Kristen and marina are making prism out of cardboard using the design below. Whose design uses more cardboard, and by how many square inches? Show how you determined your answer

If 20% of a number is 35, what is 50% of that number?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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)