Linda planned to spend 9 hours practicing piano this week. by tuesday, she had spent 2 1/2 hours practicing. how much longer does she need to practice to reach her goal?

hours more.

Step-by-step explanation:

We have been given that Linda planned to spend 9 hours practicing piano this week. By Tuesday, she had spent 2 1/2 hours practicing.

To find number of hours Linda needs to practice to reach her goal, we will subtract 2 1/2 from 9 as:

Convert mixed fraction into improper fraction:

Combine numerators:

Therefore, Linda needs to practice hours more to reach her goal.

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .