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Laabri

IM: 7.5.3: Changing Elevation (Practice)

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Last updated over 1 year ago
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6.

One of the particles in an atom is called an electron. It has a charge of -1. Another particle in an atom is a proton. It has charge of +1. The charge of an atom is the sum of the charges of the electrons and the protons. A carbon atom has an overall charge of 0, because it has 6 electrons and 6 protons and -6 + 6 =0. Find the overall charge for the rest of the elements on the list.

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12.

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What is the final elevation if:

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1.

A bird starts at 20 m and changes 16 m?

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2.

A butterfly starts at 20 m and changes -16 m?

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3.

A diver starts at 5 m and changes -16 m?

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4.

A whale starts at -9 m and changes 11 m?

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5.

A fish starts at -9 meters and changes -11 meters?

Add:

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7.

14.7 + 28.9

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8.

-9.2 + 4.4

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9.

-81.4 + (-12)

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10.

51.8 + (-0.8)

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11.

Last week, the price, in dollars, of a gallon of gasoline was g. This week, the price of gasoline per gallon increased by 5%. Which expressions represent this week's price, in dollars, of a gallon of gasoline? Select all that apply.

Decide whether the table could represent a proportional relationship. If the relationship could be proportional, what would be the constant of proportionality?

Annie’s Attic is giving away $5 off coupons.

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13.

Decide whether the table could represent a proportional relationship. If the relationship could be proportional, what would be the constant of proportionality?

Bettie's Boutique is having a 20% off sale.