Explain how the position of the decimal changes in a quotient as you divide by increasing powers of 10.

For every power of 10, the decimal point moved back one digit, e.g.

123/10 = 12.3

123/100 = 1.23

123/1000 = 0.123

Hope this helps!

For every power of ten as the decimal is being divided, it moves as many times there are zeros. Also, you can use long division and then put the decimal point in the same spot as the dividend.

120/10 = 12
1.20/10 = 0.12

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )