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2 years ago

Evaluate the expression for the given value of x 7x + 8 for x = 2

Mathematics

2 answers:

Pepsi [2]2 years ago

6 0

Replace x with 2
Then you’ll get: 7(2)+8
7x2=14
14+8=22
The answer is 22

Anit [1.1K]2 years ago

4 0

Answer:

Step-by-step explanation:

Since x = 2, we can tell that x is equal to 2.

So this is basically asking 7 times 2 plus 8

7(2) + 8 = ?

14 + 8 = 22

Hope this helps!

You might be interested in

The National Center for Educational Statistics surveyed 5400 college graduates about the lengths of time required to earn their

fenix001 [56]

Answer:

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.645*\frac{1.9}{\sqrt{4500}} = 0.04$

The lower end of the interval is the sample mean subtracted by M. So it is 5.4 - 0.04 = 5.36 years.

The upper end of the interval is the sample mean added to M. So it is 5.4 + 0.04 = 5.44 years.

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

3 0

3 years ago

NEED ANSWERED ASAP!!!!!!!

Igoryamba

Answer:

5.25 is the lenght of the arc AB.

Step-by-step explanation:

First, since we are told the answer should be expressed in radians, we need to convert the arc angle into radians, we do that by multiplying the angle by π and dividing by 180.

60° * π/180 = 1.05rad

Now, there is a simple formula to calculate the arc lenght, A = Ф*r, where:

A = arc lenght

Ф = arc angle (60°=1.05rad)

r = radius (5cm)

A = 1.05*5cm

A = 5.25cm

5 0

3 years ago

Greatest common factor of 7 and 7

Zina [86]

Answer:

Step-by-step explanation:

It is the same number, all you have to do is write out the factors but if its ever the same number just know itll always be that number

3 0

3 years ago

A) x= all real #s<br>B) x>0<br>C) x=5<br>D) x=12

sashaice [31]

Answer:

Set of all real numbers

Step-by-step explanation:

When we talk of domain, we mean the possible values of x that the equation can take without being undefined

So x-values that makes the equation defined are the domain of the graph

From the diagram, we can see that the graph extends from negative infinity to positive infinity

What this mean is that the possible values here come from the top right and extends to the left

So this means that the range of possible values are the set of all real numbers

5 0

2 years ago

A car is said to get 25 miles per gallon on a highway, but this value can fluctuate by 6 miles per gallon, at most. Which of the

Pepsi [2]

Answer:

$| x1 -25\ | \leq\ 6$ is the correct answer to the given question.

Step-by-step explanation:

Missing information

In this question options are missing.Following are the option

(a) $| x1 -25\ | \leq\ 6$

(b) $| x1 - 6 |\ > 25$

(d) $| x1 +25 |\ > 6$

As mention in the question On the highway, car is said to get 25 miles per gallon

We assume $x1= 25$

also that the value of $x1$ is fluctuate by 6 miles per gallon

$x1 \leq \ 25\ \pm\ 6$

This can be written as

$x1\ -25 \leq \ \pm\ 6$

Therefore

$| x1 -25\ | \leq\ 6$ is the answer

8 0

2 years ago

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