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3 years ago

-6n+5=59 can someone plz tell me what this is

Mathematics

2 answers:

posledela3 years ago

8 0

Answer:

-6n + 5 = 59

-6n = 54

n = -9

Bumek [7]3 years ago

8 0

Answer: n = -9

Step-by-step explanation: you subtract the 5 from both sides leaving the equation to -6n=54. then you divide both sides by -6 leaving it with n = -9

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A screening test wished to improve the diagnostic ability to identify Zika-infected fetuses in pregnancy rather than after birth

12345 [234]

Answer:

Sensitivity = 66.7% (C)

specificity= 98.0% (E)

positive predictive value = 80.0% (F)

Negative predictive value = 96.0% (D)

accuracy of the test = 94.5% (A)

Step-by-step explanation:

Given the data in the question;

Disease Present Disease Absent Total

Test Positive 24 6 30

Test Negative 12 288 300

Total 36 294 330

so A = 24, B = 6, C = 12 and D = 288

sensitivity = [A/(A+C)]×100 = [24/(24+12)]×100 = [24/36]×100

Sensitivity = 66.7% (C)

specificity= [D/(D+B)]×100 = [288/(288+6)]×100 = [288/294]×100

specificity= 98.0% (E)

positive predictive value = [A/(A+B)]×100 = [24/(24+6)]×100

= [24/30]×100

positive predictive value = 80.0% (F)

Negative predictive value = [D/(D+C)]×100 = [288/(288+12)]×100

= [288/300]×100

Negative predictive value = 96.0% (D)

accuracy of the test = [A+D/(A+B+C+D)]×100 = [24+288/(24+6+12+288)]×100

= [312/330]×100

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6 0

3 years ago

20, 17,16, 17, 18, 16, 18, 19<br><br>what is the mode of the data set?

pychu [463]

Answer:

16,17 and 18

Step-by-step explanation:

In statistics mode of a set of entries is the entry which is repeated maximum. There can be more than one mode in a set of entries. These are called mode,

Bimode ( two mode ) , trimode ( three mode ) and Multimode ( four or more ) .

Hence here our set of entries is,

20,17,16,17,18,16,18,19

arranging them in ascending order

16,16,17,17,18,18,19,20

hence in this case we see that 16,17and 18 all are getting repeated for two times, the maximum.

Hence we have a trimode here

16,17,18

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3 years ago

Calculus, Limits and Continuity<br><br> Can someone please answer/explain this question? Thank you.

lana [24]

9514 1404 393

Answer:

(A) -4 and -2

Step-by-step explanation:

The constant in the function tells you f(0) = 5.

You know that the positive leading coefficient means the value of f(x) will be negative for x-values smaller than some number. The offered answer choices indicate the value x = -4 is a lower bound on the value of c. So, -4 < c < 0, for sure.

To further refine the interval, you would need to know f(-2) and/or f(-1).

f(-2) = (-2)³ -2(-2) +5 = -8 +4 +5 = 1

Then -4 < c < -2.

_____

I find a graphing calculator to be very helpful locating zeros of polynomials.

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