Please help!! i don’t understand how to find mBOC

m∠BOC = 60°

Step-by-step explanation:

m∠AOB and m∠BOC have to add up to m∠AOC.

Step 1: Define

m∠AOB = 7x + 30

m∠BOC = 9x + 42

m∠AOC = 104

Step 2: Set up

7x + 30 + 9x + 42 = 104

Step 3: Solve for x

Combine like terms: 16x + 72 = 104

Subtract 72 on both sides: 16x = 32

Divide both sides by 16: x = 2

Step 4: Find m∠BOC

m∠BOC = 9(2) + 42

m∠BOC = 18 + 42

m∠BOC = 60°

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

6(h+1)/2=a

a=area

step-by-step explanation:

its the same thing as a square or rectangle but after multiplying two sides you need to divide it by two.