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Gala2k [10]
3 years ago
15

Find a formula for h(x). Give an exact expression. Help please

Mathematics
1 answer:
Fed [463]3 years ago
4 0

Answer:

y=\frac{9}{2}\cos \left(\frac{4}{3}x+\frac{2\pi }{3}\right)+\frac{1}{2}\\\\Or\\\\y=4.5\cos \left(1.33x+0.67\pi \right)+0.5

Step-by-step explanation:

See the attachment below.

Best Regards!

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If g(x) is the inverse of f(x), what is the value of f(g(2))?
Elan Coil [88]

Answer:

2

Step-by-step explanation:

So to figure this out we just need to flip the values of x and y in the table and then redefine that as the function g(x), because an inverse is essentially the reverse!

So if we flipped x and y's for f(x). We would see that our output or y of g(x) is -3 when x = 2, or in other words g(2) = -3. This means that we are now going to solve for when f(-3). So now lets look at the table and find the value at x = -3 for f(x). This value is 2, so the value of f(g(2)) = 2.

*In the future*

When you have a composite function of two inverses they essentially cancel out and would leave whatever the value of x is. So if we know f(x) and g(x) were inverses the value of f(g(2)) would just be 2.

For example:

ln(x) and e^x are inverses so if I had a composition like this:

e^{ln(2)}

The answer to this would be 2 because these inverse functions "'cancel" out

So

e^{ln2} = 2

8 0
3 years ago
Read 2 more answers
Can someone help me with these please.
ELEN [110]

Answer: Barbara did not include a variable in the term 1.49, which must represents the number of bottles of iced tea she needs to sell.

Step-by-step explanation:

Let be "x" the number of bottle of water Barbara needs to sell and "y"  the number of bottle of iced tea she needs to sell.

She sells iced tea for $1.49 per bottle and water for $1.25 per bottle, so she can write the following equation in order to calculate the number of bottles she needs to sell to earn $100:

1.25x + 1.49y = 100

Since Barbara wrote this equation:

1.25x + 1.49 = 100

We can conclude that the error Barbara made in writing the equation was: She did not include a variable in the term 1.49, which must represents the number of bottles of iced tea she needs to sell.

8 0
3 years ago
The town recreation committee raised money to increase the circumference of the jogger’s park, which was initially 1000 feet. It
yawa3891 [41]

Answer:C. 3000 ft

Step-by-step explanation:

First, find the radius of the circumference.

By dividing 1000 ft by 2, which is 500, and that is the radius.

Then you multiply the radius by 3, which is 1500.

Finally, you want the circumference, to find the circumference you need to multiply the radius by 2, which is 3000 ft.

That’s it.

3 0
3 years ago
Which of the following formulas would find the surface are of a right cylinder where h is the height, r is the radius, and BA is
xz_007 [3.2K]
A=2πrh+2πr is the formula for cylindrical surface area
8 0
3 years ago
Can someone please help with
Fantom [35]

The answer is B, 4000.                                        

3 0
3 years ago
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