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RSB [31]
3 years ago
13

What is the expression for the sum of the first n odd numbers starting 1+3+5+.....

Mathematics
2 answers:
Reptile [31]3 years ago
7 0

Answer:

2n-1

Step-by-step explanation:

labwork [276]3 years ago
6 0

Answer:

(2n-1)

Step-by-step explanation:

The expression will be (2n-1) where n is the index of the odd number you wanna find

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???? please help lol
kow [346]

Answer:

  1. 150π ft²
  2. 10π ft.

Step-by-step explanation:

Area of the sector :

Area (sector) = \pi r^{2} \times \frac{\theta}{360^{o}}

Finding the area given r = 30 ft. and θ = 60° :

⇒ Area = π × (30)² × 60/360

⇒ Area = π × 900/6

⇒ Area = 150π ft²

===========================================================

Length of the arc :

Length (arc) =2 \pi r} \times \frac{\theta}{360^{o}}

Finding the arc length given r = 30 ft. and θ = 60° :

⇒ Arc Length = 2 × π × 30 × 60/360

⇒ Arc Length = 60/6 × π

⇒ Arc Length = 10π ft.

7 0
2 years ago
Read 2 more answers
Merchandise is ordered on November 10; the merchandise is shipped by the seller and the invoice is prepared, dated, and mailed b
natali 33 [55]

Answer:

November 13

Step-by-step explanation:

Following dates are given

On November 10 = Merchandise ordered

Date of an invoice prepared, dated and mailed = November 13

Date when the merchandised received by the buyer = November 18

So, the credit period begins when the invoice is prepared, dated and the mailed by the seller to the buyer as it is the evidence of that the merchandise is ordered            

4 0
3 years ago
3(x + 1) - (x-3) = 12<br> I need help I don’t I understand
balandron [24]

Answer:

3

Step-by-step explanation:

3x+3-x+3=12

3x-x=12-3-3

2x=6

x=6/2

x=3

4 0
3 years ago
Read 2 more answers
What is the supplement of a 95° angle
ivanzaharov [21]
Supplement is 180- angle
180-95 = 85
5 0
3 years ago
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Which statement is always true?
Goshia [24]
I’m pretty sure A is true <3
6 0
2 years ago
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