-discovers-a-skull-that-contains-63-of-its-original-amount-of-c-14-find-the-age-of-the-skull-to-the-nearest-year-using-e

*10, 11,12 & 13) Floor and ceiling functions. I have included all these in great answers to learn from.

Thanks Chris

http://web2.0calc.com/questions/need-help-on-this-a-lot-thanks

http://web2.0calc.com/questions/find-all-values-of-nbsp-nbsp-such-that-nbsp-if-you-find-more-than-one-value-then-list-the-values-you-find-in-increasing-order-separated

http://web2.0calc.com/questions/let-nbsp-evaluate-this-sum-has-1000-terms-one-for-the-result-when-we-input-each-integer-from-1-to-1000-into-nbsp

http://web2.0calc.com/questions/the-function-nbsp-nbsp-is-defined-as-find-nbsp

14) Function question for younger students

http://web2.0calc.com/questions/the-function-nbsp-nbsp-is-defined-for-nbsp-nbsp-as-follows-find-all-real-numbers-nbsp-nbsp-such-that-nbsp-nbsp

*15) This result is really weird graph. It is a degenerate conic. It has degenerated into two cross lines. I have included this in great answers to learn from. Thanks Chris

http://web2.0calc.com/questions/how-do-you-solve-this-please-help-me-2x-2-3y-2-5xy-and-3x-y-5

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

MelodyJan 7, 2015

#5

+118612

0

Yes, maybe she is :))

MelodyJan 7, 2015

#1

+118612

+5

WhAT about it?