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o-na [289]
3 years ago
9

(-1,2) rotated 180 degrees about the origin

Mathematics
1 answer:
Katen [24]3 years ago
8 0
If it is counter clockwise then the answer is (1,-2)
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How many moles of H2 would be required to produce 9.0 grams of water? 10<br> 2 H2 + O2 + 2 H20
alekssr [168]

Answer:

8.1 moles

Step-by-step explanation:

Given parameters: Mass of water to be decomposed = 29.2g Unknown: Number of moles of oxygen. Solution: To solve this problem, we first write the balanced reaction equation :                 2H₂O    →     2H₂    +    O₂ Now convert the given mass of the water to number of moles;   Number of moles of water =      Molar mass of water = 2(1) + 16 = 18g/mol   Number of moles of water =   = 16.2moles     From the balanced reaction equation:     2 moles of water produced 1 mole of oxygen gas;     16.2 mole of water will produce     = 8.1moles of oxygen gas

Hope this helps you :3

6 0
3 years ago
For the girl to lift this rock, she must push down with a force _____.
suter [353]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Use the discriminant to determine the number and type of solutions the equation has.
White raven [17]
x^2 + 8x + 12 = 0\\ \\a=1 , b= 8, c= 12 \\ \\ \Delta =b^2-4ac = 8^2 -4\cdot1\cdot12= 64-48= 16\\ \\\Delta > 0 \\ \\ Answer : \ C. \ \ two \ rational \ solutions


5 0
2 years ago
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What is the common denominator of 3/4 and 7/9
Veseljchak [2.6K]
The least common denominator is 36
5 0
2 years ago
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belka [17]

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Step-by-step explanation:

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2 years ago
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