Hallar un numero, cuyo duplo aumentado en 5 es a su cuadruplo disminuido en 5 como 5 es a 7

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?