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2 years ago

13

Pamela has4/5 pound of sunflower seeds if she gives 2/3 pound of sunflower seeds to the squirrels in her backyard what fraction

of a pound of sunflower seeds will she have left

1 answer:

Assoli18 [71]2 years ago

8 0

4/5-2/3= 12/15-10/15 (common denominator is 15)=2/15 pounds of seeds left

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Answer:

Step-by-step explanation:

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2 years ago

Write the number 55 in another way.

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2 years ago

1 Solve 8x - 9 = 15 for x.

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2 years ago

Half angle tan 5pi/8

Bond [772]

The half-angle formula for tangent is:

tan(a/2) = (sin a / (1 + cos a)) = ((1 - cos a) / sin a)

Now we can plug in values:

tan(5π/8) = (sin(5π/4) / (1 + cos(5π/4)) = ((1 - cos(5π/4)) / sin(5π/4)

tan(5π/8) = (-√2/2) / (1 + (-√2/2)) = (1 - (-√2/2)) / (-√2/2)

tan(5π/8) = ((-√2/2)) / ((2 - √2)/2) = ((2 + √2)/2) / (-√2/2)

Now we can solve the first half:

(-√2/2)(2 / (2 - √2))
(-√2/2)((4 + 2√2) / 2)
(-√2/2)(2 + √2)
(-2√2 - 2)/2
-√2 - 1

tan(5pi/8) = -√2 - 1

4 0

2 years ago