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Natasha2012 [34]
3 years ago
7

Help me pleaseeeeeeeeeeeeeeeeeeeee

Mathematics
1 answer:
marissa [1.9K]3 years ago
3 0

Answer:

A. 75

Step-by-step explanation:

to get the average mark multiply the result by it's associated weight

93 × 10% = 9.3

82 × 30% = 24.6

72 × 40% = 28.8

60 × 20% = 12

then add these numbers to get his average 74.7 which is closest to 75

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If a₁ = 4 and an = 5an-1 then find the value of a5.
igor_vitrenko [27]

The value of a_{5} is 2500, when a_{1}=4 and 5a_{n-1}.

Given that, a_{1}=4 and 5a_{n-1}.

We need to find the value of a_{5}.

<h3>What is an arithmetic sequence?</h3>

An arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.

Now, to find the value of a_{5} :

a_{2} =5a_{2-1}=5a_{1}=5 \times4=20

a_{3} =5a_{3-1}=5a_{2}=5 \times20=100

a_{4} =5a_{4-1}=5a_{3}=5 \times100=500

a_{5} =5a_{5-1}=5a_{4}=5 \times500=2500

Therefore, the value of a_{5} is 2500.

To learn more about arithmetic sequence visit:

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2 years ago
In rectangle ABCD, find x and y.
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Substitute 3x +21 into 6y in the second equation.



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1 year ago
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231²²¹⁰⁰⁵/₂₂₁₈₄₁ = h² + 36
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195²²¹⁰⁰⁵/₂₂₁₈₄₁ = h²
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How can complex fractions be used to solve involving ratios
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Bring them to the same denominator and solve for x
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