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10 squared is 100. 20 squared is 400. 225 is between 100 and 400. Its square root will be between 10 and 20.
Deductive reasoning. You know that 10 x 10 is 100 and 20 x 20 is 400, so the square root of 225 is between 10 and 20. Only numbers that end in a five will create a square that ends in a five. 15 x 15 = 225
225 = (15)2 2*2*5=20 3 digits in 225
it is .10 is closer, because .10 times 10=1 With .05 it would be .05 times 20=1
15
It is in between because it is 15
10 squared is 100. 20 squared is 400. 225 is between 100 and 400. Its square root will be between 10 and 20.
10 squared is 100. 20 squared is 400. 225 is between 100 and 400. Its square root will be between 10 and 20.
Deductive reasoning. You know that 10 x 10 is 100 and 20 x 20 is 400, so the square root of 225 is between 10 and 20. Only numbers that end in a five will create a square that ends in a five. 15 x 15 = 225
15 = 1252 + 20(1*5) = 125 + 100 = 225 or 15*15 = 15*10 + 10*15/2 = 150 + 75 = 225
|-20 - (-40)| = 20 |-20 - 10| = 30 -20 is closer to -40 than 10.
225 = (15)2 2*2*5=20 3 digits in 225
The square root of 20 is approximately 4.47, while the square root of 10 is approximately 3.16. Therefore, the square root of 20 is greater than the square root of 10. This can be confirmed by squaring both values to see which results in a larger number.
Round 15 to the nearest 10 would be 20, as it is closer to 20 than 10.
it is .10 is closer, because .10 times 10=1 With .05 it would be .05 times 20=1
15
225 0f 20 percent = 45225 * 20%= 225 * 0.20= 45