21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?

2.33 inches and 4.66 inches

Step-by-step explanation:

2x+x=7 or 3x=7

divide by three and x =2.33

that's for the first one and the second one is twice the size so it'll be 4.66 inches

smaller piece length = 2.333 and

larger piece length = 4.666

Step-by-step explanation:

It is given that,

21 A stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one.

To find the length of two pieces

Le x be the length of smaller part of piece.

Then the length of larger piece = double the smaller piece = 2 * x = 2x

We have total length = 7 inches

Therefore we can write,

x + 2x = 7

3x = 7

x = 7/3 = 2.333

2x = 2.333 * 2 = 4.666

Therefore smaller piece length = 2.333 and

larger piece length = 4.666

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680