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Alexxx [7]
3 years ago
9

Helppp please I don’t get it

Mathematics
1 answer:
timofeeve [1]3 years ago
8 0

obviously 12 boys

and 18 girls

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12-5x-4kx=y solve for x
Lana71 [14]
Hi there!

12 - 5x - 4kx = y

-4kx - 5x = y - 12 

Factor out variable x 

x(-4k-5)=y-12

x = (y+12)/(4k+5)
3 0
3 years ago
Please help :(<br> [math]
sergij07 [2.7K]

Hey!

------------------------------------------------

First Equation:

2x + 3 = -7

2x + 3 - 3 = -7 - 3 (Subtract 7 to both sides)

2x = -10

2x/2 = -10/2 (Divide 2 to both sides)

x = -5

------------------------------------------------

Second Equation:

4.5x - 7 = 20

4.5x + (-7) + 7 = 20 + 7 (Add 7 to both sides)

4.5x = 27

4.5x/4.5 = 27/4.5 (Divide 4.5 to both sides)

x = 6

------------------------------------------------

Third Equation:

-3x + 7 = 28

-3x + 7 - 7 = 28 - 7 (Subtract 7 to both sides)

-3x/-3 = 21/-3 (Divide -3 to both sides)

x = -7

------------------------------------------------

Answers:

2x + 3 = -7 → x = -5

4.5x - 7 = 20 → x = 6

-3x + 7 = 28 → x = -7

------------------------------------------------

Hope This Helped! Good Luck!

8 0
3 years ago
I think of a number subtract three then multiply by four
Artyom0805 [142]

Answer:

4

Step-by-step explanation:

4 0
3 years ago
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It is well-defined collection of distinct objects<br> A.class B.elements C.Group D.Set
Elena L [17]
Answer

hope correct

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4 0
3 years ago
Eighteen subtracted from a number is<br> 35."
ivolga24 [154]

Answer:

53

Step-by-step explanation:

35 plus 18

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3 years ago
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