Q: What is 21x10?

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210 7x3=21x10=210

21 multiply by 10 = 210

25-4=21 21x10=210 210+(4-1)= 213 doesnt use the 6 though

no dude u got that so rong its not 120 its 3x7=21x10=210 30x7=210 lol fail kid XD

210 = 21x10 = (3x7)(2x5) = 2x3x5x7. The following sets of factors all fit the conditions of the question: 2,3,5,7; 5,6,7; 2,7,15; 2,3,35; 3,10,7; 2,5,21 and 3,5,14.

31 x 7 --- __7 21 (The underscores are for formatting) The 7 should be aligned in a column to the right of 21 217 Or: 31 = 3x10 + 1 ---> 7 x (3x10 + 1) = 7x3x10 + 7x1 = 21x10 + 7 = 210 + 7 = 217

To calculate the volume of stone needed, first convert the depth to feet (2 inches = 1/6 feet). Then multiply the area (21x10 = 210 square feet) by the depth (1/6 feet) to find the volume in cubic feet: 210 sq ft * 1/6 ft = 35 cubic feet of stone.

Improve 21x1=21 21x2=42 21x3=63 21x4=84 21x5=105 21x6=126 21x7=147 21x8=168 21x9=189 21x10=210

876 divided by 21. You can use your knowledge of the base 10 system to say: 21X10=210(too small) 21X20=420(still too small) 21X30=630(let me subtract 876-630=246, I'm getting close) 21X40=840 and when I subtract I get a remainder of 36. I can make 1 more group of 21. 36-21=15. So my answer is 41 with a remainder of 15. You can use multiples of 100,100, etc. for larger numbers.

The multiples of 21 up to 500 are as follows: 21x1=21 21x2=42 21x3=63 21x4=84 21x5=105 21x6=126 21x7=147 21x8=168 21x9=189 21x10=210 21x11=231 21x12=252 21x13=273 21x14=294 21x15=315 21x16=336 21x17=357 21x18=378 21x19=399 21x20=420 21x21=441 21x22=462 21x23=483 21x24=504

An object with a charge of -21mC has an excess of 21 million electrons. This is because each electron carries a charge of -1.6 x 10^-19 coulombs. So, 21mC divided by -1.6 x 10^-19 C ≈ 21 x 10^(-3) / 1.6 x 10^(-19) ≈ 1.31 x 10^(16) electrons.