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kolbaska11 [484]
3 years ago
8

on the first day of the year, you have $700 in your bank account. you spend $35 per week. your friend starts the year with $450

in his bank account. he saves $15 per week. solve the equation 700 – 35w = 450 15w to find out how many weeks, w, it will take for you and your friend have the same amount of money in your accounts.
Mathematics
2 answers:
____ [38]3 years ago
7 0
5weeks
<span>Good! Since you want to find when both of you have the same amount of money, you can set the two expressions representing the money equal to each other. This gives the equation $700 – $35 per week • weeks = $450 + $15 per week • weeks. Solving the equation, you find that you will have the same amount of money in 5 weeks.</span>
MrRa [10]3 years ago
3 0
700 - 35w = 450 + 15wLet's flip this equation450 + 15w = 700 - 35wNow, add both sides by 35w450 + 50w = 700Subtract both sides by 45050w = 250Divide both sides by 50w = 5
Thus, it will take 5 weeks for you an your friend to have the same amount of money.
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Answer:

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Step-by-step explanation:

Expected value:

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Probability:

Number of desired outcomes divided by the number of total outcomes.

In this question, the order in which the numbers are chosen is not important. So we use the combinations formula to solve.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Probability of winning:

Desired outcomes:

The 6 correct numbers, so D = 6

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6 numbers from a set of 21. So

T = C_{21,6} = \frac{21!}{6!15!} = 54264

Probability:

p = \frac{1}{54265}

Expected value

\frac{1}{54265} probability of earning 40,000.

\frac{54264}{54265} probability of losing 1. So

E = \frac{40,000}{54265} - \frac{54264}{54265} = -0.26

The expected value of this game is -$0.26.

7 0
3 years ago
How man 1/3 cups make 3/4 cups
Sati [7]

Answer:

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Step-by-step explanation:

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2 years ago
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ahrayia [7]

Given :

Mo spends £15 on ingredients to make 40 cookies.

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So, total profit is, P = £( 30.26 - 15 ) = £15.26 .

Hence, this is the required solution.

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Answer:

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Step-by-step explanation:

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Answer:

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