Problem A builder makes staircases where each step is 28 cm 28cm28, start text, c, m, end text long and rises 18 cm 18cm18, start text, c, m, end text so people don't trip. Every staircase has a stringer — a diagonal support connecting all of the steps. 28 cm 28cm 18 cm 18cm stringer stringer A certain staircase will have 6 66 steps. ℓ ℓ What is the length ℓ ℓell of the stringer for this staircase? Round your answer to the nearest tenth of a centimeter.

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

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

answer: what are the following choices