Given points O(0,0), A(4, 12), and B(-9,3), are OA and OB perpendicular?*
A. OA and OB are perpendicular because ala2+b1b2=0.
B. OA and OB are not perpendicular because a1 b1+ a2b270
C. OA and OB are perpendicular because al b1+ a2b2 =0.
D. OA and OB are not perpendicular because ala2+b1b280.
This is a required question

Drag each tile into the correct box. not all tiles will be used. find the tables with unit rates greater than the unit rate in the graph. then tenge these tables in order from least to greatest unit rate

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y

In a coastal town, the humidity, measured in grams of water per kilogram of air, increases by 43% for every 1 degree celsius increase in temperature. a scientist observes that the humidity on monday morning is 5.75 grams per kilogram. he wants to know how much the temperature must increase for the humidity to reach at least 49.17 grams per kilogram. let t represent the increase in temperature, in degrees celsius, from monday morning's observation. write an inequality to represent the situation, and use it to determine the desired temperature increase.