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irina [24]
4 years ago
12

For his phone service, Justin pays a monthly fee of $24, and he pays an additional $0.06 per minute of use. The least he has bee

n charged in a month is $113.28.
What are the possible numbers of minutes he has used his phone in a month?
Use m for the number of minutes, and solve your inequality for m.
Mathematics
1 answer:
garri49 [273]4 years ago
6 0

M= 1488

This is how many number of minutes Justin has used his phone in a month.

I solved this by first subtracting 24 from 113.28, which is 89.28.

Next I knew multiplication would have to be involved.

I had to figure out 0.06 times what equals 89.28.

Well that would be 1488.

Please Vote my answer brainliest. thanks!

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3 years ago
25% of all who enters a race do not complete. 30 haveentered.
nikklg [1K]

Answer:

The probability that exactly 5 are unable to complete the  race is 0.1047

Step-by-step explanation:

We are given that 25% of all who enters a race do not complete.

30 have entered.

what is the probability that exactly 5 are unable to complete the  race?

So, We will use binomial

Formula : P(X=r) =^nC_r p^r q^{n-r}

p is the probability of success i.e. 25% = 0.25

q is the probability of failure =  1- p  = 1-0.25 = 0.75

We are supposed to find the probability that exactly 5 are unable to complete the  race

n = 30

r = 5

P(X=5) =^{30}C_5 (0.25)^5 (0.75)^{30-5}

P(X=5) =\frac{30!}{5!(30-5)!} \times(0.25)^5 (0.75)^{30-5}

P(X=5) =0.1047

Hence the probability that exactly 5 are unable to complete the  race is 0.1047

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4 years ago
X^6+3x^3-5 <br> write the expression in quadratic form
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Step-by-step explanation:

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x =  \sqrt[3]{1.1926}  = 1.0605 \\ x =  \sqrt[3]{ - 4.1926}  =  - 1.6125

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Step-by-step explanation:

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ella [17]

Answer:

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Step-by-step explanation:

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