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Sever21 [200]
3 years ago
10

Tim earned $300 in five days. After the first day, he earned $10 more each day than the day before. How much did Tim earn on the

first day?
Mathematics
2 answers:
Vika [28.1K]3 years ago
8 0
Use the equation 300⇒5x to find how much tim made each day on average. 
x⇒60   so, Day 1: $60, Day 2: $70 etc.. so the equation 300=5x+10 suffices the problem. 300⇒5x+10 ⇒    290=5x
x=58
So, Tim earned $58 his first day. Hope this helped.
S_A_V [24]3 years ago
6 0
The given problem is based on arithmetic sequence
Sn = 300 (the sum of money in five days)
d = 10 (the difference day by day)
n = 5
The question asks how much Tim earn on the first day, we write it as a₁

The general formula to find the sum of a sequence is
n/2 (2a₁ + d(n-1)) = Sn

Input the numbers to the formula to find the value of a₁
n/2 (2a₁ + d(n-1)) = Sn
5/2 (2a₁ + 10(5-1)) = 300
5/2 (2a₁ + 10(4)) = 300
5/2 (2a₁ + 40) = 300
2a₁ + 40 = 300 × 2/5
2a₁ + 40 = 120
2a₁ = 120 - 40
2a₁ = 80
  a₁ = 80/2
  a₁ = 40

The first day, Tim earned $40
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uysha [10]

Answer:

<u></u>

  • <u>1. As a fraction: 9/50</u>
  • <u>2. As a proportion: x/1 = 9/50</u>
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<u></u>

Explanation:

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Depart from the definition of probability: probability is the number of favoragle outcomes divided by the total number of possible outcomes:

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A proportion is the equality of two ratios. In this case you must set the ratio of people who say they watched it on Netflx, x, per every people who saw a movie this week, 1, equal to the ration 9 /50.

Hence, the proportion that shows the probability is:

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Where x is the probability.

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You just have to multiply the probability by 100:

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Answer:

a) In 5 weeks he would have $50

b)w | m

    1 : $10

2: $20

3:$30

Step-by-step explanation:

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