1 answer:
Answer:
The answer is below
Step-by-step explanation:
a) The number of pupils who scored more than 7 in a test = pupils who shored 8 + pupils who shored 9 + pupils who shored 10
The number of pupils who scored more than 7 in a test = 7 + 3 + 1 = 11 pupils
b) Total number of pupils = pupils who shored 0 + pupils who shored 1 + pupils who shored 2 + . . . + pupils who shored 9 + pupils who shored 10
Total number of pupils = 0 + 1 + 4 + 0 + 0 + 8 + 0 + 2 + 7 + 3 + 1 = 26 pupils
c) It is assumed that nobody scored either 0 or 3 or 4 or 6. Also the highest mark was assumed to be 10
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Answer:
m= 102.4
Step-by-step explanation:
Step 1: Multiply both sides by 4.
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(m/4)*(4)=(25.6)*(4)
m= 102.4
Answer:
x = -3, y = 2
Step-by-step explanation:
x - y = -5
x = -5 + y
Let's put this into the other equation
(-5 + y) + y = -1
-5 + 2y = -1
2y = 4
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Now we can solve for x by plugging y into either equation
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Answer:
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Step-by-step explanation:
x = -2 or x = 6
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Step-by-step explanation:
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