An irregular shape that can be split into familiar shapes such as rectangles, triangles, and circles is called a figure.

A Composite figure

Step-by-step explanation:

An irregular shape that can be split into familiar shapes such as rectangle, triangles and circles is called a Composite figure.

A Composite figure may easily split into the familiar shapes such as triangles, rectangles and circles in order to find the area of these shapes.

Thus, area of such figures can be easily found out by a composite figure.

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

i'll be glad to : )