This isosceles triangle has two sides of equal length, that are longer than the length of the base, b. the perimeter of the triangle is 15.7 centimeters. the equation 2a + b 15.7 models this information if one of the longer sides is 6.3 centimeters, which is used to find the length of the base?

Assuming you're asking what b is:

Substitute and Subtract

i am thinking c. sorry if im wrong .

step-by-step explanation:

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option