jimkey17

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten

 With a dot in beetween a whole number and the decimal part

Example:  0.0538483

We have 3/4*5/9=(3*5)/(4*9)=15/36 so we have $\dfrac{15}{36}$

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That's exactly what i said

After the And we get I mean And we get 13

We know that 96889010407 is 7^13 so $log_7(96889010407)=13$and we get 

cos(300)=1/2 or $\cos(300)=\dfrac12$

we have 2(x-1)^2+(x-1)((x-1)+(x+2)) we can distribute to get 2x^2+−4x+2+x^2+−x+x^2+2x+−x+1+−x+−2 and then combine like terms to get (2x^2+x^2+x^2)+(−4x+−x+2x+−x+−x)+(2+1+−2) which can be simplfied as 4x^2+−5x+1 then becomes (D)4x^2−5x+1 so we have that the area is $\boxed{(D)4x^2−5x+1}$

we know that it has the same ration as 63:57 so we have 57/63*21=1197/63=19 so we have that the length of CG is $\boxed{19}$

we seperate them into a rectangle and a triangle where the rectangle's area is 9*20=180 and the triangle's area is (14-9)*(20-11)/2=5*9/2=45/2=22.5 so the area of the shape is 180+22.5=202.5 so we get that the area of the shape is $\boxed{202.5}$