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My name is Ann [436]
2 years ago
5

I’m very stuck and someone give the answer

Mathematics
1 answer:
svlad2 [7]2 years ago
7 0

Answer:

since there are 30 students as a whole and 20 boys make up part of the class, you can assume that there are 10 girls in the class. since the mean mark for boys is 62 I think the mean mark for girls would be 8%

Step-by-step explanation:

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30

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4 0
3 years ago
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Study the geometric sequence {-4, -84, -1764, -37044, ...}.
Nonamiya [84]

Answer:

              \bold{a_n=(-4)21^{n-1}}

Step-by-step explanation:

a_1=-4\,,\ a_2=-84\,,\ a_3=-1764\,,\ a_4=-37044\quad\implies\ \ r=21

{-84:(-4)=21 and -1764:(-84)=21 and -37044:(-1764)=21}

geometric sequence formula:   a_n=a_1r^{n-1}

a_1=-4\quad and \ \ r=21

a_n=(-4)21^{n-1}

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3 years ago
Which of the following statements is true for the quadratic equation x2 – 16x + 64 = 0?
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Please provide the statements.

Step-by-step explanation:

6 0
2 years ago
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Three years ago the average price of a movie ticket was $8.75 and now it is $11.00. What was the annual multiplier and the perce
Andrei [34K]
Given:
Price of tickets:
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1.079 * 100% = 107.9%

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The percentage increase is 7.9%


8 0
3 years ago
Which point(s) are solutions to the inequality -x - 2y > 3? Select all that apply.
wariber [46]
C if u need a step-by-step just comment
3 0
2 years ago
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