A'B'C'D after the translation. Corresponding parts of congruent figures are congruent. Angle BCD corresponds to angle B'C'D', so angle BCD is congruent to angle B'C'D'
See attached. The graph confirms this.
(i) The mean is
The variance is
Compute the second moment :
Then the variance is
(ii) For a random variable , where are constants, we have
and
Then for , we have
Answer:
- $14 discount
- $56 discounted price
Step-by-step explanation:
The amount of the discount is ...
20% of $70 = 0.20·$70 = $14 . . . discount
The discounted amount is ...
$70 -14 = $56 . . . discounted price
This means the shape will move 2 grids to the right, and 2 to the top. Point A will be about (2, 5)
260 + 353.6 = 613.6 that's your answer