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raketka [301]
3 years ago
6

Can someone please help me on this find the value of y

Mathematics
1 answer:
sesenic [268]3 years ago
6 0

Answer:

y=-8.5

Step-by-step explanation:

You need to start by combining like terms.

So you would add -0.3y to both sides. Next you will subtract 21.3 from both sides. You should now have 5.4y=-45.9. At this point you will divide both sides by 5.4 giving you your answer of -8.5

5.1y + 21.3 = -o.3y - 24.6

+o.3y +0.3y

5.4y + 21.3 = -24.6

-21.3 -21.3

5.4y = -45.9

÷5.4 ÷5.4

y = -8.5

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g(- 3) = - 27

Step-by-step explanation:

To evaluate g(- 3) substitute x = - 3 into g(x)

g(- 3) = - 2(- 3)² + 3(- 3) = - 2(9) - 9 = - 18 - 9 = - 27

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What is the value of x in the equation 2(x+3)=4(x-1)
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Gemiola [76]

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{ -2 if x ∈ -4 < x < -3

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[ 5 if x ∈ 2 ≤ x < 5    

Step-by-step explanation:

From the graph, we have;

{ -2 if x ∈ -4 < x < -3

For the next inequality line at y = -5, we have;

1) The inequality line, starts with an open circle on the left at x = -3, which is equivalent to less than or equal to symbol, ≤ as -3 ≤ x because the point x =-3 is the left boundary.  The inequality line extends to the point x = 2, where we have a closed circle (on the right), which is equivalent to a x ≤ 2 with the 2 on the right hand side because, the 2 is the right boundary of the inequality

2) The inequality can be summarized as starting from x = -3 extends to x = 2

3) As stated in point 1) the point x = 3, we have -3 ≤ x and at point x = 2, we have x ≤ 3 which can be combined as  -3 ≤ x < 2, to give;

{ -5 if x ∈ -3 ≤ x < 2

For the next inequality line at y = 5, we have;

1) The inequality line, starts with an open circle on the left at x = 2, which is equivalent to less than or equal to symbol, ≤ as 2 ≤ x because the point x =2 is the left boundary.  The inequality line extends to the right to reach point x = 5, where we have a closed circle (on the right), which is equivalent to a x ≤ 5 inequality, with the 5 on the right hand side because, the 5 is the right boundary of the inequality

2) The inequality can be summarized as starting from x = 2 extends to x = 5

3) As stated in point 1) the point x = 2, we have 2 ≤ x and at point x = 5, we have x ≤ 5 which can be combined as  2 ≤ x < 5, to give;

[ 5 if x ∈ 2 ≤ x < 5.

7 0
3 years ago
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