well, if you take 42/140 and make it equal to x/100, you can cross-multiply. After doing that, you get the equation 4200=140x. Divide each side by 140, and you get x=30. Now you know that 42 is 30% of 140. :)
42- you figure this out by changing the percent into a decimal and multiplying it. 0.3 x 140=42
(12/30) x (11/56) =(12 x 11)/(30 x 56) =132/1,680 =11/140
140 = 1 x 140.......... 2 x 70.......... 4 x 35.......... 5 x 28.......... 7 x 20.......... 10 x 14
70 x 2 = 140 28 x 5 = 140 and so on.
30% of 140:= 30% x 140= 0.30 x 140= 42
no 4 x 30 = 120 5 x 30 = 150 so 140 is not a multiple of 30
42 140 x 0.7
% rate: = (42/140) x 100% = 0.30 x 100% = 30%
well, if you take 42/140 and make it equal to x/100, you can cross-multiply. After doing that, you get the equation 4200=140x. Divide each side by 140, and you get x=30. Now you know that 42 is 30% of 140. :)
42- you figure this out by changing the percent into a decimal and multiplying it. 0.3 x 140=42
30 percent off of 140 = 9830% off of 140= 30% discount applied to 140= 140 - (30% * 140)= 140 - (0.30 * 140)= 140 - 42= 98
1 x 140 = 1402 x 140 = 2803 x 140 = 4204 x 140 = 5605 x 140 = 7006 x 140 = 8407 x 140 = 9808 x 140 = 11209 x 140 = 126010 x 140 =1460I got x10 for the people who don't know them....
(12/30) x (11/56) =(12 x 11)/(30 x 56) =132/1,680 =11/140
to figure percent off: calculate the percent, then subtract from the original amount.30% X $200 = $60. $200 - $60 = $140
Angle is x degrees. Then 2(180 - x) = 5(90 - x) + 30 360 - 2x = 450 - 5x + 30 3x = 120 x = 40 Check: supplement is 140, 2 x 140 = 280 complement is 50, 5 x 50 = 250 difference is 30 as required. QED
LCM x GCD = 140 x 77 140 = 2 x 2 x 5 x 7 77 = 7 x 11 GCD = 7 LCM = 140 x 77 / 7 = 140 x 11 = 1540