Use one or more properties to rewrite each expression as an equivalent expression that does not use parentheses. (y+1) +4=......... (8•r)•1/8=............

Answer:12

Step-by-step explanation:In the table you can see that the numbers given under Y

Are in a pattern counting by sixes so if you do 6×3 you get 18 for missing the second one so we do 6×2 which equals 12 and that is the answer.

The answer for this problem would be 628.3 Cubic Meters.

To solve, simply follow the way of finding the volume of a cylinder.

Calculate volume of a cylinder: V = πr2h.

Calculate the lateral surface area of a cylinder (just the curved outside)**: L = 2πrh.

Calculate the top and bottom surface area of a cylinder (2 circles): T = B = πr. ...

Total surface area of a closed cylinder is:

628.3

Hope this helps:}

Answer:

180 grams

Step-by-step explanation:

As we know that after each half life ,  the radioactive substance will become half of the initial .

Given half life of the radioactive yttrium is 10 hours .

So, in 20 hours two half lives will be present .

After first half life , substance will become half of initial ,

Initially it was 720 grams , so it will become 360 grams after first half life that is 10 hours .

Now , after second half life , It will again become half of the quantity present after first half life which is 360 grams so it will become 180 grams.

Thus,

After 20 hours only 180 grams of the yttrium will be present.

Answer:

Step-by-step explanation: