In a county survey , families with 3 or more children are chosen a. random b. systematic c. stratified d. none of the above

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

Can someone tell me if this is perpendicular? !

In the diagram below,abc is congruent to dec what is the value of x