Q: What is 20 x 3?

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x+3 = 20 x = 20-3 x = 17

20 cubed cubed = [203]3 = (20 x 20 x 20)3 This equals 20 x 20 x 20 x 20 x 20 x 20 x 20 x 20 x 20 which = (20)9 The rule to work it out is:multiply the two exponents ie 3 x 3 = 9 206 is 20 x 20 x 20 x 20 x 20 x 20 which is obviously less than 209. See: http://oakroadsystems.com/math/expolaws.htm#WhatsNew#WhatsNew

3 * 21 = 3*(20 + 1) = 3*20 + 3*1 = 60 + 3 = 63.

20/30 = (2 x 10)/(3 x 10) = 2/3

3/20 = 3/5 x 1/4 0.25 x 3/5 = 3 x 0.05 = 0.15 = 15/100 = 3/20

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x+3 = 20 x = 20-3 x = 17

(20 + x)-3

20 cubed cubed = [203]3 = (20 x 20 x 20)3 This equals 20 x 20 x 20 x 20 x 20 x 20 x 20 x 20 x 20 which = (20)9 The rule to work it out is:multiply the two exponents ie 3 x 3 = 9 206 is 20 x 20 x 20 x 20 x 20 x 20 which is obviously less than 209. See: http://oakroadsystems.com/math/expolaws.htm#WhatsNew#WhatsNew

The solution for x is 3. Since 3 is to 10 as 2x is to 20 Then the ratio holds: 3 / 10 = 2x / 20 Solving for x: 3 / 10 = 2x / 20 0.3 = x/10 (0.3 * 10) = x 3 = x x = 3

3 * 21 = 3*(20 + 1) = 3*20 + 3*1 = 60 + 3 = 63.

|x-3|/2=10 |x-3|=20 |a|=b means a=b or a=-b Then : x-3=20 or x-3=-20 So: x=23 or x=-17

2 x 2 x 5 = 20 3 x 3 x 3 = 27

If 3x=20, then x=20/3 or approximately 6.67

3/20 = 0.15 = 15%% rate:= (3/20) x 100%= 0.15 x 100%= 15%

The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors of 27 are 1, 3, 9, and 27.

5/3 x = 20 Therefore, 20 / 5/3 = x x = 12

2 x 3 x 3 = 18 2 x 2 x 5 = 20