A dish is filled with nickels and dimes, 33 coins in all. If the value of the coins is $2.65, how many dimes are there? A.20

B.13

C.18

D.16

stop using this to cheat on home work

step-by-step explanation:

dfbvfvdf

i just took the test, the correct answer is .. 31.5 in.

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

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .