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Eva8 [605]
3 years ago
11

Which expression is equivalent to 9a + 12? (1 point)

Mathematics
2 answers:
Allushta [10]3 years ago
5 0

First 1!

3(3a + 4)

3(3a + (3)4)

= 9a + 12

harkovskaia [24]3 years ago
3 0
The first one is.

3 x 3A is oA
3 x 4 is +12
9a +12
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The points (-1,2) and (4,y) have a slope of -4/5. what is the y-coordinate of the point (4,y)
Nastasia [14]

Answer:

y = - 2

Step-by-step explanation:

Calculate the slope m using the slope formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 1,2) and (x₂, y₂ ) = (4, y)

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5(y - 2) = - 20 ( divide both sides by 5 )

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3 years ago
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Step-by-step explanation:

3 0
2 years ago
How to solve y in -(y+9)=10
Allisa [31]

Answer:


Step-by-step explanation:

- (y+9) = 10


Multiply through by -1 gives us


y+9 = -10


Subtract 9 from both sides


y = -19


That's your answer.


If you work it through it satisfies the equation.


That is:


- (-19 +9) = 10


-(-10) = 10


10 = 10


Boo ya!

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