75 as a product of prime numbers

75 = 3*5*5

Step-by-step explanation:

There are many other ways like 25*3, or 1*75, but if you want prime numbers,

it would be 3*5*5.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5