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3 years ago

PLEASE HELP PLEASE!!

Mathematics

1 answer:

Mamont248 [21]3 years ago

8 0

9514 1404 393

Answer:

negative infinity

Step-by-step explanation:

The numerator approaches -7 as x approaches 0 from either direction.

The denominator approaches 0 from above, as x approaches 0 from either direction.

Hence, the rational expression approaches -∞ as x approaches 0 from either direction.

The limit is -∞.

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A square playground is surrounded by a sidewalk on all sides. The sidewalk is 2n+3 yards along each side. The sidewalk is 0.5 ya

soldi70 [24.7K]

Answer: It can be calculated by using the formula of perimeter and by adding four sides

1) Perimeter= 2(L+B)= 8n+12

2) Perimeter= L+L+L+L= 4L= 8n+12

Step-by-step explanation:

As it is a square playground all its sides are equal

Perimeter of the sidewalk = 2(L+B)= 2(2n+3+0.5)= 2(2n+3.5)= 4n+7

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4 0

4 years ago

PLZ I need help!!!!!

shusha [124]

Answer:

The Answers are

$\csc (-45) =-\sqrt{2} \\\\\sec (-45) = \sqrt{2}\\\\\cot (-45) = -1$

Step-by-step explanation:

Let we Know some Identities

cosec (-θ) = - cosec (θ)

sec (-θ) = sec (θ)

cot (-θ) = - cot (θ)

Also,

$\csc (45) =\sqrt{2} \\\\\sec (45) = \sqrt{2}\\\\\cot (45) = 1$

Therefore,

$\csc (-45) =-\csc (45)=-\sqrt{2} \\\\\sec (-45) =\sec (45) =\sqrt{2}\\\\\cot (-45) =-\cot (45)= -1$

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