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tatiyna
4 years ago
5

What is the explicit formula for this geometric sequence? 8,4, 2, 1, ...

Mathematics
1 answer:
g100num [7]4 years ago
6 0

Answer:

a_{n} = 8 *0.5^{n-1}

Step-by-step explanation:

First find the common ratio

r = 4/8 = 1/2

and first term is 8

a_n = a_1 * r^(n-1)

a_n = 8 * (1/2)^(n-1)

a_{n} = 8 *0.5^{n-1}

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Which of the binomials below is a factor of this trinomial? x2 + 5x + 6
lianna [129]

Factor out the trinomial. Find factors of x² and 6 that would, when added, give you 5x

x² = x * x

6 = 3 * 2

(x + 3)(x + 2) are your binomials.

To solve for x, set each parenthesis = 0

x + 3 = 0

x + 3 (-3) = 0 (-3)

x = -3

x + 2 = 0

x + 2 (-2) = 0 (-2)

x = -2

x = -3, -2

hope this helps

5 0
3 years ago
Read 2 more answers
Which equation represents a proportional relationship? y=−2x y=32x y = 4x + 3 y=2(x+1)
Liono4ka [1.6K]

Answer:

Option B is correct.

y =32x represents a proportional relationship.

Step-by-step explanation:

If two quantities are said to have a proportional relationship if they vary in such a way that one of the quantities is a constant multiple of the other i.e,

y = |k| y where |k| is constant proportionality.

By definition :

y =32x  where k =32 is constant ,  represents a proportional relationship.



3 0
3 years ago
Read 2 more answers
Can you please help me i really appreciate it
kolezko [41]

Answer:

slope = 2

Step-by-step explanation:

Pick two points to find the slope. (1, 2) and (3, 3)

From the left (1, 2) to (3, 3), it goes up 2 units and to the right 1 unit.

We can plug this into the slope equation which is rise/run

2/1 = 2 = slope

3 0
2 years ago
in a group of 35 children, 10 have blonde hair, 14 have brown eyes, and 4 have both blonde hair and brown eyes. if a child is se
miskamm [114]

\frac{14}{35}  +  \frac{10}{35}  -  \frac{4}{35}   =  \frac{4}{7}

8 0
3 years ago
The width of a rectangle is 20 inches. What must the length be if the perimeter is at least 180 inches.a 85.5 inches b 70 inches
Veronika [31]
The anwser is b 75 inches
5 0
4 years ago
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