The mean score (rounded to 2 DP) in the Math's test for class B is 86.86.
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Class A has 15 pupils and class B has 29 pupils. The mean score for class A is 55. Hence:
Mean score of A = (sum of all scores) / 15
55 = (sum of all scores) / 15
sum of all scores in A = 825
The mean score for both classes is 76. Hence:
[(sum of all scores in A) + (sum of all scores in B)]/(total number of pupils) = mean score of both classes
[825 + (sum of all scores in B)]/(15 + 29) = 76
sum of all scores in B = 2519
Mean score of B = (2519) / 29 = 86.86
The mean score (rounded to 2 DP) in the Math's test for class B is 86.86.
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Answer:
114 ft
Step-by-step explanation:
We split the figure into two rectangles. The long triangles perimeter is equal to 30 + 30 + 9 + 9 = 78. Then, the top triangle is equal to 9 + 9 + 9 + 9, which is equal to 36. Then to find the perimeter of the entire figure, we add these two shapes together, 78 + 36, which gets us to our final answer, 114 ft.
Answer:
C. 43.11°
Step-by-step explanation:
The formula to use in finding m<BCD = ½ the difference of the intercepted arcs AE and BD
Thus:
m<BCD = ½(AE - BD)
m<BCD = ½(112.54 - 26.32)
m<BCD = ½(86.22)
m<BCD = 43.11°
Answer:
Both the angles are equal and opposite angles and are of 52°
Step-by-step explanation:
The two angles are equal and opposite angles.
So,
(3x-14)°=[4(x-9)]°
Putting the value of 'x', the angles are:
°
°
Both the angles are equal and opposite angles and are of 52°
