Answer:20
Step-by-step explanation: If u need help again: https://mathpapa.com/algebra-calculator.html
A set of ordered pairs, like the ones shown, represents a function only if each of the first coordinates is not repeated.
For example {(2, 5), (7, 8)} is a function, but {(2, 3), (6, 8), (2, -1)} is not because 2 is repeated.
We can check that each set of pairs we are given, are functions.
The inverses of each of these sets would be :
<span>{(–2, –1), (4, 0), (3, 1), (14, 5), (4, 7)} 4 repeats
{(2, -1), (4, 0), (5, 1), (4, 5), (2, 7)} 4 and 2 repeat
{(3, -1), (4, 0), (14, 1), (6, 5), (2, 7)} no repetition of 1st coordinates
{(4, -1), (4, 0), (2, 1), (3, 5), (1, 7)} 4 repeats
</span>
So only the inverse of <span>{(–1, 3), (0, 4), (1, 14), (5, 6), (7, 2)} is also a function</span>
Answer:
We are given a triangle having vertex at point M.
The base of the triangle is MN which is 3 units long.
Now, the height of the triangle is given as 5 units.
So, plotting a line starting at M, which is 5 units long towards the left or right will give us the height of the triangle.
Moreover, as the base is 3 units long.
We will have that the point N is 3 units down or up from the point M.
Using Pythagoras theorem, get that the length of the third side is 5.8 units.
After joining these points and constructing straight lines, we will get the following right angles triangle having base 3 units and height 5 units.