ykluhredd
04.09.2020 •
Mathematics
Pluto is 5,560,000,000 years old. Estimate the age of Pluto by writing it in the form of x * 10^y years, where x and y are single-digit numbers.
6 * 10^9
6 * 10^8
5 * 10^9
5 * 10^8
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Ответ:
Scale factor for dilation is 1/2 or 0.5
because 1/2 (8,0) = (4,0) ; 1/2(6,2) =(3,1) ; 1/2(-2,-4) = (-1,-2)
If P'Q'R' is reflected in y axis x coordinate will be same but y coordinate will be negatived
P" ( 4,0)
Q" (3,-1)
R"(-1,2)
The triangle is reflected. the sides are equal. Areas are equal.
Distance between (4,0) and (3,-1) = sqrt[(4-3)^2+(0-(-1))^2] = sqrt[1+1] =sqrt (2)
In the other triangle distance between (4,0) and (3,1) =sqrt[(4-3)^2+(0-1)^2] =sqrt(1+1) =sqrt(2)
and so on.