What is the difference in volume between a sphere with radius r and a sphere with radius 0.3r ? 0.027πr3

0.036πr3

1.297πr3

1.333πr3

1. are the triangles similar and if so why? what is the value of x? show your work.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?