Which of the following statements correctly describe how the geologic time scale is divided?
///Check all that are true.///

The geologic time scale is made up of days, months, and years.

Each era on the geologic time scale lasts for a different amount of time.

Each era on the geologic time scale lasts for the same amount of time.

The geologic time scale is divided based on major events in Earth’s history.

Yes th

Step-by-step explanation:

ey are true don't worry

the correct option is b

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