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zhuklara [117]
3 years ago
5

What is the value of a?

Mathematics
1 answer:
inessss [21]3 years ago
5 0
6(a+2)+3=3(10-3a)\\
6a+12+3=30-9a\\
15a=15\\
a=1
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Help me please and thank you!
lorasvet [3.4K]

Answer:

-4/3

Step-by-step explanation:

-2 - 1 is -3

6-2 is 4

6 0
3 years ago
Write an algebraic expression that represents 9 less than 19 times a number
Nostrana [21]
The expression would be 19x-9. The reason is because if you think about it, it says that there is 9 less than 19x (x would be the unknown number) I hope this helps! ^-^
8 0
3 years ago
Write a comparison sentence that represents the equation.<br><br> 5 x 9=45
GuDViN [60]

Answer:

Step-by-step explanation:

5 x 9 = 45

9 x 5 = 45

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6 0
3 years ago
30.
aleksley [76]

Answer:

The smallest possible perimeter of the triangle, rounded to the nearest tenth is 72.4 in

Step-by-step explanation:

The Triangle Inequality Theorem states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

Let

x ------> the length of  the remaining side

Applying the triangle inequality theorem

1) x+x > 30

2x > 30

x > 15 in

The perimeter is equal to

P=30+2x

<em>Verify each case</em>

1) For P=41.0 in

substitute in the formula of perimeter and solve for x

41.0=30+2x

2x=41.0-30

x=5.5 in

Is not a solution because the value of x must be greater than 15 inches

2) For P=51.2 in

substitute in the formula of perimeter and solve for x

51.2=30+2x

2x=51.2-30

x=10.6 in

Is not a solution because the value of x must be greater than 15 inches

3) For P=72.4 in

substitute in the formula of perimeter and solve for x

72.4=30+2x

2x=72.4-30

x=21.2 in

Could be a solution because the value of x is greater than 15 inches

4) For P=81.2 in

substitute in the formula of perimeter and solve for x

81.2=30+2x

2x=81.2-30

x=25.6 in

Could be a solution because the value of x is greater than 15 inches

therefore

The smallest possible perimeter of the triangle, rounded to the nearest tenth is 72.4 in

5 0
3 years ago
Read 2 more answers
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Tomtit [17]
Can you send a picture of the graph? there's no way to know the answer if we can't see the graph
8 0
3 years ago
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