What is 3,920,000,000,000 in scientific notation? a. 3.92x10^10 b. 3.92x10^12 c. 3.92x10^-10 d. 3.92x10^-12

1. are the triangles similar and if so why? what is the value of x? show your work.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?