The first one is C. 68. The second one is B. 7. The third one is x = 21. The fourth one is CD = 10
8 millimeters. There are 10 millimeters in a centimeter. 0.8*10=8.
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Answer:

Step-by-step explanation:
Given expression
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Often with regrouping of 2 numbers then counting them once all together
Answer:
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Step-by-step explanation:
Antarctic blue whale
More information:The Antarctic blue whale (Balaenoptera musculus ssp. Intermedia) is the biggest animal on the planet, weighing up to 400,000 pounds (approximately 33 elephants) and reaching up to 98 feet in length.