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Akimi4 [234]
3 years ago
14

Find f(-2) for f(x) = 2(4)^x

Mathematics
2 answers:
emmainna [20.7K]3 years ago
8 0

Answer:

f(- 2) = \frac{1}{8}

Step-by-step explanation:

To find f(- 2) substitute x = - 2 into f(x) , that is

f(- 2) = 2 (4)^{-2} = 2 × \frac{1}{4^2} = 2 × \frac{1}{16} = \frac{2}{16} = \frac{1}{8}

stepladder [879]3 years ago
3 0

Answer:

2(4)^-2

=2/4^2

2/16

1/8

thanks

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MT is a diameter of OE. Calculate the measure of ZMTH.
irga5000 [103]

Answer:

A. 17°

Step-by-step explanation:

Recall: measure of an inscribed angle = ½(intercepted arc)

Inscribed angle = m<MTH

Intercepted arc = arc MH = 34°

Therefore,

m<MTH = ½(Arc MH)

Substitute

m<MTH = ½(34)

m<MTH = 17°

8 0
2 years ago
Are the point (-1, 1) and (3, 1/5) solutions to the equation 3x-5y=8
Sati [7]
The (3, 1/5) would be a solution while the (-1,1) wouldn’t because when you write this equation in the slope intercept form which is y = 3/5x - 8/5

1/5 = 3/5 (3) - 8/5

would end up with 1/5 = 1/5 which is write

While,

1 = 3/5 (-1) - 8/5

Would end up with
1 = 11/5 which is wrong



5 0
3 years ago
The axis of the symmetry for a function in the form f(x)=x^2+4x-5 is x=-2
Juliette [100K]

Answer:

This is a true statement.

Step-by-step explanation:

In order to find the line of symmetry, use the symmetry formula.

-b/2a

The variable a would be the coefficient of x^2 and b would be the coefficient of x.

-(4)/2(1)

-4/2

-2

6 0
3 years ago
Please show your work for brainliest!!
Digiron [165]

Answer:

About 11.299 hours.

Step-by-step explanation:

To solve this problem, you can set up an equation to model the decay of the medicine. Let's call the time that medicine has been in the body x.

(1-0.0595)^x=0.5

0.9405^x=0.5

Taking the log x of both sides, you get

x=\log_{0.9405} 0.5

x\approx 11.299 hours. Hope this helps!

5 0
3 years ago
What is the answer to this
NeX [460]
The answer would be the first choice. When you reflect a shape across the x-axis, the y coordinates of every points/vertices become of the opposite of what they usually were.
For example, the y coordinate in (1, -5) {{-5 being the y coordinate) once reflected upon the x axis would be (1, 5).

On the other hand, if the y coordinate were positive it would become negative.
5 0
3 years ago
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