Answer:
Step-by-step explanation:
Given
Mean = 4.68
Standard Deviation (SD) = 2.83
Value, x = 9.38
Required
Determine the z score
z score is calculated using the following formula;
Substitute 9.38 for x; 2.83 for SD and 4.68 for Mean
(Approximated)
<em>Hence, the z score is 1.66</em>
25 x 3
=(20x3) + (5x3)
=60 + 15
=75
Answer:
it is D
Step-by-step explanation:
Answer:
The greatest number of groups he could have made is 4 groups
Each of the four groups will have:
4 Squares each
7 circles each
Step-by-step explanation:
16 squares
28 circles
Find the highest common factor of 16 and 28
16: 1, 2, 4, 8, 16
28: 1, 2, 3, 4, 7, 14, 28
The highest common factor of 16 and 28 is 4
This means the greatest number of groups he could have made is 4 groups
Each of the four groups will have:
16 squares = 16 / 4
= 4 Squares each
28 circles = 28 / 4
= 7 circles each
Each of the four groups will have:
4 Squares each
7 circles each
X = 22o
30 + 20 + 3x + 20 + 2x = 180
=> x = 110/5 = 22
