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Viefleur [7K]
3 years ago
6

Write an explicit rule for the geometric sequence 4, 8, 16, 32, ..

Mathematics
2 answers:
Alina [70]3 years ago
8 0
8÷4=2
16÷8=2
32÷16=2
multiply by 2
Paul [167]3 years ago
5 0
First term:  a(1) = 4; common ratio:  r = 2

Then:

a(n) = 4(2)^(n-1)

Check:  Predict the 4th term using this formula:

a(4) = 4(2)^3 = 4(8) = 32  (correct)
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The graph of f(x) = x2 has been shifted into the form f(x) = (x − h)2 + k: a parabola with a vertex of 4, negative 2 What is the
4vir4ik [10]

we know that

The vertex of the function f(x)=x^{2} is the point (0,0)

The vertex of the function f(x)=(x-h)^{2}+k is the point (4,-2)

The x-coordinate of the vertex is equal to h

the y-coordinate of the vertex is equal to k

so

the value of h is 4

the value of k is -2

the equation is

f(x)=(x-4)^{2}-2

therefore

<u>the answer is the option a</u>

4



4 0
3 years ago
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Which equation shows function notation for a vertical stretch of factor 2 and shift right 5 units? *
liubo4ka [24]

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7 0
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6 0
3 years ago
The greater of two consecutive EVEN numbers is 40 less than twice the smaller number. Find the larger number
Bas_tet [7]

Answer:

<h3>           44</h3>

Step-by-step explanation:

z -  some integer

2z - first given even integer (the smaller one)

2z+2 - even integer consecutive to 2z  (the larger one)

2(2z)    - twice the smaller number

2(2z) - 40    - the number 40 less than twice the smaller number

2(2z) - 40 = 2z + 2

4z - 40 = 2z + 2

2z = 42

 

2z+2 = 42+2 = 44

check:

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3 0
3 years ago
3 times a number is 54 less than the square of that number. Find the negative solution.
Pavel [41]

Answer:

x=-6

Step-by-step explanation:

Let x be the number

3x = x^2 -54

Subtract 3x

3x-3x = x^2 -3x-54

0 = x^2 -3x-54

Factor

What 2 numbers multiply to -54 and add to -3

-9*6 = -54

-9+6 = -3

0=(x-9) (x+6)

Using the zero product property

x-9=0    x+6=0

x=9  x=-6

The questions asks for the negative solution

x=-6

3 0
3 years ago
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