Triangle a has side lengths of 6cm,8cm and 10cm . is triangle b or triangle c a scaled copy of triangle A? calculate scale factors to explain your reasoning

The mathematical expression 9€ t means

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.