28
you would take the answer 420 and split in half
70 x 6
1 x 420, 2 x 210, 3 x 140, 4 x 105, 5 x 84, 6 x 70, 7 x 60, 10 x 42, 12 x 35, 14 x 30, 15 x 28, 20 x 21 = 420
You can write a simple equation: x + (x+1) = 420, where x is the first number. Alternatively, you can make x the second number and write x + (x - 1) = 420. Using the first one, x + x + 1 = 420, so 2x + 1 = 420. 2x = 419 (subtract 1), so x = 209.5. You can check this answer: 209.5 + 210.5 = 420.
28
2 x 2 x 3 x 5 x 7 = 420
Equation: x^2+x=420 x^2+x-420=0 Using the quadratic formula, x=(-1+sqrt(1+4*420))/2 x=(-1-sqrt(1+4*420))/2 x=20 or -21
No, it equals 420.
you would take the answer 420 and split in half
70 x 6
58.33333 sq. yards
Close, but not exactly.420 ft X 210 ft = 88200 ft22 acres = 87120 ft2
377
1 x 420, 2 x 210, 3 x 140, 4 x 105, 5 x 84, 6 x 70, 7 x 60, 10 x 42, 12 x 35, 14 x 30, 15 x 28, 20 x 21 = 420
4203 = 420 x 420 x 420 = 74088000
To find two numbers that multiply to 840, we can factorize 840 into its prime factors: 2 x 2 x 2 x 3 x 5 x 7. To pair these factors, we can combine them into pairs that equal 840, such as (2 x 420), (2 x 2 x 210), (2 x 2 x 2 x 105), (2 x 2 x 3 x 70), (2 x 2 x 5 x 42), (2 x 2 x 2 x 3 x 35), (2 x 2 x 3 x 5 x 14), (2 x 2 x 2 x 3 x 5 x 7). Therefore, the pairs of numbers that multiply to 840 are (2, 420), (4, 210), (8, 105), (6, 140), (10, 84), (12, 70), (14, 60), and (15, 56).