A spinner is numbered from 1 through 10 with each number equally likely to occur. What is the probability of obtaining a number less than 2 or greater than 6 in a single spin?

2

1/2

2/5

3/5

1/2

Step-by-step explanation:

Each number is equally likely to occur. Thus, you have to find what numbers would fit the necessary criteria.

There is only 1 number less than 2 (1), and 4 numbers that are greater than 6 (7,8,9,10)

You can get 5 numbers out of 10.

5/10 = 1/2

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