All categories

2 years ago

Completely factored form of n^2-25

Mathematics

2 answers:

Olegator [25]2 years ago

6 0

Answer:

(n+5) (n-5)

Step-by-step explanation:

I hope this helps

Airida [17]2 years ago

6 0

(N+5) (n-5)..........

You might be interested in

I need help please it’s due today I forgot how to do this :(

choli [55]

Answer:

Samantha payed 12.71$ for her purchase.

Step-by-step explanation:

I may have misunderstood the question, but it looks like you can use a calculator for this!

6.19 + 2.85 + 2.29 + 1.38 =

12.71

8 0

3 years ago

For which pairs of functions is (f•g)(x)=x

tatuchka [14]

B on edg I took the quiz

6 0

2 years ago

A motorbike travels 165 km in 3 hours. How long will it take to travel 440 km?

Andre45 [30]

Answer:

165km ----> 3 hrs

1km --------> (3/165) hrs

440km --------> [(3/165)*440]hr

Answer: 8 hrs

4 0

2 years ago

Read 2 more answers

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

accuracy of the test = 94.5% (A)

Nothing 33.3% (B)

6 0

2 years ago

A jar contains 30 marbles. It has 10 red, 6 black and 14 green marbles. Two marbles are drawn, the first is not returned before

Basile [38]

<u>Answer:</u>

The correct answer option is P (both green) = 91 / 435

<u>Step-by-step explanation:</u>

We are given that in a jar containing 30 marbles, 10 are red, 6 are black and 14 are green.

Two marbles are drawn and the second one is drawn without returning the first marble and we are to find the probability of getting green marbles both time.

P (both green) = $\frac { 1 4 } { 3 0 } \times \frac { 1 3 } { 2 9 }$ = 91 / 435

6 0

3 years ago