May someone help me I’ll give you brainiest

The isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides length. if one of the longer sides is 6.3 centimeters what is the length of the base

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5