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suter [353]
3 years ago
12

3x - 9 + 4x Please Help

Mathematics
2 answers:
Wewaii [24]3 years ago
7 0

Answer:

Add like terms 7x - 9

Step-by-step explanation:

Sveta_85 [38]3 years ago
7 0
Add the 4 and 3 then you will get

7x-9
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What is the area of this polygon?
ra1l [238]
Step 1) Draw a line from point F to point S. A rectangle forms (rectangle FSCW)

Step 2) Find the area of this rectangle. The area is 18 square units because it is 2 units high and 9 units across (9*2 = 18). You can count out the spaces or you can note how we go from x = -4 to x = 5 so subtracting the values gives -4-5 = -9 which has an absolute value of 9. 

Step 3) Find the area of triangle FSN. The base is 9 units and the height is 6 units (count out the spaces or subtract y values). So the area is A = b*h/2 = 9*6/2 = 54/2 = 27

Step 4) Add up the area of the rectangle to the area of the triangle: 18+27 = 45

Final Answer: 45 square units

note: another way to find the answer is to find the area of rectangle WABC where point A is at (-4,4) and point B is at (5,4). Then subtract off the triangular areas of AFN and BNS
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Say you have the diameter of 17.
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3 years ago
Let a = x2 + 4Rewrite the following equation in terms of a and set it equal to zero (x2+4)2+32=12x2+48
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Answer:

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Step-by-step explanation:

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