Evangeline and Riley were making their way to class yesterday, starting from the main doors of the school. This door is 30 m from the main stairs. They began walking at a steady pace, arriving at the stairwell in 2 minutes. When they got there, Evangeline realized that she forgot her math book in the hallway when she stopped at the sanitizer, which is 10 m from the door. They quickly went back to pick it up, arriving in 30 seconds and taking an additional 30 seconds to get the book. They return to the stairwell at a steady speed, arriving in one minute. The run up the stairs takes 30 terrifying seconds. They continued running to get to class, covering 30 m in one minute. Create a distance time graph to show their journey.

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

“ a line segment that has the endpoints on the circle and passes through the midpoint is called the diameter. the diameter is twice the size of the radius. a line segment that has its endpoints on the circular border but does not pass through the midpoint is called a chord. a circle is the same as 360 small circle up the number 0 . i hope this .

if i'm not wrong, i would say that the third angle has (72) because the three sides of all triangles have 180 degrees and if we subtract 180 - 62 - 40 = (72) / but i'm not sure about 40 yd.