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gregori [183]
3 years ago
14

Use the given nth term formula to compute the first five terms of the sequence. an = 8n^2 − 4n

Mathematics
1 answer:
Ghella [55]3 years ago
7 0

Answer:

0,4,24,60,112

Step-by-step explanation:

an = 8n² − 4n

first 5 terms is a0, a1, a2, a3 and a4

for a0, n = 0,

a0 = 8(0)² − 4(0) = 0

for a1, n = 1,

a1 = 8(1)² − 4(1) = 8-4 = 4

for a2, n = 2,

a2 = 8(2)² − 4(2) = 8(4)- 4(2) = 32-8 = 24

for a3, n = 3,

a3 = 8(3)² − 4(3) = 8(9) − 4(3) = 72 - 12 = 60

for a4, n = 4,

a4 = 8(4)² − 4(4) = 8(16) − 4(4) = 128 - 16 = 112

hence the first 5 terms are

0,4,24,60,112

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Answer:

\frac{2}{5}

Step-by-step explanation:

The total length of this line is 15 units. FG is 6 units long.

This means that the probability of p being on FG would be \frac{6}{15} which can be simplified to \frac{2}{5}

5 0
3 years ago
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Which of the following statements is true?
Inessa05 [86]

Answer: the number -5 is a real number

Real numbers are both negative and positive numbers. -5 is a negative number. Since real numbers include negative numbers, -5 is the answer.

Hope this helps!

7 0
3 years ago
Bring the fraction a/a−4 to a denominator of 16−a^2<br><br> really do appreciate this thx
RSB [31]

Answer:

-a(a+4)/(16 - a²)

Step-by-step explanation:

            a/(a - 4)                  Multiply by (a + 4)/(a + 4)

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= -a(a+4)/(-a² + 16)              Reorder terms in denominator

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8 0
3 years ago
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vazorg [7]

If x+a is a factor of the polynomial, it means that -a is a root of the polynomial.

In fact, if a polynomial p(x) has a root x_0 (i.e. p(x_0)=0), then the polynomial is divisible by (x-x_0)

In your case, you know that the polynomial is divisible by (x+a)=(x-(-a)), so -a is a solution.

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