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3 years ago

Which tables could be used to verify that the functions they represent are inverses of each other? Select two

Mathematics

1 answer:

devlian [24]3 years ago

4 0

<h3>Answers: C and D</h3>

Why? Because they are mirrors of each other. In other words, one table has its x and y row swapped compared to the other table.

The input x = -120 leads to the output y = 627 in table C. Then in table D, we have the input x = 627 to go the output y = -120. Refer to the first column of each table mentioned. The same applies for the other columns as well. The inverse table undoes everything the original table does.

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The length of one base of a trapezoid is 19 less than five times the length of the other base. If the trapezoid has a height of

ycow [4]

The length of the longer base is 41 ft.

<u><em>Explanation</em></u>

Lets assume, length of one base is $x$ ft.

As, another base is 19 less than five times the length of this base, so the length of another base $= (5x- 19) ft.$

The trapezoid has a height of 18 ft and area of 477 ft²

Formula for Area of trapezoid, $A=\frac{1}{2} (a+b)*h$ , where $a, b$ = Two bases of trapezoid and $h$ = height of the trapezoid.

Given in the question: $A= 477$ and $h= 18$

We have also two bases as: $a= x$ and $b= 5x-19$

So, according to the above formula...

$A= \frac{1}{2}(a+b)h\\\\ 477=\frac{1}{2}(x+5x-19)*18\\\\ 477=9(6x-19)\\\\477= 54x-171\\\\477+171=54x\\\\648=54x\\\\x=\frac{648}{54} = 12$

So, length of one base is $12 ft$ and another base $=(5*12-19)ft =(60-19)ft = 41 ft$

That means, the length of the longer base is 41 ft.

8 0

3 years ago

HELP RQQQQQQQQQQ plzzzzzz

geniusboy [140]

Answer:

5 x - 2x + 7 - x = 2x + 7

Step-by-step explanation:

simplify

(5x - 2x - x) = 2x

2x + 7 = 2x + 7

8 0

3 years ago

How many triangles can be constructed with angles measuring 50,90,40

inn [45]

Only two triangles:
The 90* angle is stable, so you can change only the position of the 50* and 40* angles.
1 triangle: 40* is right to the 90*
2 triangle: 40* is left to the 90*

Hope this helped you!

5 0

3 years ago

There are m months in a year, w weeks in a month and d days in a week

WARRIOR [948]

Answer:

365 days in a year

366 days in a leap year

Step-by-step explanation:

7 0

3 years ago

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Find the height of the triangle