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Gemiola [76]
2 years ago
10

Math is not my thing! Can you help?

Mathematics
2 answers:
aksik [14]2 years ago
8 0

Answer:

12

Step-by-step explanation:

Equation: 5x + 9 - 4x

Plug in x = 3

New equation: 5(3) + 9 - 4(3)

Simplify: 15 + 9 - 12

Simplify: 12

<u>Answer: 12</u>

V125BC [204]2 years ago
6 0

Answer:

x+9

Step-by-step explanation:

5+9−4

1+9

x + 9

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If $3,000 is deposited at the end of every six months into an account that earns 10% semiannually, find the amount after 10 year
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7959.83

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Find a cubic function f(x) = ax3 + bx2 + cx + d that has a local maximum value of 4 at x = −3 and a local minimum value of 0 at
Vinvika [58]
The formula is f(x) = a x ^ 3 + b x ^ 2 + c x  + d 
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f '(- 3) = 0 (being a most extreme) ==> 27a - 6b + c = 0. 
f(1) = 0 ==> a + b + c + d = 0 
f '(1) = 0 (being a base) ==> 3a + 2b + c = 0. 
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Along these lines, we have the four conditions 
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a + b + c + d = 0 
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That is, f(x) = (1/32)(3x^3 + 9x^2 - 27x + 15).
8 0
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