Write 3 tenths and 9 hundredths as a decimal

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*