Answer: -6 +/- = x
<u>Step-by-step explanation:</u>
y = x² + 12x - 5
<u> +5 </u> <u> +5 </u>
y + 5 = x² + 12x
<u> + 36 </u> <u> +36 </u> <em>added (12 ÷ 2)² to both sides</em>
y + 41 = (x + 6)²
To find the zeros, let y = 0:
0 + 41 = (x + 6)²
= x + 6
<u>-6 </u> <u> -6 </u>
-6 +/- = x
Answer:
Required probability is 0.9748
Step-by-step explanation:
given data
mean = 117.7-cm
standard deviation = 2.2-cm
sample size n = 29
solution
we consider here random variable which represents here length of rod= x
so get here first z that is express as
put here value with x value 118.5-cm
Z = 1.9582
p value is 0.9748
so required probability is 0.9748