MaxWong

1) Turn them into improper fraction

2) Multiply denominator by denominator, numerator by numerator.

3) Turn it back to mixed fraction

DONE!!

Examples:

$1\dfrac{6}{13}\times 4\dfrac{17}{57}\\ =\dfrac{19}{13}\times \dfrac{245}{57}\\ =\dfrac{1}{13}\times \dfrac{245}{3}\\ =\dfrac{245}{39}\\ =6\dfrac{11}{39}$

Of course you can simplify them, like what I did in step 2.

1680:720

= 168:72

= 42:18

= 7:3

Hmm.

Area of a regular hexagon = $\dfrac{3\sqrt3 a^2}{2}$

where a is the side length.

Therefore area of a regular hexagon whose perimeter is 24 ft. is $3\sqrt3 \cdot 4^2\cdot \dfrac{1}{2}\\ =24\sqrt3\text{ sq. ft.}$

For #2, I assume that the circle touches the side whose length is 14ft.

Then the area of shaded region is:

 $14\times 21 - \pi (7^2)\\ =(294-49\pi)\text{ sq. ft.}$

2 x 6/7

= 12/7

= 1 5/7

1/4 + 1/2 + 4/5

= 5/20 + 10/20 + 16/20

= 31/20

= 1 11/20

18/6 = 3

Each costumer bought 3 jump ropes.

BTW COSTUMER not CUSTOMER?

Let x ft be its width.

x + 2x = 72

3x = 72

x = 24

Therefore length = 2 x 24 = 48ft and width = 24ft

About $5\times 10^{99}$inch. Very good.

LOL

~The smartest cookie in the world.

Nope. The answer is already given at the end.

"Because X was always 10 "

5 times 5 = 25 :)

~The smartest cookie in the world