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SOVA2 [1]
3 years ago
14

Please help, will mark Brainliest.

Mathematics
1 answer:
matrenka [14]3 years ago
3 0
If f(x) = 0 then

solutions

x = 7 , x = -4

hope it helps
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PLEASE HELP HURRY<br><br> Thanks!!!!!!<br><br> This is math :)
PIT_PIT [208]

Answer:

DON'T PRES THAT LINK THAT IS A HACK AND VIRUS

Step-by-step explanation:

HOPE THIS LETS YOU REMEMBER  ABOUT NOT PRESSING THESE LINKS!

4 0
3 years ago
What if i=radical -1, what is the value of i^3
aleksklad [387]

\bf i^3\implies \sqrt{-1}\cdot \sqrt{-1}\cdot \sqrt{-1}\implies (\sqrt{-1})^2\sqrt{-1}\implies \sqrt{(-1)^2}\cdot \sqrt{-1} \\\\\\ -1\cdot i\implies \boxed{-i}

6 0
3 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
I need helpppp:
Sedaia [141]

Answer:

The second table.

Step-by-step explanation:

In the first table, the speed goes from 45 down to 43; then down to 41; then up to 42; then up to 43.  It decreases and then increases.  This is not the correct table.

In the second table, the speed goes from 45 up to 47; then up to 49; then down to 48; then down to 47.  It increases and then decreases; this is the correct table.

To verify, we check the last two tables.  The third table stays at 45, then decreases to 43 and 41.  This is not correct.

The last table decreases from 45 to 43, then decreases to 41, then stays constant.  This is not correct.

The second table is the only correct one.

6 0
3 years ago
Read 2 more answers
1. which statement completes the syllogism?
Alex777 [14]
A) all squares are polygons. I think
5 0
3 years ago
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