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slavikrds [6]
1 year ago
6

Benjamin bought tokens at a funfair.he used 3out if 8 of them at the ring toss booth and 2out of5 of the remaining tokens at the

darts booth he then bought another 35 and had 10 tokens more then what he had at first how many tokens did he have at first
Mathematics
1 answer:
Daniel [21]1 year ago
3 0

Let's assume he bought "x" tokens initially.

He spent 3 over 8 of them at ring toss game booth. So he used (3x/8) tokens there.

His remaining tokens after first game = x - (3x/8) = (5x/8) tokens.

He then spent 2 over 5 of them at darts game booth. So he spent (2/5)(5x/8) = (x/4) tokens there.

His left over tokens after second game = (5x/8) - (x/4) = (3x/8) tokens.

Now he bought another 35 tokens, his new balance = 35 + (3x/8)  tokens.

His new balance is ten more than his initially bought tokens.

So 35 + (3x/8) - x = 10

35 + (3x-8x)/8 = 10

35 + (-5x/8) = 10

(5x/8) = 35 - 10

(5x/8) = 25

5x = 25*8 = 200

x = 200/5 = 40

Hence, he bought initially 40 tokens.

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<span>y – 2 x – 4 = 0     --> a = -2, b = 1, c = -4</span>

 

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Using the distance formula at points (x, y):

distance = | -2 * -4 + 1 * 11 + -4 | / sqrt [(- 2)^2 + (1)^2]

distance = 15 / sqrt (5)

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1 year ago
Zoe and Hannah share tips in the ratio 3:7. Last week, Zoe received £24. How much did Hannah receive last week?
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Answer:

hannah gets £56

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3   : 7

24 : ?

24/3 = 8

8 x 7 = 56

£56

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What is the value of s in the equation 4(2s − 1) = 7s + 12?
scZoUnD [109]
The answer would be letter B
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How much could you save for retirement if you chose to invest the oney you spend on Starbucks coffee in one year? Assume you buy
solmaris [256]

Answer:

The answer should be $7,087.50

Step-by-step explanation:

4.50 x 50 = 225

225 x 1.05 = 236.25

236.25 x 30 = 7087.50

7 0
1 year ago
According to a Pew Research survey, about 27% of American adults are pessimistic about the future of marriage and the family. Th
IgorLugansk [536]

Answer:

P(X≤5)=0.5357

Step-by-step explanation:

Using the binomial model, the probability that x adults from the sample, are pessimistic about the future is calculated as:

P(x)=\frac{n!}{x!(n-x)!} *p^{x}*(1-p)^{n-x}

Where n is the size of the sample and p is the probability that an adult is pessimistic about the future of marriage and family. So, replacing n by 20 and p by 0.27, we get:

P(x)=\frac{20!}{x!(20-x)!}*0.27^{x}*(1-0.27)^{20-x}

Now, 25% of 20 people is equal to 5 people, so the probability that, in a sample of 20 American adults, 25% or fewer of the people are pessimistic about the future of marriage and family is equal to calculated the probability that in the sample of 20 adults, 5 people of fewer are pessimistic about the future of marriage and family.

Then, that probability is calculated as:

P(X≤5)= P(1) + P(2) + P(3) + P(4) + P(5)

Where:

P(0)=\frac{20!}{0!(20-0)!}*0.27^{0}*(1-0.27)^{20-0}=0.0018

P(1)=\frac{20!}{1!(20-1)!}*0.27^{1}*(1-0.27)^{20-1}=0.0137

P(2)=\frac{20!}{2!(20-2)!}*0.27^{2}*(1-0.27)^{20-2}=0.0480\\P(3)=\frac{20!}{3!(20-3)!}*0.27^{3}*(1-0.27)^{20-3}=0.1065\\P(4)=\frac{20!}{4!(20-4)!}*0.27^{4}*(1-0.27)^{20-4}=0.1675\\P(5)=\frac{20!}{5!(20-5)!}*0.27^{5}*(1-0.27)^{20-5}=0.1982

Finally, P(X≤5) is equal to:

P(X≤5) = 0.0018+0.0137 + 0.0480 + 0.1065 + 0.1675 + 0.1982

P(X≤5) = 0.5357

3 0
1 year ago
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