The daytime temperature on Mercury can reach 430* C. The nighttime temperature can drop to -180*C. How much can the temperature drop in one day?

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

answer: n word

step-by-step explanation:

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d would equal 12

the answer is a. q=6,r=6√2

step-by-step explanation: