Iwill give anyone who answers correctly the brainliest answer the ratio of the length to the width of a rectangle is 4: 3. if the rectangle has diagonal of length d, then the area may be expressed as kd^2 for some constant k. what is k?

12/25

Step-by-step explanation:

d =  √4² +  3²

  = √16 + 9

  = √25

  = 5

length = 4

width = 3

d = 5

length x width = kd²

4 x 3 = k(5)²

12 = 25k

12/25 = k

12/25

Step-by-step explanation:

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i