Answer:
21
Step-by-step explanation:
the formula for a triangle is A=1/2bh
so u multiply the base times the height then get 42. if u multiply anything by 1/2 or .5 its the same thing as dividing. so you divide 42 by 2 and get 21.
The answer is A because it is -1 because it would go to the right when you add two
Answer:
0
Step-by-step explanation:
Solution:-
We are given two functions as follows:

We need to determine the composite function defined as ( g - f ) ( x ). To determine this function we need to make sure that both function exist for all real positive value of x.
The function f ( x ) is a quadratic function which has real values for all values of x. Similarly, function g ( x ) is a linear line that starts from the origin. Hence, both functions are defined over the domain ( -∞, ∞ )
We will perform arithmetic operation of subtracting function f ( x ) from g ( x ) as follows:
![[ g - f ] ( x ) = g ( x ) - f ( x )\\\\\\( g - f ) ( x ) = x^2 - 15 - 2x\\\\](https://tex.z-dn.net/?f=%5B%20g%20-%20f%20%5D%20%28%20x%20%29%20%3D%20g%20%28%20x%20%29%20-%20f%20%28%20x%20%29%5C%5C%5C%5C%5C%5C%28%20g%20-%20f%20%29%20%28%20x%20%29%20%3D%20x%5E2%20-%2015%20-%202x%5C%5C%5C%5C)
Now evaluate the above determined function at x = -3 as follows:

Answer:
look below
Step-by-step explanation:
first dot ob left is 5 and -5 the second one on the right is 5 and 5
Answer:
y=4
Step-by-step explanation:
Without x in an linear equation, it is just a horizontal line. This equation goes through the points (-5,4).