Out of 290 racers who started the marathon, 272 completed the race, 15 gave up, and 3 were disqualified. What percentage did not complete the marathon?

6% of the racers did not ocmplete the marathon

Step-by-step explanation:

290 racers

272 completed the race

15 + 3 = 18 did not complete the race

= 0.94 = 94%

= 0.06 = 6%

they go with it happens or they mite give a chance?

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