Tatyanna's grandfather gave her one penny on the day she was born. He plans to double the amount he gives her every day. Estimate how much whe will receive from her grandfather on the 12th day of her life.

23 pennies

Step-by-step explanation:

Fro this question, it says that tatyannas grandfather gave her a single penny on the day that she was born,but he plans to double that amount from the subsequent days,and the question asks what amount will be left with tatyanna on her 12th day.

Here the first day she received one penny,

The second day,the amount was doubled(she received 2 pennies)

The third day she also received 2 pennies and the fourth day as well up until the twelveth day.

What it means here is that for eleven straight days, tatyanna received twice the amount that she got on the first day.

11×2=22 + 1(the one here is that which she received on her first day)

= 23 pennies

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

2/3

step-by-step explanation: