The following sequence is a combination of an arithmetic sequence and a geometric sequence:
5; 5; 15; 10; 25; 20; 35; 40;...
4.1 Write down the next 2 terms.
4.2 Calculate T42 - T41
4.3 Determine the sum of the first 50 terms.
4.4 Prove that ALL the terms of this infinite sequence will be divisible by 5.

correct answer is infinitely many solutions

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

solving the above equation:

4x + 6 = -4 +4x +10

combining like terms

4x -4x = -4+10-6

0=0

since both sides are 0=0, we end up into true statement it means it has infinite many solutions.

so correct answer is infinitely many solutions

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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