Remark
The easiest way to do this is just to find the x and y intercepts when the center of dilation is 0,0 and the scale factor is 1/2
Solution
On the x axis, the value of x is 8 before the dilation takes place. When you dilate by 1/2 x becomes 8*1/2 = 4
On the y axis, the value of y is -6 before the dilation takes place. When you dilate by 1/2, y becomes -6*1/2 = -3
Now join the points (4,0) and (0,-3) That is your new triangle with a dilation of 1/2.
The answer for question 1 is C. 18ft
for question 2 is B. 63ft
for question 3 is B. 45
and for question 4 is C. 23
Lastly for question 5 the answer is 14
Coefficient of the quadratic term clearly is -4 (ALTERNATIVE 2)
Wish I could help. :( But I'm not sure.
By definition, supplementary angles are those whose sum is 180°
Therefore, ∠2 = 180 - ∠1
2x + 4 = 180 - 124
2x = 52
x = 26°
