Hii pls pls help me I will give

X=15.5 °

Step-by-step explanation:

AOB is an isosceles triangle since AO=BO (radius of the circle), to angle OAB=OBA= (180-53)/2= 63.5 °

Angle CAB=63.5+11=74.5 °

And the angle ACB=53/2= 26.5° (inscribed angle)

so in the triangle ABC: the angle ABC= 180- angle CBA + angle ACB =180-(74.5+26.5 )= 79 °

so x= angle ABC - angle OBA = 79 - 63.5 = 15.5 °

whats the

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