Answer: 36 units squared.
Explanation:
Area of a traingle is given by,
| 0.5{x1(y2-y3) + x2(y3-y1) + x3(y1-y2)} |
Accepting the values of the coordinates in x's and y's,
x1 =0, y1=0
x2=3, y2=8
x3 =9, y3=0
= | 0.5 × (-72)|
= 36 unit squared.
All this means is (f(x)) + (g(x))
2x-1+ x^2-3x-2=
=== x^2 - x -3
f(x) = -x + 2
f(-1) This means that they want you to find the value of f(x) or y when x = -1.
f(x) = -x + 2 Substitute/plug in -1 into "x" since x = -1
f(-1) = -(-1) + 2 (two negative signs cancel each other out and become positive)
f(-1) = 1 + 2
f(-1) = 3
Answer:
Step-by-step explanation:
step 1
Find the surface area of one hanging lantern
we know that
The surface area of a cone (hanging lantern) is equal to
we have
assume
substitute the values
step 2
Find the surface area of the three hanging lanterns
To solve this, we simply need to break down the problem. Doing this will yield us the correct equation.
"8.46 less than"
This shows we are going to have something subtracted by 8.46.
-8.46
"the product of"
This shows we will have a multiplication problem.
*-8.46
"42 and x"
This shows the values that we will be multiplying
42*x-8.46
Now we can simplify
42x-8.46
Using the logic above, we can see that the expression to represent the phrase is 42x-8.46.