All you have to do in this problem, is know what s is, we find this by using the equation: s+8+2s+s=84 (we use 84 because it is the perimeter of the triangle.
Perimeter= 84 inches
1st side: 19
2nd side: 19+8=27
3rd side: 2*19=38
When given 2 sides of a triangle, the 3rd side must be
greater than difference of the 2 sides and
less than sum of the other 2 sides
Therefore, the answer is D (or 3)
Answer:
-63x +28
Step-by-step explanation:
-7(9x-4)
We cannot solve, but we can simplify
Distribute
-7 * 9x -7 * (-4)
-63x +28
The area of the circle is <span>112.98 m squared</span>
For a) simply substitute the speed of the car into the equation to get the braking distance.
For b) rearrange the equation to solve for x by substituting the braking distance in.
Rearranged, the equation looks like this: x = √(9d)
For c) use a calculator to find the precise value of x in question b.