One diagonal of a kite is twice as long as the other diagonal. if the area of the kite is 400 square meters, what are the lengths of the diagonals?

20m and 40m

Step-by-step explanation:

The area (A) of a kite is calculated using the formula

A = product of diagonals

Let one diagonal be d then the other diagonal is 2d ( twice as long )

Hence

× 2d × d = 400

d² = 400 ← take the square root of both sides

d = = 20

and 2d = 2 × 20 = 40

The diagonals are 20m and 40m in length

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

89

step-by-step explanation: