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Marianna [84]
3 years ago
14

Pls help me i need it pls

Mathematics
2 answers:
Blababa [14]3 years ago
5 0

Answer:

1)12

2)23

3)22

4)30

5)19

6)31

yarga [219]3 years ago
4 0

Answer:

1) 12

2) 23

3) 95 with a reminder of 1

4) 30

5) 50 with a reminder of 4

6) 31

Step-by-step explanation:

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19) n? – 8n – 27 = 6<br> solve each equation by completing the square
Fynjy0 [20]

Answer:

n=11 or n=-3

Step-by-step explanation:

Consider the quadratic equation n^2-8n-27=6.

First, remind the formula

(a-b)^2=a^2-2ab+b^2

To complete the square, note that

8n=2\cdot n\cdot 4

Hence, we need +4^2

Add 16 to both sides of equation:

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6 0
3 years ago
Solve the system by substitution.
hram777 [196]

Answer:

1st, keep value of x in 1st equation

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-6(-2y-1)+2y=48

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y=3

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Therefore, x= - 7

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