Answer:
1). Option A
2). Option B
Step-by-step explanation:
Question 1
Rule for the dilation of a point by a scale factor 'k' is given by the rule,
(x, y) → (kx, ky)
By this rule image of point A when dilated by the scale factor = 1.25,
A(-12, -8) → A'[(-12 × 1.25), (-8 × 1.25)]
→ A'(-15, -10)
Option A will be the answer.
Question 2
Scale factor = 
From the figure attached,
Scale factor = 
= 
=
Therefore, rule for the dilation of ABC to form image triangle A'B'C' will be,
(x, y) → 
Option B will be the answer.
Answer:
yes, that is correct
Step-by-step explanation:
- (20÷39) = - 0.513
- 0.513 * 1.43 = - 0.734 ~ - 0.75
Amplitude: 1/4 (= |a|)
Frequency: 1/2 (= |b|)
Period: 4pi (= 2pi/|b|)
Well by the looks of it The missing angle is 70 degrees. I say this because 110 + 70 = 180. If you were asking what were the two angles just divide.