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Wewaii [24]
3 years ago
10

three sets of a sum of a s number and four are added to the sum of seven times the same number and thirteen

Mathematics
1 answer:
marta [7]3 years ago
3 0
Whaaaaaaaaaaaaaaaaaaaaaaaaaat
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We are given with the equation <span>f(x) = ax3 + bx2 + cx + d

Substituting, (3,11) 
</span><span>11= 27a + 9b + 3c + d
</span><span>@(5, 9) 
</span><span>9 = 125 a + 25 b + 5c + d
@</span><span>(4, 10)
</span><span>10 = 64 a + 16 b + 4c + d

@inflection point, second derivative is equal to zero
</span><span>f'(x) = 3ax2 + 2bx + c 
</span>f''(x) = 6ax + 2b = 0

when x is 4, 24 a + 2b = 0 or 12a + b = 0. 

There are 4 equations, 4 unknowns: answer is 
<span>0.5 x^3 - 6x^2 + 22.5 - 24 = 0</span>
4 0
3 years ago
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PLEASE ANSWER THIS FAST<br> (x+6)+(5x)=90
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Answer:

x=14

Step-by-step explanation:

there is a picture to help you foe the explanation

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2/5gal fill up 3/4 of a tank how many gallons will it take
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Answer:

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2 years ago
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the third term of an arithmetic sequence is 24 and the fifth is 32 if the first term is a1. which is an equation nth term of the
const2013 [10]
An = a1 + (n - 1)(d)
Where a1 is the first term and d is the common difference.
First find d, the common difference.
24, ____, 32
a3 a4 a5
Subtract 32-24 = 8
Subtract a5 - a3 = 2
Divide 8/2 = 4
d = 4
Use d and one of the values they give us to find a1.
a3 = 24
24 = a1 + (3 - 1)(4)
24 = a1 + 2(4)
24 = a1 + 8
Subtract 8 from both sides
16 = a1
an = 16 + (n - 1)(4)
Can also be written
an = 16 + 4n - 4
an = 4n + 12
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3 years ago
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