Equations with square and cube roots

y² = 64

• ±8

• 8

• ±32

• 32

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CCSS.8.EE.A.2

130 = n²

• n ≅ ± 11.4

• n ≅ 11.4

• n = ± 65

• n = 65

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CCSS.8.EE.A.2

2d² = 162

• d = 9

• d ≅ ± 9

• d = ± 9

• d = ± 12.7

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CCSS.8.EE.A.2

x² = 16

• 4

• 8

• ±8

• ±4

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CCSS.8.EE.A.2

4r³ = 32

• ±2

• -2

• 2

• 4

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CCSS.8.EE.A.2

m³ = 512

• 8

• ± 8

• 7

• ± 9

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CCSS.8.EE.A.2

The formula for A = 3.14 r² can be used to determine the area of a circle, where A is the area and r is the distance from the center of the circle to the outside edge. If the area of a circular garden is 700 square feet, about how far is the distance from the center of the garden to the outside edge? Round to the nearest tenth.

• 14.9 feet

• ± 14.9 feet

• 26.5 feet

• ±26.5 feet

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CCSS.8.EE.A.2

4y² = 5.76

• ± 1.2

• 1.2

• 2.4

• ± 2.4

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CCSS.8.EE.A.2

a³ = 216

• 6

• ± 6

• 108

• -6

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CCSS.8.EE.A.2

p³=1000

• 100

• 10

• -10

• ±100

Tags

CCSS.8.EE.A.2