Please help me solve this question:
−(−D)=

Answer

D = 0

Step-by-step explanation:

-(-D) will need to be distri by -1 so a negotive times a neg is a positive so -D turns to positive D. And positive D is on the zero.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

i believe the answer is the polygon, heptagon.