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natka813 [3]
2 years ago
10

() Fill in the missing number​

Mathematics
2 answers:
Naddika [18.5K]2 years ago
7 0

The answer is x because x is the unknown i have defined for this unknown equation.

arlik [135]2 years ago
3 0

Answer:

1

Step-by-step explanation:

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PleSe help me due today i beg of u plzz
konstantin123 [22]

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5. D

6.D

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6 0
3 years ago
How to tell if a number is prime or composite
kobusy [5.1K]
A prime number<span> has only two factors: 1 and itself. A</span>composite number<span> has more than two factors. The</span>number<span> 1 is neither </span>prime<span> nor </span>composite<span>. The </span>prime numbers<span> between 2 and 31 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 and 31 since each of these </span>numbers<span> has only two factors, itself and 1.</span>
7 0
3 years ago
Read 2 more answers
Suppose that the length of a phone call in minutes is an exponential random variable with parameter λ = 1/ 8. If someone arrives
Elis [28]

Answer:

a) P=0.535

b) P=0.204

c) P=0.286

Step-by-step explanation:

The exponential distribution is expressed as

F(x>t)=e^{-\lambda t}

In this example, λ=1/8=0.125 min⁻¹.

a) The probability of having to wait more than 5 minutes

F(x>5)=e^{-0.125*5}=e^{-0.625}=0.535

b) The probability of having to wait between 10 and 20 minutes

F(1020)=e^{-0.125*10}-e^{-0.125*20}\\\\F(10

c) The exponential distribution is memory-less, so it is independent of past events.

If you have waited 5 minutes, the probability of waiting more than 15 minutes in total is the same as the probability of waiting 15-5=10 minutes.

F(x>15|t^*=5)=F(x>15)/F(x>5)=\frac{e^{-0.125*15}}{e^{-0.125*5}}=e^{-0.125*(15-5)}\\\\ F(x>15|t^*=5)=e^{-0.125*(10)}=F(x>10)=0.286

5 0
3 years ago
marissa wants to purchase song for hee ipod songs on itunes cost $1.25 each marisa found anothee webside called mp3 golore that
prisoha [69]
The equaton for cost is

first website is 1.25x
2nd is x+3

I'm assuming what number of songs wil make them have same cos
1.25x=x+3
minus x from both sides
0.25x=3
divide both sides by 0.25
x=12
answer is 12 songs must be purchased to spend the same on each website
8 0
3 years ago
A computer professor is interested in studying the amount of time it would take students enrolled in the Introduction to Compute
inysia [295]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

In this question, firstly we calculating the \bar{x} \ \ and \ \ s

\bar{x}=11.89 \\\\s = 2.52\\\\n = 9\\\\\alpha=0.05\\

H_0 : u \leq 10\\\\ H_1 : u > 10

It is an upper test  and testing the statistics:

t=\frac{\bar{x}-\mu }{\frac{s}{\sqrt{n}}}\\\\t=\frac{11.89-10 }{\frac{2.52}{\sqrt{9}}}\\\\t=2.25\\\\

So, the test statistics t=2.25

\alpha=0.05 \\\\ d.f = n-1\\\\

     =9-1\\\\=8

critical value =2.306 ( using t-table ) critical\ value  >\ test\ statistics , \  Fail\  to\  Reject\  H_0

Decision: We should not reject the null hypothesis.

6 0
3 years ago
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