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pantera1 [17]
2 years ago
12

68. What is the value of x?

Mathematics
1 answer:
Alik [6]2 years ago
5 0
The answer is

3x - 3x - 7
=-7
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Which exponential function is represented by the values in the table?
Goryan [66]

Answer:

\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x

Step-by-step explanation:

<u>Exponential Function</u>

The exponential function can be written with the general equation:

f(x)=A\cdot r^x

Where A is the value when x=0 and r>0 is the ratio. If r is greater than 1, the function is increasing, if r is less than 1, the function is decreasing.

The table shows the relation between values of x and values of the function y. Note that as x increases (one by one), y decreases with a ratio of 1/2. Only the last two choices have ratios of r=1/2. We only have to test which one of them has the correct value of y=4 when x=0.

Substituting in the third function:

\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x

\displaystyle f(0)=4\cdot\left(\frac{1}{2}\right)^0

f(0) = 4

This gives the correct value of f(0)=4.

Substituting in the fourth function:

\displaystyle f(x)=\frac{1}{2}\cdot\left(\frac{1}{2}\right)^x

\displaystyle f(0)=\frac{1}{2}\cdot\left(\frac{1}{2}\right)^0

f(0) = \frac{1}{2}

This choice is wrong

Correct choice:

\boxed{\displaystyle f(x)=4\cdot\left(\frac{1}{2}\right)^x}

8 0
3 years ago
What is the range of 34, 56, 13, 98, 75
Crank
The range is the highest number minus the lowest number

98 - 13 = 85 <==
3 0
3 years ago
Read 2 more answers
U=x+y/ky , solve for x
masya89 [10]

In the given equation the value of the x be a x = U*ky-y.

According to the statement

we have to find that the value of the x from the given statement.

So, For this purpose, we know that the

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

From the given information:

The given statement is

U=x+y/ky

now, rearrange the terms then

U*ky=x+y

U*ky-y = x

And then the value f the x become

x = U*ky-y.

So, In the given equation the value of the x be a x = U*ky-y.

Learn more about equation here

brainly.com/question/13763238

#SPJ9

4 0
1 year ago
The circumference of the circle-shaped rug is 69.08 inches.
adelina 88 [10]
We can find the diameter by dividing the circumference by 3.14
d = 22

Thus, our radius is 11.
r = 11

Now, let's use the area formula (3.14 \cdot r^2) to solve for the area.
a = 3.14 \cdot (11^2) = \boxed{379.94}
8 0
3 years ago
I will give brainliest 35 points The following graph represents the correlation between shoe size and height for 70 people.
Svetllana [295]

Answer:

Positive

Step-by-step explanation:

As height is increasing, shoe size is also increasing (positive slope)

Negative correlation is when one variable increases and the other decreases (negative slope)

5 0
3 years ago
Read 2 more answers
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