Directions: Place a < or > in the circle to complete the statement. 13. -9 O O4 14. -130-20 15. 24 O-17 16.-15 (> -40 17.|-610-7 18. 18 O 1-221 19. 1-15 O 1-14 (20.1-111-21 Directions. Find each sum​

i dont have an answer

step-by-step explanation:

1. perpendicular

2. parallel

3. perpendicular

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