Help Please! No fake answers. This question has two parts. First, answer Part A. Then, answer Part B.
Part A
Fill in the blanks to complete the sentence.

Lin runs 5 laps around a track in 6 minutes.

How many minutes per lap is that?
minutes

If Lin runs 21 laps at the same rate, how long does it take her?
minutes

Part B
How many laps per minute is that? __ laps ​

< 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⭐

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

130 degrees. i have no other way to explain