Can someone help me with this PLEASE!

12 in and 36 in

Step-by-step explanation:

(A)

Using Pythagoras' identity in the right triangle

b² + 9² = 15²

b² + 81 = 225 ( subtract 81 from both sides )

b² = 144 ( take the square root of both sides )

b = = 12 in

(B)

The perimeter is the sum of the 3 sides, thus

perimeter = 15 + 9 + 12 = 36 in

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation:

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)