3 years ago

For the following geometric sequence find the explicit formula. {12, -6, 3, ...}

Mathematics

1 answer:

Furkat [3]3 years ago

5 0

X divide by -2

this is your formula

x/ (-2)

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Use the information given to enter an equation in standard form.

Greeley [361]

Answer:

y = -2x + 25

Step-by-step explanation:

A standard equation can be in slope-intercept form: y = mx + b

m is the slope, b is the y-intercept.

Plug in the given slope.

y = -2x + b

To find b, plug in the given point (9, 7).

7 = -2(9) + b

Multiply.

7 = -18 + b

Add 18 to both sides to find b.

25 = b

Plug this into your standard equation.

y = -2x + 25

Check by plugging in the given point again.

7 = -2(9) + 25

7 = -18 + 25

7 = 7

Your answer is correct!

Hope this helps!

3 0

3 years ago

Write a cosine function that has a midline of 3, an amplitude of 4 and a period<br> of pi.

sergejj [24]

Answer:

$f(x)=4\cos(2x)+3$

Step-by-step explanation:

Using the general equation $f(x)=a\cos(bx+c)+d$ , we already know that $a=4$ and $d=3$ , but we need to find $b$ from the period:

$\frac{2\pi}{|b|}=\pi\\ 2\pi=b\pi\\2=b$

Hence, the cosine function is $f(x)=4\cos(2x)+3$

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2 years ago

Solve the equation. c4−5=4

nika2105 [10]

Answer:

$4c - 5 = 4$

$4c = 9$

$c = \frac{9}{4}$

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3 years ago

5x^2-7x=3x+8 is the equations linear

cestrela7 [59]

is there any answers or no?

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aliya0001 [1]

Answer:

800m brainlest mark me

Step-by-step explanation:

that's all I hope it's help

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3 years ago