Carl wants to find the product 30×56 . Which of the following best explains how he can find the product mentally?A. He knows that 30÷5 is 6. He then multiplies 6 by 6 to get 36.B. He knows that 30×66 is 30. He then subtracts 1 from 30 to get 29.C. He knows that 3×6=18. He then adds 18 and 5 to get 23.D. He knows that 30×16 is 5. He then multiplies 5 by 5 to get 25.

He knows that  

30

×

1

6

is 5. He then multiplies 5 by 5 to get 25.

Step-by-step explanation:

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1