What is the perimeter of this equilateral triangle?

due in 10 min!!! plz help

3x+48

Step-by-step explanation:3x+48=>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

3(x+16)

the perimeter is 60

Step-by-step explanation:

p = 3a

first, find what x is equal to

since equilateral triangles have equal sides

5x = 24 - x

+x          +x

6x = 24

6      6

x = 4

plug x = 4 into the equation

5x = 24-x

5(4) = 24 - (4)

20 = 20

P = 3a

P = 3(20)

P = 60

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

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.