After completing the closing entries for Revenues and Expenses, the Income Summary account has a credit balance of $1,500. The journal entry to close out the $1,500 credit balance of Income Summary would be:

Explanation:

The journal entry to close the credit balance of the income summary account is as follows:

Income summary Dr $1,500

             To Retained earning $1,500

(Being the difference is credited to retained earning)      

Since the income summary has a credit balance which reflects the net income so we debited the income summary account and credited the retained earning account so that the proper posting could be done

bd = 9 cm

step-by-step explanation:

in a 30°-60°-90° triangle, the ratio of side lengths is 1 : √3 : 2. that is, the longest side (hypotenuse) is twice the length of the shortest side.

all of the triangles in your geometry are 30°-60°-90° triangles. ac is the hypotenuse of δacd, and the short side of δabc.

the short side ad of δacd will be half the length of ac, so 3 cm. the hypotenuse ab of δabc will be twice the length of ac, so 12 cm. segment bd is the difference of the lengths ab and ad, so is

bd = ab -ad

bd = 12 cm - 3 cm = 9 cm

comment on side length ratios

you can figure the ratios of side lengths in a 30°-60°-90° triangle by considering the trig ratios of the angles. or you can figure the length of the altitude of an equilateral triangle of side length 2 using the pythagorean theorem.