Σ(n = 1) 1. Expand
0 + 1 + 2 + 3 + 4 + 5 + 6
0 + 1 + 2 + 3 +4 + 5
O
(-1) + (-2) + (-3) + (-4) + (-5) + (-6)
1 + 2 + 3 + 4 + 5 + 6

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

I’m really confused and need to learn this