Answer:
f(-2) = 5
Step-by-step explanation:
we are given with a function f(x) = - 4x – 3
we are asked to determine
f(-2)
in order to find f(-2) we will substitute x = -2 in our function f(x)
f(x)=-4x-3
f(-2) = -4(-2)-3
=8-3
=5
Hence f(-2) = 5
Answer:
The equation of a circle:
Step-by-step explanation:
The equation of a circle:
(where the center is known as and the radius, known as ).
-Since you already have the center and the radius, use them for the equation of a circle:
Center:
Radius:
After you have the equation of a circle, simplify the radius by the exponent :
So, you have found the equation of a circle.
The answer:
15.157059248=15.2(When rounded to the nearest tenth)
Answer:
25 sq. units
Step-by-step explanation:
Because it is a square, you only have to find one if its side lengths. Let's say you choose to find the distance between B and C. You'll be finding the length of a hypotenuse due to the fact that the two points are diagonal from each other. Use the x and y values to discover the lengths of the legs of the triangle. In this instance, they are 3 and 4. Using background knowledge of the properties of triangles, I know that the hypotenuse of a right triangle with legs of 3 and 4 must be 5. Therefore, the side length of this square is 5. To find the area of a square, simply multiply its side length by itself. 5 x 5 = 25!