Answer: 138.6 in sq
Step-by-step explanation:
the area of a similar polygon will be the scale factor ^ 2 times the original area
This means that the area of G'H'I' is 3^2 * 15.4 = 9 * 15.4 = 138.6
a title. Hope this helped could I possibly get brainliest?
Answer: 1
Step-by-step explanation:
Answer: 3 1/4 tons = 6500 tons
Step-by-step explanation:
3 tons is 6000 since 3 * 2000 = 6000
1/4 would be 25% of 2000 which would be 500
because if you take 500 four times it will be 2000
Answer:
Step-by-step explanation:
13.71
Step-by-step explanation:
Given the data as : 13 , 17, 9, 21
Finding the mean of the data;
sum of data set =13+17+9+21=60
Number of data set ,n,= 4
Mean= sum/n =60/4 =15
Finding the deviation from the mean
13-4=9
17-4=13
9-4=5
21-4=17
Squaring the deviations from mean
9²=81
13²=169
5²=25
17²=289
Adding the squares of deviations from the mean
81+169+25+289 =564
Finding n-1
4-1=3
Finding variance
564/3 =188
Finding the standard deviation
√188 = 13.71