The length of a high school soccer field is a 100 yds long. Chris runs 18 yds forward, and 3 yds back each interval. How many intervals will it take Chris to reach the end of the soccer field

7 cycle

Step-by-step explanation:

So each cycle cycle he runs 18yd forward and 3rd backwards

This means each cycle he runs 15 yd forward

100/15 = 6.67

It will take at least 7 cycle to fully reach 100 yd

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.