The length of a rectangle is 2cm, and the width is 1 cm. Find the length of a diagonal of this rectangle.

A. √3cm

B. √5cm

C. 3 cm

D. 25 cm

Ans 2

Step by step explanation :

2 X 1 = 2

this is merely the Pythagorean Theorem. so we would do (2^2+1^2)^.5 = 2.236 = square root of 5 = answer B!!!

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b