Worth 14 points. Please help :(

60

Step-by-step explanation:

If angle 1 is 120 that means angle 5 is 120 too. Two angles together must equal 180 degrees.

60 degrees

Explanation:

1 : 2 as 5 : 6

∠1 + ∠6 = 180°

∠1 = 120°

∠6 = ?

180° - 120° = 60°

∠6 = 60°

i think its a and d

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