125.7 - ( - 1.82 )
125.7 + 1.82
127.52
Answer:
27.8%
Step-by-step explanation:
0.722 = 72.2%
The % reduction is:
(100-72.2)% = 27.8%
Hope this helps
Answer:
X = -3. non-extraneous
Step-by-step explanation:
The given equation is 
We cross multiply to get:
Expand and multiply.
We factor to obtain:
Checking for extraneous solutions
Substitute x=-3 
.....Non-extraneous
Checking for x=6
....Non-extraneous
Step-by-step explanation:
This event that's taking place is happening twice. The event is the mail getting delivered. It's happening two times. Luckily, you already know the probability of it happening once. Because it happens twice, you just square it. (0.9)^2. 0.81 chance of it happening in two consecutive days.
Answer:
The number of times the variability in the heights of the sixth graders is the variability in the heights of the seventh graders is approximately 1.4
Step-by-step explanation:
From the question, the mean absolute deviation (MAD) of the sixth graders = 1.2 and that of the seventh graders = 1.7
The variability in the heights of the sixth graders = 1.2
The variability in the heights of the seventh graders = 1.7
To calculate how many times the variability in the heights of the sixth graders is the variability in the heights of the seventh graders, we will divide the variability of the seventh graders by the variability of the sixth graders
That is, 1.7/ 1.2 = 1.4167 ≅ 1.4
Hence, the number of times the variability in the heights of the sixth graders is the variability in the heights of the seventh graders is approximately 1.4
