Answer:
calculate the distance between the 2 points, then multiply by 4 to get the perimeter
d^2 = 2^2 + 7^2 = 4+ 49 = 53 distance squared = sum of the squares of the differences in y values squared plus difference in corresponding x values squared. 7-5 = 2 4--3 = 7 2^2 =4 7^2 = 49
d = sqr53 = about 7.28
Perimeter = 4sqr53 = about 29.12
PLS MARK THE BRAINLIST (❁´◡`❁)
<span>Scientists choose where are units of time began and ended based on major changes in life forms at certain times</span>
Answer:
time taken for 25% Phlebotinum and 75% Dilithium is 168 million years
Explanation:
radioactive isotope of Phlebotinum decays into Dilithium.
time taken to half life takes = 42 million years
half life means that the Phlebotinum is 50% and Dilithium is also 50%
and now it is given that Phlebotinum is 25% and Dilithium is 75%
hence this condition will come after two half lives.
for one half life it takes 42 million years
and for second half life time becomes 4 times of first half life
time for 25% Phlebotinum and 75% Dilithium is = 4 × 42
= 168 million years.
hence time taken for 25% Phlebotinum and 75% Dilithium is 168 million years
Which one are you talking about
