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3 years ago

Please help for 20 POINTS I would appreciate it if you put an answer you actually think is right :)

Mathematics

2 answers:

Oliga [24]3 years ago

8 0

It’s x!!!!!!!!!!!! !!!!!

Elina [12.6K]3 years ago

4 0

Answer: i would say that i think its x

Step-by-step explanation:

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Pedro has created the function f(x) = to represent the number of assignments he has completed, where x represents the number o

cluponka [151]

In order to find the inverse of a function,you always do this process. First you would right the normal equation out. After that,you switch the x and y terms around. Then you would solve like a normal 2-step or however many long equation. By flipping the x and y values,you get what the other variable creates

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4 years ago

The battery standby duration (in hours) of a new model of cell phone is known to be normally distributed. Ten pieces of such new

kap26 [50]

Answer:

$\mu = 47.17$

$\sigma = 2.31$

Step-by-step explanation:

Solving (a): The population mean

This is calculated as:

$\mu = \frac{\sum x}{n}$

So, we have:

$\mu = \frac{48.2+ 47.8 +45.6 +47.2 +49.3+51.2 +44.2 +45.4 +49.2 +43.6}{10}$

$\mu = \frac{471.7}{10}$

$\mu = 47.17$

Solving (b): The population standard deviation

This is calculated as:

$\sigma = \sqrt{\frac{\sum (x - \mu)^2}{n}}$

So, we have:

$\sigma = \sqrt{\frac{(48.2-47.17)^2 + (47.8-47.17)^2 +.........+(43.6-47.17)^2}{10}}$

$\sigma = \sqrt{\frac{53.521}{10}}$

$\sigma = \sqrt{5.3521$

$\sigma = 2.31$

4 0

3 years ago

If m∠8=23°, find the measure of each missing angle. Give your reasoning.

worty [1.4K]

this doesn't make sense

3 0

3 years ago

jenn will use 18 connecting cubes to make a model of a park. The model will be in the shape of a rectangle and will have height

lorasvet [3.4K]

To do this we need to find all the pairs of factors of 18.
These are:
- 18 and 1
- 9 and 2
- 6 and 3
From this we can see there are 3 ways of making a rectangle from 18 cubes

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4 years ago

Which of these values for p and a will cause the function f(x)=Pax to be an exponential growth function

vovikov84 [41]

The option are missing in the question. The options are :

A. P = 2, a = 1

B. $P=\frac{1}{2} ; a =\frac{1}{3}$

C. $P=\frac{1}{2} ; a =1$

D. P = 2, a = 3

Solution :

The given function is $f(x)= Pa^x$

So for the function to be an exponential growth, a should be a positive number and should be larger than 1. If it less than 1 or a fraction, then it is a decay. If the value of a is negative, then it would be between positive and negative alternately.

When the four option being substituted in the function, we get

A). It is a constant function since $2(1^x)=2$

B). Here, the value of a is a fraction which is less than 1, so it is a decay function. $f(x)=\frac{1}{2}\left(\frac{1}{3}\right)^x$

C). It is a constant function since the value of a is 1.

D). Here a = 3. So substituting, as the value of x increases by 1, the value of the function, f(x) increases by 3 times.

$f(x)=2(3)^x$

Therefore, option (D). represents an exponential function.

4 0

3 years ago