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3 years ago

What is blank divided by 9 equals 5

Mathematics

2 answers:

Alinara [238K]3 years ago

6 0

45
9x5=45
45 divided by 9 equals 5

Rudik [331]3 years ago

4 0

Answer:

45 divided by 9 equals 5

Step-by-step explanation:

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Solve y=f(x) for x . f(x)=23x+4 x= Question 2 Find the input when the output is 2. The input is .

Fantom [35]

Let's find $f(x) = 2$ , which is essentially what the problem is asking, what $x$ corresponds to an output of 2.

Let's solve below:

$f(x) = 2$

Setting up what we know

$23x + 4 = 2$

Substituting in $23x + 4$ for $f(x)$ (I'm not sure if this is the correct expression for $f(x)$ due to formatting issues)

$23x = -2$

Subtract 4 from both sides to make a step to isolate $x$ (what we are trying to find)

$x = - \frac{2}{23}$

Divide both sides of the equation by 23 to isolate $x$

Thus the input is $\boxed{x = - \frac{2}{23}}$ .

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3 years ago

Which of the following illustrates the truth value of the given statements? January is the first month of the year or December i

Dafna11 [192]

First, the need to determine if the statements are true or false.

1) January is the first month of the year. (This statement is true)
2) December is the last month of the year. (This statement is also true)

With this in mind we can determine that what will illustrate the truth value would be:

T T -> T

In other words, since the first statement is true and the second statement is also true then conjunction of both statements would be true.

5 0

3 years ago

Read 2 more answers

It takes a racecar 47 seconds to complete one lap on a 3,200-meter track. What is the racecar's average speed during the lap? A.

Trava [24]

The answer is (B) hope it helps

6 0

3 years ago

I need help please no links I will report

stellarik [79]

Answer: $1.45

Step-by-step explanation:

We start by subtracting the change from how much she payed for.

d = dollars | g = goldfish

$16d - 0.05d = 15.95d$

Then we divide by the goldfish

$\frac{15.95d}{11g} = 1.45d$

Our answer is 1.45!

Also, warning, the people who go into the comments saying to download something from bitly, do not do it. They are viruses and will not get the answer, please only report their answer and ignore them.

7 0

2 years ago

Construct a 99% confidence interval for the population mean, mu. Assume the population has a normal distribution. A group of 1

Zarrin [17]

Answer:

99% confidence interval for the population mean is [19.891 , 24.909].

Step-by-step explanation:

We are given that a group of 19 randomly selected students has a mean age of 22.4 years with a standard deviation of 3.8 years.

Assuming the population has a normal distribution.

Firstly, the pivotal quantity for 99% confidence interval for the population mean is given by;

P.Q. = $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean age of selected students = 22.4 years

s = sample standard deviation = 3.8 years

n = sample of students = 19

$\mu$ = population mean

Here for constructing 99% confidence interval we have used t statistics because we don't know about population standard deviation.

So, 99% confidence interval for the population mean, $\mu$ is ;

P(-2.878 < $t_1_8$ < 2.878) = 0.99 {As the critical value of t at 18 degree of

freedom are -2.878 & 2.878 with P = 0.5%}

P(-2.878 < $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ < 2.878) = 0.99

P( $-2.878 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X - \mu}$ < $2.878 \times {\frac{s}{\sqrt{n} } }$ ) = 0.99

P( $\bar X -2.878 \times {\frac{s}{\sqrt{n} }$ < $\mu$ < $\bar X +2.878 \times {\frac{s}{\sqrt{n} }$ ) = 0.99

99% confidence interval for $\mu$ = [ $\bar X -2.878 \times {\frac{s}{\sqrt{n} }$ , $\bar X +2.878 \times {\frac{s}{\sqrt{n} }$ ]

= [ $22.4 -2.878 \times {\frac{3.8}{\sqrt{19} }$ , $22.4 +2.878 \times {\frac{3.8}{\sqrt{19} }$ ]

= [19.891 , 24.909]

Therefore, 99% confidence interval for the population mean is [19.891 , 24.909].

6 0

3 years ago