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exis [7]
3 years ago
10

M ∪ N = ____. {3, 4, 6, 7, 9} {3, 4, 5, 6, 8, 9} {2, 4, 6, 8}

Mathematics
1 answer:
Bezzdna [24]3 years ago
4 0
{3, 4, 6, 7, 9}????????????/



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Sequences:
joja [24]

Answer:

<u>The sequence is</u>

  • 1, 1 + 2, 1 + 2 + 3, 1  + 2 + 3 + 4, ...

Each term is the sum of the consecutive numbers from 1 to that number.

<u>The nth term is the sum of the first n numbers:</u>

  • aₙ = 1 + 2 + 3 + ... + n
  • aₙ = 1/2n(1 + n) (formula for sum of the n terms of arithmetic progression with the first term of 1 and common difference of 1)
  • aₙ = n(n + 1)/2

1) The number of circles in the nth pile is n(n + 1)/2

2) When n tends to infinity the number of circles tends to infinity

4 0
3 years ago
elaine opened a saving account with a deposit of 1000. The interest on her account is compounded each year at a rate of 2%. Elai
vivado [14]

Answer:

$1,061

Step-by-step explanation:

2% of 1000 is 20.

If 2% is compounded yearly, then

year one- $1,020

year two- $1,040.40

year three- $1,061.21

Rounded to the nearest whole dollar, Elaine would have $1,061 in her savings account after three years.

5 0
3 years ago
Read 2 more answers
In Crestview Middle School, 12 out of 16 students are right handed. If there are 400 students in the school, how many are right
DerKrebs [107]

Answer:

the answer is 300

Step-by-step explanation

there are 16 people so we divide that by the total number of students

400 divided by 16 = 25

since there are 12 right handed in each group we multpily it by 12

25 x 12 = 300

and theres your answer!

7 0
3 years ago
What is 1 + 1<br><br> Please give a detailed answer and I’ll crown
Ksivusya [100]

Answer:

1+1+2

1/10x10=1

1/10x10=1

(1/10x10)+(1/10x10)+2

or...

0.5x2=1

0.5x2=1

(0.5x2)+(0.5x2)=2

hope this helps lol

6 0
2 years ago
Read 2 more answers
The net of a square pyramid is shown in the diagram.
LenaWriter [7]

Answer:

the general formula for the total surface area of a regular pyramid isbT. S. A. =12pl+B where p represents the perimeter of the base

3 0
3 years ago
Read 2 more answers
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