Classify the triangle by sides. 8, 15, 17

acute

O right

not a triangle

obtuse

right triangle

Step-by-step explanation:

The square of the longest side is equal to the sum of the squares on the other 2 sides, that is

17² = 289

8² + 15² = 64 + 225 = 289

Thus by Pythagoras' identity the triangle is right

Keri and Kaley will have the same amount of money by week 5.

Step-by-step explanation:

First I made a table and on one side I started with Keri's amount which was 600 dollars. On the other side was Kaley's where she started with 200 dollars. Equally, on Keri's side i subtracted 30 per week and on Kaley's side I added 50 per week. If you add and subtract correctly, by week 5 they'll both have the same amount.

my work: