Answer the following question

15/2

Step-by-step explanation:

Area of a triangle is calculated b*h/2. We know that triangle ADE is 1/4 the size of triangle ABC because AD = 1/4 AB so we can use that to help calculate the base and height of ADE. Base of ABC is 20 if we multiply that by 1/4 we get 5. Height of ACE is 12 if we multiply that by 1/4 we get 3. Plug those numbers into our area equation you get: 5*3/2 or 15/2 or 7.5

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

47 - 90 = 43

43 - 180 = x

x = 137