Since the diver is 19 metres below the surface of the water, then he will need to travel 19 metres to reach the surface.
3y (y is the unknown number but it represents one number only... and also 3y represents 3 multiply by y)
Answer:
If an image of a triangle is congruent to the pre-image, then the scale factor of the dilation must be n = 1. Dilating an image with a dilation factor of 1 will result to the same image and that ensures the congruency between the pre-image and the dilated image.
Step-by-step explanation:
