The top shelf of a bookcase holds 6 fiction and 4 nonfiction books. On the bottom shelf are 3 fiction and 5 nonfiction books. Choosing which 2 books describes a pair of dependent events?

A.
one of the fiction books on the top shelf, and then one of the nonfiction books on the bottom shelf
B.
one of the fiction books on the top shelf, and then a second fiction book from the bottom shelf
C.
one of the nonfiction books on the bottom shelf, and a second nonfiction book from the bottom shelf
D.
one of the fiction books on the top shelf, and then one of the nonfiction books on the top shelf

m a t h w a y. c o m

step-by-step explanation:

v,jhvljh,b.b; hk; ljujb,vuvccklokll; k,m,km,

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places