Answer:
the answer that i find is 17-3x
First, start with plugging K's value in:
x-1/3 = k
x-1/3 = 3
Then solve to get the x alone:
x-1/3 *3 = 3 *3
x-1 = 9
x-1 +1 = 9+1
x = 10
(& because I'm not entirely sure about what the equation says....i'll solve the another way.....)
x-1/3 = 3
x-1/3 +1/3 = 3 +1/3
x = 3 1/3
Answer:
-3
Step-by-step explanation:
Since the - in -7 and the subtraction sign - are the same, you have to group them so now it is + (positive). -10 + 7 = -3
Answer:
75
Step-by-step explanation:
If the area of ABCD is equal to 45, then the perimeter of EFG is equal to x * 1.5 = 45. 45 / 1.5 = 30, so the perimeter of EFG is equal to 30. This means that each side is equal to 10.
The height of the equilateral triangle EFG creates two 30-60-90 triangles, each with a hypotenuse of 10 and a short side equal to 5. We know that the long side of the 30-60-90 triangle (here the height of EFG) is equal to √3 times the short side, or 5√3.
We then apply the formula for the area of a triangle, which is 1/2 * b * h. We get 1/2 * 10 * 5√3 = 5 * 5√3 = 25√3.
In general, the height of an equilateral triangle is equal to √3 / 2 times a side of the equilateral triangle. The area of an equilateral triangle is equal to 1/2 * √3s/ 2 * s = √3s2/4.