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irakobra [83]
3 years ago
9

What is 57 divided by 20

Mathematics
2 answers:
lozanna [386]3 years ago
6 0

Answer:

2.85

Step-by-step explanation:

navik [9.2K]3 years ago
4 0

Answer: 2.85

Step-by-step explanation:

57/20 = 2.85

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WARRIOR [948]

Answer:

2 (4x - 1) + 6 = 8x + 4 = 4(2x+1)

Step-by-step explanation:

2 (4x - 1) + 6

= (2*4x + 2*-1) + 6

= 8x - 2 + 6

= 8x + 4

= 4/(2x+1)

8 0
2 years ago
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3 years ago
He first three terms of a geometric sequence are as follows. 10 , 30 , 90 find the next two terms of this sequence.+
ankoles [38]
10*3=30
30*3=90
90*3=270
270*3=810

or

10*3^1=30
10*3^2=90
10*3^3=270
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4 0
3 years ago
Alvin's age is two times Elga's age. The sum of their ages is 63. What is Elga's age?
lawyer [7]

Answer: Alvin = 42 yrs , Elga = 21 yrs

Step-by-step explanation:

Let Elga's age be x , and Alvin's age be y ,since Alvin is two times Elga's age , then

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y = 2x ............... equation 1

The sum of their ages is 63 implies

x + y = 63 .............. equation 2

Solving the resulting linear equations by substitution method.

Substitute equation 1 into equation 2 , we have

x + 2x = 63

3x = 63

x = 63/3

x = 21

Therefore : Elga is 21 years old , then Alvin will be 21 x 2, which will be 42

8 0
3 years ago
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