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AlekseyPX
3 years ago
7

What are the missing numbers?

Mathematics
1 answer:
n200080 [17]3 years ago
8 0
2^2. 2 and 2. Because 2 and 2
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When f(x) = –3, what is x?<br><br> –29<br> –10<br> –3<br> –1
mariarad [96]

Answer:

x = - 1

Step-by-step explanation:

I hope this will help you

6 0
2 years ago
An instructor who taught two sections of Math 161A, the first with 20 students and the second with 30 students, gave a midterm e
uranmaximum [27]

Answer:

<em>The answers are for option (a) 0.2070  (b)0.3798  (c) 0.3938 </em>

Step-by-step explanation:

<em>Given:</em>

<em>Here Section 1 students = 20 </em>

<em> Section 2 students = 30 </em>

<em> Here there are 15 graded exam papers. </em>

<em> (a )Here Pr(10 are from second section) = ²⁰C₅ * ³⁰C₁₀/⁵⁰C₁₅= 0.2070 </em>

<em> (b) Here if x is the number of students copies of section 2 out of 15 exam papers. </em>

<em>  here the distribution is hyper-geometric one, where N = 50, K = 30 ; n = 15 </em>

<em>Then, </em>

<em> Pr( x ≥ 10 ; 15; 30 ; 50) = 0.3798 </em>

<em> (c) Here we have to find that at least 10 are from the same section that means if x ≥ 10 (at least 10 from section B) or x ≤ 5 (at least 10 from section 1) </em>

<em> so, </em>

<em> Pr(at least 10 of these are from the same section) = Pr(x ≤ 5 or x ≥ 10 ; 15 ; 30 ; 50) = Pr(x ≤ 5 ; 15 ; 30 ; 50) + Pr(x ≥ 10 ; 15 ; 30 ; 50) = 0.0140 + 0.3798 = 0.3938 </em>

<em> Note : Here the given distribution is Hyper-geometric distribution </em>

<em> where f(x) = kCₓ)(N-K)C(n-x)/ NCK in that way all these above values can be calculated.</em>

7 0
3 years ago
Please help meeeeee​
klasskru [66]

Answer:

Step-by-step explanation:

Y= 5/2x+5. :D

8 0
2 years ago
Read 2 more answers
Can someone tell me some word problems already solved? dividing and multiplying decimals and integers by 100,10 and 1000. I need
const2013 [10]

Answer:

wait im a little confused sorry but im going to try my best

Step-by-step explanation:

50x2=100. 5×2=10. 500x2=1,000

1,000÷10=100. 100÷10=10. 10,000÷10=1,000

5 0
3 years ago
Whats the answer to 8.54 to the nearest tenth
stiks02 [169]
Heres a trick i learned look at the digit your rounding  look to your right is it 5 or higher? yeas add 1 more to the one you are rounding  if not then you drop the  numbers after the one you are rounding so 8.54 is now just 8.5
5 0
3 years ago
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