Scientists estimate that the mass of the suns is 1.989 x 10^kg. How many zeros are in this number when it’s written in standard notation

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?