For the reaction A → products, the following data were collected. time, s [A]t , M 0 1.00 1.00 0.430 2.00 0.270 3.00 0.200 4.00 0.160 What is the half-life for this reaction? 1. 0.922 s 2. 0.752 s 3. 1.08 s 4. 0.521 s

∠1 and ∠2 are complementary. ∠1=x°∠2=(3x+30)° select from the drop down menu to correctly answer the question. what is the value of x? . a.15 b.25 c.30 d.40 e.55

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false