Franklin signed the delclaration of independence in 1776.when he died in 1790,he was 84 years old. benjamin franklin was the oldest man to sign the delclaration of independence. how old was he when he signed it?

Chemistry balance then what type of reaction are they i don't know why it keeps saying math when i put chem

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left