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Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?
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What is the value of the expression below? 148+(-6)| + |– 35= 7|
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45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?
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Which of the following circles have their centers on the x-axis? check all that apply.
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