Althea traveled 280 miles at a speed of 70 miles/hour. How much time did she take to cover this distance?

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

Pls! does anybody know a shortcut for answering these types of questions in the future?

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0