Hi these two questions are similar so can someone pleaseee help me!! I need both answers but if you can only answer one that’s ok

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73