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Alla [95]
3 years ago
9

Simplify 14 + 13 − (12 + 11). A) 0 B) 1 C) 4 D) 10

Mathematics
2 answers:
yulyashka [42]3 years ago
7 0
The answer is C) 4
Explanation: Use order of operations (PEMDAS)
Add what’s in the parenthesis (12+11) = 23
Then add 14+13=27
27 — 23 = 4
never [62]3 years ago
4 0
C. 4
14 + 13 - (23)
27 - 23
4
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Since there's three more games, they've had 13 so far.

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3 years ago
6= 24-6a what is a.......................
AnnyKZ [126]

Answer:

3

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Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard.
Sliva [168]

Answer:

Y=2.50x+3

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3 years ago
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Find the sum of the series given in sigma notation.
Kryger [21]

Answer:

Option b is correct 175

Step-by-step explanation:

n = 7

k = 6

3k -2 ------1

put k = 6 in above eq. for finding first term

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put k = 7 in above eq. for finding first term

 a2 = 3(7) - 2 = 21 - 2 = 19

 a3 = 3 (8) - 2 = 24 - 2 = 22

16, 19 , 22, ...  //Arithmetic series formation

a1 = 16 , a2 = 19

d = a2 - a1 = 19 - 16 = 3 //Difference of first two terms

Using sum forumula for arithmetic series

sum = \frac{n}{2}(2a1 + (n-1)d)

      = \frac{7}{2}(2a1 + (7-1)d)

      = \frac{7}{2}(2(16) + (6)3)

      =  \frac{7}{2}(32 + 18)    

      =  \frac{7}{2}(50)

      = 7 * 25

      = 175




4 0
3 years ago
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