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Alekssandra [29.7K]
3 years ago
6

If x represents a number, then write an expression for a number that is three more than the number

Mathematics
2 answers:
myrzilka [38]3 years ago
6 0
Saying "a number" is the same as saying "x"

"Three more than a number" is the same as "three more than x"

If you have three more of something (say, marbles) than someone else, then you have their number of marbles plus three more.

Then, "Three more than x" is the same as "three plus x", or "3 + x"

Hope this helps! :)
Luden [163]3 years ago
3 0
Watch this carefully, before it's gone:

The expression for " three more than 'x' " is . . . . . <em>( x + 3 )</em>  .

Did you see it go by ?
Here it is again:

The expression for " three more than 'x' " is . . . . . <em>( x + 3 )</em>  .

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Danika concludes that the following functions are inverses of each other because f(g(x)) = x. Do you agree with Danika? Explain
arsen [322]
We cannot agree with Danika. Why? Well, The reasoning is given as follows:

Two functions are inverses of each other if and only if it is true that the composition function is given by:

f(g(x))=x

Everything is ok up to this point, right?. But let's prove that this is not fulfilled for these functions, then:

f(x)=\left | x \right | \\ \\ g(x)=-x \\ \\ f(g(x))=\left| -x \right |=\left | -1 \right | \left | x \right |=\left | x \right |  \\ \\ \therefore f(g(x))=\left | x \right | \neq x
<span>
As you can see we did not obtain the function that matches the definition of </span>inverse functions. For that reason <em>we can't agree with Danika</em>.
5 0
3 years ago
Read 2 more answers
A line passes through the point (-3, -3) and has a slope of ½​
rewona [7]

Answer:

y = 1/2x - 3/2

Step-by-step explanation:

y + 3 = 1/2 (x +3)

distribute and simplify

y = 1/2 x - 3/2

8 0
3 years ago
PLEASE HELP !! BRAINLIEST AND 10 POINTS
Bumek [7]
POINT A I had the same question in my math class !!!
8 0
3 years ago
Please helped this is for my math final.
hammer [34]

Answer:

[-8,8]

Step-by-step explanation:

6 0
3 years ago
18. You are standing beside the Colorado River, 400 feet
Veseljchak [2.6K]
<h3>Answer: B. 781.6 feet approximately</h3>

=======================================================

Work Shown:

The horizontal portion is 400+166 = 566 feet. Label this as 'a', so a = 566. The vertical side is unknown, so b = x. The hypotenuse is c = 965

Use the pythagorean theorem

a^2+b^2 = c^2

566^2+x^2 = 965^2

x^2 = 965^2 - 566^2

x = sqrt( 965^2 - 566^2 )

x = 781.58108984289 which is approximate

x = 781.6 feet when rounding to one decimal place

6 0
3 years ago
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