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svlad2 [7]
3 years ago
6

Given the arithmetic sequence an = 3 + 2(n − 1), what is the domain for n?

Mathematics
2 answers:
hichkok12 [17]3 years ago
8 0
a_n=3+2(n-1)\\\\n\in\mathbb{N^+}\\\\Answer:\ D.\text{All integers where}\ n\geq1
lozanna [386]3 years ago
6 0
All numbers greater or equal to 1
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If the player moves the knight from (5, 1) to (6, 3), the translation made is
Anna35 [415]
X increases by one

y increases by 2

(5, 1) - > (x + 1, y + 2) -> (6, 3)
8 0
3 years ago
Help!!!!!! Find x and y so the quadrilateral is a parallelogram.
iren [92.7K]

Answer:

Conclusion:

  • The value of x = 7
  • The value of y = 4

Step-by-step explanation:

Given

  • The parallelogram PQRS

We know that the diagonals of a parallelogram bisect each other.

Therefore,

  • RT = TP

Given RT = x and TP = 5x-28, so

x = 5x-28

5x = x+28

5x-x = 28

4x = 28

divide boh sides by 4

4x/4 = 28/4

x = 7

Thus, the value of x = 7

Similarly,

QT = TS

Given QT = 5y and TS = 2y+12, so

5y = 2y+12

5y-2y = 12

3y = 12

divide both sides by 3

3y/3 = 12/3

y = 4

Thus, the value of y = 4

Conclusion:

  • The value of x = 7
  • The value of y = 4
3 0
2 years ago
Erica can paint her room 5 hours .If she had her friend Rachel help her , they can paint the room together in 3 hours .How long
LUCKY_DIMON [66]

Answer:

7 hours 30min

Step-by-step explanation:

Step one :

Given data

We are told that Erica can paint 1 room in 5hours

Her work rate is 1/5 room per hour

And also with the assistance of her friend they can paint 1 room in 3 hours

Hence their combined work rate is 1/3 room per hour

Step two

The combined work expression is

1/A+1/B=1/T

Where A=Erica's work rate

B=Rachael's work rate

T=combined work

1/5+1/B=1/3

1/B=1/3-1/5

1/B=5-3/15

1/B=2/15

B=15/2

B=7.5 hours

It will take Rachel 7 hours 30min to paint the room

4 0
3 years ago
The sequence is recursive. find the value of the next term in the sequence. 8, 10, 12, 14, . . .
Mars2501 [29]
It's an arithmetic progression with first term = 8 and common difference d =2:
so the next term is 14 + 2 = 16
8 0
3 years ago
Find the common difference in the arithmetic sequence, an, in which a3=11 and a12=74.<br><br>​
lana66690 [7]

Answer:

d=7

Step-by-step explanation:

3 0
3 years ago
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