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Sphinxa [80]
3 years ago
5

Which is f(5) for the function 2x2 + 2x - 3?

Mathematics
2 answers:
Olin [163]3 years ago
4 0

Replace every x you see with 5 and do the math.

f(x) = 2x^2 + 2x - 3

f(5) = 2(5)^2 + 2(5) - 3

f(5) = 2(25) + 10 - 3

f(5) = 50 + 10 - 3

f(5) = 60 - 3

f(5) = 57

olchik [2.2K]3 years ago
3 0
F(5)= 2x2+2(5)-3
f(5)=11
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12.5

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6 0
3 years ago
The arithmetic sequence a; is defined by the formula:
Morgarella [4.7K]

Answer:

The sum of the first 650 terms of the given arithmetic sequence is 2,322,775

Step-by-step explanation:

The first term here is 4

while the nth term would be ai = a(i-1) + 11

Kindly note that i and 1 are subscript of a

Mathematically, the sum of n terms of an arithmetic sequence can be calculated using the formula

Sn = n/2[2a + (n-1)d)

Here, our n is 650, a is 4, d is the difference between two successive terms which is 11.

Plugging these values, we have

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6 0
3 years ago
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Correlation between x & y is 0.6125.

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7 0
1 year ago
the ratio of red marbles to blue marbles in a bag is 3:4. if there are 42 marbles in the bag, how many of the marbles are red?
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8 0
3 years ago
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