Done.
Here is the 6 that I left ==> 6
Answer:
0.72 ; 0.799 ; 0.8 ; 0.9
Step-by-step explanation:
4/5 = 0.8
9/10 = 0.9
Ascending order:
0.72 ; 0.799 ; 0.8 ; 0.9
First compare the tenth places. If tenth places are same, compare hundredth places
Ratio and proportion
real:shadow
so the person is 1.8m but the shadow is 4m
so
real:shadow=1.8:4
so
1.8:4=?:14
1.8/4=?/14
times both sides by 14
25.2/4=?
6.3=?
the tree is 6.3 m tall
Answer: 
Step-by-step explanation:
Given
Sample of 12 measurements has a mean of 16.5 and
a sample of 15 measurements has a mean of 18.6
Take
be the mean and no of measurements
and
be the mean and no of measurements in second case

Similarly,

Mean of 27 measurements

Answer:
75 inches
Step-by-step explanation:
with this we use change of subject
V=1/3
Pie=3.14
radius =3
height =8
so therefore
V=1/3 ×3.14×3×3×8
V=75.36