Points (5,2), (1,0) and (a,5) lie on the same straight line. Then the value of a is a) 15 b) 13 c)11 d)9​

C

Step-by-step explanation:

Since the points lie on the same line then the slope between consecutive points will be the same.

Calculate the slope m using the slope formula

m =

with (x₁, y₁ ) = (5, 2) and (x₂, y₂ ) = (1, 0)

m = = =

Calculate the slope again and equate to

with (x₁, y₁ ) = (1, 0) and (x₂, y₂ ) = (a, 5)

m = = , so

= ( cross- multiply )

a - 1 = 10 ( add 1 to both sides )

a = 11

no one knows lol

step-by-step explanation:

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24