Find an equation in standard form for the hyperbola with vertices at (0, ±9) and foci at (0, ±10).

A. y squared over 81 minus x squared over 100 = 1
B. y squared over 81 minus x squared over 19 = 1
C. y squared over 19 minus x squared over 81 = 1
D. y squared over 100 minus x squared over 81 = 1

alot

step-by-step explanation:

its a wood chuck that can chuck wood

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.