Help appreciated and please explain

the answer is 1/4

Step-by-step explanation:

so technically this is not that of a easy math question and to show you how it is because the answer is already in the question its saying that the CDE triangle is 1/4 of the ABC triangle so 1/4 and a decimal is 1 divided by 4 = .25 and .25 as a percent is 25% since the total height of the ABC tri is 36 you do 25 percent of 36 and if you know yo time tables you would see that 4x9=36 so 1/4 or 25% of 26 is 9 so thats the height of Tri. CDE and that concludes that since there are 4 of 25 in 100 then the situation 1/4 would mean the ABC triangle has 4 parts and Tri CDE is only 1 out of the 4/whole part.

answer: ok

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.