What are the values of m∠abc, m∠cbf, m∠abd and m∠dbe in the given figure?

m∠abc -

m∠cbf –

m∠dbe –

m∠abd -

25 points : )

Work Shown:

ABD = 90 degrees due to the square angle marker

ABC = 72 degrees as this is a vertical angle to the 72 degree angle given.

Any pair of vertical angles are congruent.

Angles ABC, ABD and DBE form a straight angle.

This means they add to 180 degrees.

(angleABC)+(angleABD)+(angleDBE) = 180

(72)+(90)+(angleDBE) = 180

162+angleDBE = 180

angleDBE = 180-162

angleDBE = 18

We can also find this angle by noting that angles DBE and EBF add to 90.

So, (angleDBE)+(angleEBF) = 90 leads to angleDBE = 90-72 = 18

Angles ABC and CBF form a straight angle as well

(angleABC) + (angleCBF) = 180

72 + angleCBF = 180

angleCBF = 180-72

angleCBF = 108

i got 10.28 but that rounds up to 10.3

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,