All categories

3 years ago

Determine the zeros of f(x) when n=2. Please help I attached the image

Mathematics

2 answers:

melomori [17]3 years ago

7 0

Answer:

x=0 and -2

Notice a n=8, g(n)=0 and f(x) = 0. If n<8, the coefficients for f(x) become negative and when n>8, the coefficients becomes positive. It won't affect x=0 because x can be factor out and be equal to zero but will affect the second zero

Step-by-step explanation:

Given: g(n) = 1/2*n - 4 and f(x)= g(n)x^2 + 2(g(n))x; n≠8

n = 2

g(n) = 1/2*n - 4

g(n) = 1/2*2 - 4 = 1-4 = -3

f(x)= g(n)x^2 + 2(g(n))x

f(x)= -3x^2 + 2(-3)x = -3x^2 - 6x

0= -3x^2 - 6x; factor out -3x

0 = -3x(x + 2)

-3x = 0; x=0

(x+2)= 0; x=-2

Notice a n=8, g(n)=0 and n<8, the coefficients for f(x) become negative and when n>8, the coefficients becomes positive

zavuch27 [327]3 years ago

3 0

Answer:

398.634

Step-by-step

(3x40)200x2b

You might be interested in

each sail on the windmill is 5 meters in length How much area do the sails cover as they turn from the force of the wind

melomori [17]

When the windmill turns, its sails will form a circle of 5m radius.

So area = pi*radius^2

= 3.14*5^2

= 3.14*25

= 78.5 sq.m

3 0

3 years ago

Most graduate business schools require applicants to take the gmat. scores on this test are approximately normally distributed w

Harman [31]

We are looking for the probability :
$P(X > n)=0.05$
Transform the law to standard normal like this:
$P(\dfrac{X-545}{100}> \dfrac{n-545}{100})=0.05$
The above formula is equivalent to this one:
$P(\dfrac{X-545}{100}< \dfrac{n-545}{100})=0.95$
From normal law table, we read the value of $\dfrac{X-545}{100}$ .
$\dfrac{X-545}{100}=1.7$
Solving the above equation for the score n:
$X-545=170$
$X=715$ , it is the score we are looking for.

5 0

3 years ago

Tim throws darts at a dartboard that has numbers 1 through 20 and a bull's-eye in the middle. Tim throws a dart 40 times, and he

Naddik [55]

Answer:

he has a 4/5 chance to hit bulls-eyes.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Find the compound interest and final amount $950 for 2 years at 7½ per annum

wlad13 [49]

Answer:

1092.50 account value

142.50 interest

Step-by-step explanation:

to solve compound interest questions we use the formula A=P(1+rt) where P is the principal (initial investment) r is the rate or the return (7.5%) and t is the interval or time so 2 years

now putting it together we get A=950(1+ (7.5x2)) = 1092.50 $

the interest is this value A minus the initial investmetn so 1092.50 - 950 = 142.50$

6 0

3 years ago

Make sure the answer is correct!!

saul85 [17]

1) 5

2) square root 26

3) 3 pie

4) 2 square root 5

7 0

4 years ago