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Vika [28.1K]
3 years ago
12

Match the type of sequence to the appropriate example. 1. 2, 9, 16, 23, ... exponential decay 2. 3, 15, 75, 375, ... arithmetic

sequence 3. 0, 4, 4, 8, ... recursive sequence 4. y = (1.1)x geometric sequence 5. y = ()x exponential growth
Mathematics
2 answers:
rjkz [21]3 years ago
7 0

Answer:

1. recursive sequence       1. 0, 4, 4, 8, ..

2. arithmetic sequence     2. 2, 9, 16, 23, ...

3. geometric sequence     3. 3, 15, 75, 375, ...

4. exponential growth       4. y = (1.1) x

5. exponential decay         5. y =  (\frac{1}{4} ) x

PolarNik [594]3 years ago
4 0

Answer:

y = (1.1)x is exponential growth

I'm assuming that y = ()x is 1/4 because that's what I got. y = (1/4)x is Exponential decay.

3, 15, 75, 375, ... is a Geometric Sequence

0, 4, 4, 8, ... is an Arithmetic sequence

2, 9, 16, 23 is a recursive sequence.

Step-by-step explanation:

The first two I honestly just guessed but for recursive sequences, you have to look at each previous set of terms and run the math, whether that is Addition, Subtraction, Multiplication, or Division, whatever equation gets you to the next number in line is your equation, and you keep doing so until you've reached the end of the equation. Ex: 2+7=9, 9+16=23.

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When 21 is subtracted from the square of a number, the result is 4 times the number. Find the positive solution.
wel

Let x = your number.

x^2 - 21 = 4x. Subtract 4x from both sides.

x^2 - 4x - 21 = 0. Factor.

(x - 7) (x + 3) = 0. Set each term to 0.

x + 3 = 0. Subtract 3 from both sides.

x = -3. This is the negative solution.

Set the other term equal to zero.

x - 7 = 0. Add 7 to each side.

x = 7. This is the positive solution.

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3 years ago
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3 years ago
Please Answer ASAP ! Which point lies on the circle represented by the equation x2 + (y − 12)2 = 252?
Ivahew [28]

Answer:

Point (20 , -3) lies on the circle ⇒ (A)

Step-by-step explanation:

The point which lies on the circle must satisfy the equation of the circle

The equation of the circle is x² + (y - 12)² = 25²

<em>Take the left hand side and substitute x and y by the coordinates of each point the answer must equal the right hand side</em>

<em />

A. (20 , -3)

∵ x = 20

∵ y = -3

∴ (20)² + (-3 - 12)² = 400 + (-15)² = 400 + 225 = 625

∵ The right hand side is 25²

∵ 25² = 625

∴ The left hand side = The right hand side

∴ Point (20 , -3) satisfy the equation of the circle

∴ Point (20 , -3) lies on the circle

B. (-7 , 24)

∵ x = -7

∵ y = 24

∴ (-7)² + (24 - 12)² = 49 + (12)² = 49 + 144 = 193

∵ The right hand side is 25² = 625

∴ Point (-7 , 24) does not lie on the circle

C. (0 , 13)

∵ x = 0

∵ y = 13

∴ (0)² + (13 - 12)² = 0 + (1)² = 0 + 1 = 1

∵ The right hand side is 25² = 625

∴ Point (0 , 13) does not lie on the circle

D. (-25 , -13)

∵ x = -25

∵ y = -13

∴ (-25)² + (-13 - 12)² = 625 + (-25)² = 625 + 625 = 1250

∵ The right hand side is 25² = 625

∴ Point (-25 , -13) does not lie on the circle

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