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Yuri [45]
2 years ago
11

An = n2- 5

Mathematics
1 answer:
JulijaS [17]2 years ago
6 0

Answer:

D

Step-by-step explanation:

if to substitute values of n=1;2;3;4;5 into

a_n=n^2-5

then a₁=-4; a₂=-1; a₃=4; a₄=11; a₅=20.

It means the answer {-4, -1, 4, 11, 20,...} is correct.

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The National Association of Realtors estimates that 23% of all homes purchased in 2004 were consideredinvestment properties. If
hichkok12 [17]

Answer:

0.9099

Step-by-step explanation:

1) =

=

200

800

= .25

2) Identify = . = .23

3) Find the z-value.

=

−

(1−)

=

.25−.23

.23(1−.23)

800

= 1.34

4) The probability is 0.9099.

7 0
2 years ago
What is the longest flagpole ( in whole feet) that could be shipped in a box that measures 2ft by 2 ft by 12 ft
creativ13 [48]
I believe the answer is 12 feet because 12 feet is the longest dimension
3 0
2 years ago
Which are the solutions of x2 = –7x – 8?
Anit [1.1K]

Answer

x= -7, -1

Step-by-step explanation:

x^2= -7x- 8

x^2+ 7x+ 8 =0

x+7=0       x+1=0

x=-7          x=-1

3 0
2 years ago
Read 2 more answers
3. Bob Baffert hos iwo thoroughbred horses in his bom that he brings out
natima [27]

Answer:

12.5r + 200 = 12.5*2r

Step-by-step explanation:

<h3>Given</h3>

Rate of Hoppertunity = r

Rate of Dortmund = 2r as it is twice as fast

<h3>Solution</h3>

Let the distance Hoppertunity runs be d, then the distance Dortmund runs is d + 200 m

Since it took 12.5 seconds Dortmund to catch Hoppertunity, it can be expressed as:

  • d = 12.5r for Hoppertunity
  • d + 200 =12.5*2r for Dortmund

<u>By replacing d in the second equation, we get:</u>

  • 12.5r + 200 = 12.5*2r

<u>Soving</u>:

  • 12.5r = 200
  • r = 200/12.5
  • r = 16 m/sec

Hoppertunity's rate is 16 m/sec

Dortmund's rate is 32 m/sec

3 0
3 years ago
P(n) models the price (in dollars) of a pack of n bulbs at a certain store.
ycow [4]

Answer:

Option A.

Step-by-step explanation:

The given question is incomplete. Here is the complete question.

P(n) models the price (in dollars) of a pack of n bulbs at a certain store.

When does the price of a pack increase faster ?

n             4             10            12

P(n)        12            25           28

When does the price of a pack increase faster ?

A. Between 4 and 10 bulbs

B. Between 10 and 12 bulbs

C. The price increases at the same rat over both the intervals.

To solve this question we will find the rate of increase in the prices per pack in the given intervals.

From n = 4 to n = 10

Rate of increase in price = \frac{25-12}{10-4}

                                         = \frac{13}{6}

                                         = 2.166 ≈ $2.17 per pack

From n = 10 to n = 12

Rate of increase in price = \frac{28-25}{12-10}

                                         = \frac{3}{2}

                                         = $1.5 per pack

Therefore, price per pack increases faster between n = 4 and n = 10 as compared to n = 10 to n = 12.

Option A is the answer.

8 0
3 years ago
Read 2 more answers
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