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3 years ago

13

Tirzah wants to put a fence around her garden. She has 22 yards Of fence material. Does she have enough to go all the way around

the garden? 4 8/12 6 9/12

1 answer:

CaHeK987 [17]3 years ago

3 0

No. She needs at least 31 yards of material.

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A diver went 37.9 feet below the surface of the ocean, and then 12.4 feet further down, he then rose 8.16 feet. Write and solve

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(37.9 + 12.4) + 8.16 i think, i could be wrong though.

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3 years ago

Jack usually mows his lawn in 6 hours. marilyn can mow the same yard in 4 hours. How much time would it take for them to mow the

Anuta_ua [19.1K]

Answer:

2.4 hours or 2 hours and 24 minutes

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Jack mows 1/6 of the lawn per hour while Marilyn mows 1/4 of the lawn together. Adding up those rates yields in their combined mowing rate:

$R = \frac{1}{6}+ \frac{1}{4}\\R=\frac{10}{24}$

The time required for them to mow the entire lawn is:

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3 years ago

Solve x^2 + 4x + 8 = 0

Mkey [24]

Answer:

x = -2 + 2 i or x = -2 - 2 i

Step-by-step explanation:

Solve for x:

x^2 + 4 x + 8 = 0

Subtract 8 from both sides:

x^2 + 4 x = -8

Add 4 to both sides:

x^2 + 4 x + 4 = -4

Write the left hand side as a square:

(x + 2)^2 = -4

Take the square root of both sides:

x + 2 = 2 i or x + 2 = -2 i

Subtract 2 from both sides:

x = -2 + 2 i or x + 2 = -2 i

Subtract 2 from both sides:

Answer: x = -2 + 2 i or x = -2 - 2 i

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3 years ago