Perpendicular liner intersect to form which kind of angle

a. acute
b. obtuse
c. right
d. reflex

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

What is the y intercept of f(x)=(1/2)^x?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.