Straight

Calculate this on our homepage.

You know, this forum is not for homework...

Hello Guest,

If 3a + b + c = -3, a + 3b + c = 9, a + b + 3c = -19, then find abc.

\(3a+b+c=-3 \mbox { } (1)\)

\(a+3b+c=9 \mbox { } (2)\)

\(a+b+3c=-19 \mbox { } (3)\)

\((a, \mbox { } b, \mbox { } c) = (-\frac{1}{5}, \mbox { } \frac{29}{5}, \mbox { } -\frac{41}{5})\)

Now multiply them.

Hope that was helpful.^^

Straight

Hello Guest,

Write down three numbers. The first number is 16. Each of the next numbers is half the number.

16, 8, 4 is the answer.

Hope that was helpful.^^

Straight

Umm, this seems like homework in Chemistry, search the question up and you will see that.

Chegg costs money!

Fun Fact: A question from 2015.

Straight

Hello Hartelin,

When I use x 

Example: x+1=3 = Error: timeout

IT GIVES Error: Timeout

WHY????

HELP PLEASE

That is coming because you type something nonsense or don't know how to do that equation.

Hmm, x+1=3 => x=2, they said by me, but actually, you can calculate this yourself.

But if "Error: timeout" comes, and you want to know the solution for e.g x than you can also use WolframAlpha (I don't want to make advertisement).

Hope that was helpful.^^

Straight

Hello Guest,

there is a calculator, namely: Remainder Calculator | The best Long Division Calculator (calculatored.com)

and the link https://www.calculatored.com/math/algebra/remainder-calculator.

I also got the remainder 5.

Hope that was helpful.^^

Straight

Okay, I am actually sorry,

I must concentrate on myself. 

Straight

I forgot-

990, 991, 992, 993, 994, 995, 996, 997, 998 (9) So there are actually 149 integers.

Also, it is not (19) I meant (10). Umm, can someone explain which answer is right and why?

Straight

Hello Guest,

Of the three-digit integers greater than $500$, how many have two digits that are equal to each other and the remaining digit different from the other two

500, 511, 522, 533, 544, 566, 577, 588, 599 (10)

600, 611, 622, 633, 644, 655, 677, 688, 699 (10)

700, 711, 722, 733 ,744 ,755 ,766, 788, 799 (10)

800, 811, 822, 833, 844, 855, 866, 877, 899 (10)

900, 911, 922, 933, 944, 955, 966, 977, 988 (10)

505, 515, 525, 535, 545, 565, 575, 585, 595 (10)

606, 616, 626, 636, 646, 656, 676, 686, 696 (10)

707, 717, 727, 737, 747, 757, 767, 787, 797 (10)

808, 818, 828, 838, 848, 858, 868, 878, 898 (10)

909, 919, 929, 939, 949, 959, 969, 979, 989 (10)

550, 551, 552, 553, 554, 556, 557, 558, 559 (10)

660, 661, 662, 663, 664, 665, 667, 668, 669 (10)

770, 771, 772, 773, 774, 775, 776, 778, 779 (19)

880, 881, 882, 883, 884, 885, 886, 887, 889 (10)

This gives 140 numbers, if it were so desired.

Hope that was helpful. ^^

Straight