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2 years ago

The table shows how many hours Sara spent at several activities one Saturday.

Mathematics

1 answer:

Aleksandr-060686 [28]2 years ago

3 0

Answer:

Its2 for every 3

Step-by-step explanation:

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Need help with a simple problem 2^x=3^x+1

KiRa [710]

For $x\ \textgreater \ 0$ , $2^x\ \textless \ 3^x$ , all the more $2^x\ \textless \ 3^x+1$ , therefore no solution.

For $x=0$ , we have $2^0=3^0+1 \Rightarrow 1=1+1 \Rightarrow 1=2$ . Obviously that' false.

For $x\ \textless \ 0$ both $2^x$ and $3^x$ , where $2^x\ \textgreater \ 3^x$ , belong to the range $(0,1)$ , then $3^x+1$ belong to the range $(1,2)$ .
Those ranges don't have a common part, therefore, again, no solution.

So, the equation $2^x=3^x+1$ doesn't have a solution.

4 0

2 years ago

Define the random variables X and X in words. X is the amount of time an individual waits at the courthouse to be called for ser

densk [106]

<u>Question</u>

Suppose that a committee is studying whether or not there is excessive time waste in our judicial system. It is interested in the mean amount of time individuals spend at the courthouse waiting to be called for jury duty. The committee randomly surveyed 81 people who recently served as jurors. The sample mean wait time was 4 hours with a sample standard deviation of 1.2 hours. Define the random variables X and $\bar{X}$ in words.

Answer:

(B)

X is the amount of time an individual waits at the courthouse to be called for service.
$\bar{X}$ is the mean wait time for a sample of individuals.

Step-by-step explanation:

The random variable X is the amount of time for which each of the prospective juror waits at the courthouse before being called for service.

$\bar{X}$ is the mean wait time for a the given sample of individuals. In the case given,

5 0

2 years ago

A polynomial equation has only imaginary roots and no real root. Which options CANNOT be the degree of that polynomial? (Select

puteri [66]

we know that

Imaginary roots will come in pairs, and so the degree must be even.

therefore

the answer is

options

$B. 3$

$E. 7$

7 0

2 years ago

Read 2 more answers

What is the mean of the values in the dot plot?

sergij07 [2.7K]

First, write out all the values:
40,41,41,45,48,48,49,49,49,50

Then to find the mean, you add all the values and divide by the number of values (there are 10 values)
(40+41+41+45+48+48+49+49+49+50)/10
460/10
=46

Hope this helps

3 0

2 years ago

write the missing exponent , 1/169 (fraction) = (1/13)_ <-- blank (what exponent goes in?) the picture's there to give an ide

Dafna1 [17]

The answer is 2.

............

3 0

2 years ago