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Rasek [7]
3 years ago
13

PLEASE JUST GIVE ME THE ANSWERS TO THE LAST TWO QUESTIONS

Mathematics
1 answer:
professor190 [17]3 years ago
8 0
Super easy just add 2 in front of Na H CO3(s). Your formula will be balanced.
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mojhsa [17]
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4 years ago
18 divided by 6 CAN ANYBODY HELP ME I WILL GIVE EXTRA POINTS!!
Arte-miy333 [17]

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3

Step-by-step explanation:

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3 years ago
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pishuonlain [190]

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Step-by-step explanation:

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3 years ago
The quadratic function f(x)=ax^2+4x+c has a maximum at the point (1, 9) . What are the values of a and c?
valina [46]

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Step-by-step explanation:

(this answer uses some basic calculus)

We know that f'(x) = 2ax + 4, and since (1,9) is a maximum of f, then f'(1) = 0. That means 2a + 4 = 0, so \boxed{a = -2}. Then since f(1) = 9, we have -2(1)^2 + 4(1) + c = 9, so \boxed{c = 7}.

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