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3 years ago

WRITE THE NEXT 2 TERMS OF EACH SEQUENCE

Mathematics

2 answers:

Helen [10]3 years ago

8 0

Answer:

1) 2,6,18,54,162,468 (multiply by 3 each time)

2) 2, -4, 8, -16, 32, -64 (i'm not sure what this is but i'm pretty confident i'm right lol)

3) 1,3,5,7,9,11 (add 2 each time)

4) 1, 2/3 , 4/6 , 8/9 , _ _ (i'm sorry i tried my hardest but i don't know this one)

Step-by-step explanation:

hope this helped! so sorry about 4...

zaharov [31]3 years ago

5 0

So for the first one you would multiply the first number by the next number. For example 2•3=6, 6•3=18, 18•3=54, etc...
• means to multiply

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Variance is the standard deviation squared but we're not going to use that now. Let's first calculate the mean:

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3 years ago

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Alexeev081 [22]

Answer:

30 gallons of 20% acid solution should be mixed.

Step-by-step explanation:

Let x gallons of a 20% acid solution was mixed with 30 gallons of a 40% solution, to obtain a mixture of 30% acid solution.

Therefore, final volume of the solution will be (x + 30) gallons.

Now concept to solve this question is

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