Sophie opened a picture of a tree on her cell phone screen and zoomed in 2.5 times. The new scale of the picture became 1:168. What would be the scale if it was zoomed in 4 times? Please help. I can't solve :

Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, b and b: bb = 30, bb = 10, and bb = 10. calculate the frequencies of the two alleles in the population’s gene pool.

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree