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4 years ago

What is the difference between 4x and x4? Elavuate both of these expressions when x epauls 2.

2 answers:

5 0

Hey there! :D

Plug in x for 2.

4x= 4(2)

x^4= (2^4)

Evaluate.

4x= 8 2^4= 16

Now, subtract the difference.

16-8= 4

The difference is 4.

I hope this helps!
~kaikers

GenaCL600 [577]4 years ago

4 0

4x is substitution and x4 is multiplication

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Compute how many 7-digit numbers can be made from the digits 1, 2, 3, 4, 5, 6, 7 if there is no repetition and the odd digits mu

lisabon 2012 [21]

Answer:

Number of 7-digit numbers that can be made from the digit is 576

Step-by-step explanation:

Given the data in the question;

digits ⇒ 1, 2, 3, 4, 5, 6, 7

Number of odd numbers in the given digits = 4

Number of even numbers in the given digits = 3

now, we take the odd digits as a single unit.

so, number of ways the odd digits can be arranged with the unit will be 4!.

Now, lets consider the unit of 4 odd digits with 3 even digits.

there are 4 units.

so the number of possible arrangements of these 4 units = 4!

hence, Number of 7-digit numbers that can be made from the digits will be;

⇒ Number of possible arrangements of 4 units × Number of ways in which the odd digits can be arranged within the unit.

⇒ 4! × 4!

⇒ 576

Therefore, Number of 7-digit numbers that can be made from the digit is 576

3 0

3 years ago

The function d(h)=50+45hd(h)=50+45h represents the distance a family traveled, in miles, h hours after they stopped for lunch.

Anna [14]

<span>Given the function d(h)=50+45 represents the distance a family traveled, in miles, h hours after they stopped for lunch. The value 45 represents the speed they are traveling in miles per hour. So if the function will be graph, the 45 represents the slope of the line.</span>

5 0

3 years ago

Read 2 more answers

A cyclist rides her bike at a speed of 36 kilometers per hour. What is this speed in meters per second? How many meters will the

Andre45 [30]

Given that speed of the cyclist = 36 kilometers per hour.

Now question says to find the speed in meters per second.

We know that 1 kilometer = 1000 meter

and 1 hour = 3600 seconds

so to convert 36 kilometers per hour into meter per second, we will multiply 36 by 1000/3600

36*1000/3600

=36*10/36

=10

Hence final answer is speed = 10 meters per second.

That 10 meters per second means cyclist will travel 10 meters in 1 second.

Now to find distance travelled in 5 seconds, we just need to multiply 10 and 5

So the final answer will be 10*5 or 50 meters.

3 0

3 years ago

100 POINTS PLEASE HELP ASAP!!!!

Alika [10]

Answer: To clear an equation of decimals, multiply each term on both sides by the power of ten that will make all the decimals whole numbers. In our example above, if we multiply .25 by 100, we will get 25, a whole number. Since each decimal only goes to the hundredths place, 100 will work for all three terms.

So let's multiply each term by 100 to clear the decimals:

(100)0.25x + (100)0.35 = (100)(-0.29)

25x + 35 = -29

Now we can solve the equation as normal:

25x + 35 - 35 = -29 - 35

25x = -64

x = -2.56 Since the original was in decimal form, the answer should most likely also be in decimal form.

Let's look at one more:

1.75x + 4 = 6.2

We have to think a little more carefully about what multiple of ten to use here. 6.2 only needs to be multiplied by 10, but 1.25 needs 100, so we will multiply every term by 100. Don't forget to multiply the 4 by 100 as well.

(100)(1.75x) + (100)(4) = (100)(6.2)

175x + 400 = 620

We had to be extra careful as we multiplied by 100. Now we can solve the equation as normal:

175x + 400 - 400 = 620 - 400

175x = 220

x = 1.26

Step-by-step explanation:

8 0

3 years ago

A camera attached to a telescope photographs a stars image once every .045 seconds. How many complete images can the camera capt

padilas [110]

Writing and solving an equation of ratios would seem to be the best way to go.

0.045 sec 3 sec
------------- = ------------
1 image x

Then 0.045x = 3, and x = 66 2/3 images, best rounded down to 66 images.

4 0

3 years ago