Petra practiced her clarinet 2/4 of an hour on Tuesday, 2/4 of an hour on Thursday, and 1/4 of an hour on Saturday. How many hours did Petra practice her clarinet on those days.

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

Determine the area of a triangle with (see picture below)