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barxatty [35]
3 years ago
12

Hannah does an experiment. She has two colorless chemicals that she mixes together in a beaker. Which of the following indicates

that a chemical change occurs when she mixes the two chemicals together?
I. The chemicals change color from colorless to purple.
II. A yellow gas forms.
III. A brown solid forms in the bottom of the beaker.
IV. The temperature of the chemicals rises 15°C.
A.
II and III only
B.
I and III only
C.
I, II, III, and IV
D.
I, II, and III only
Mathematics
1 answer:
dexar [7]3 years ago
3 0

The correct answer is CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC!!!!!!!!!!!!!!

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Vol. of the composite figure is 189 m³

Step-by-step explanation:

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Finally, subtract the "notch" volume from the 216 m³ volume found earlier:

216 m³ - 27 m³ = 189 m³

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\text{The domain}\\\\D=[0,\ 14]

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In the image below, ABC ~ DEF What is the length of EF and the measure of D
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Similarly, if triangle ABC is congruent to triangle DEF, then angle D = angle A = 49 degrees

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So in short, the answer is choice B) 27; 49

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