Pedro and ivan races each other in a 24-mile bike race. after 20min, pedro had traveled 5 miles. ivan had spent the 20 minutes traveling at a rate of 16mph. which person was in 1st place after 20min?

answer:

ivan will

step-by-step explanation:

16mph

16/3=5.333

60/3=20minutes

so instead of 5 miles in 20 minutes like pedro ivan did 5.333 repeating

answer:

z^2 + (-1 + 5·i)·z + 14 - 7·i = 0

(1 + 2·i)^2 + (-1 + 5·i)·(1 + 2·i) + 14 - 7·i = 0

(1 + 4·i - 4) + (-1 - 2·i + 5·i - 10) + 14 - 7·i = 0

0 = 0 --> true

z^2 + (-1 + 5·i)·z + 14 - 7·i = 0

(1 - 2·i)^2 + (-1 + 5·i)·(1 - 2·i) + 14 - 7·i = 0

(1 - 4·i - 4) + (-1 + 2·i + 5·i + 10) + 14 - 7·i = 0

20 - 4·i = 0 --> false

answer:

29) 5√6+3√5

30) -75√6+45√10

step-by-step explanation

29) √15(√10+√3)=

√150+√45=

5√6+3√5

30) -3√15(5√10-5√6)=

-15√150+15√90=

-75√6+45√10