herby drew a rectangle with dimesions 3x5 he wants to make a similar rectangle that has a scale factor of 1/2 what will the new dimesions be of the rectangle

Can someone pls ! pls answer all. no explanation needed..

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin