3 years ago

Help!

Mathematics

1 answer:

alex41 [277]3 years ago

8 0

A) 5/2x^3-9/4x^2+7/2x-3/2
b) the ans. are not the same.

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Find the arc length of the partial circle.

Serga [27]

Known :

r = 5 cm

θ = 360° - 90° = 270°

Asked :

Arc length of the partial circle = ...?

Answer :

Arc length

$= \frac{θ}{360} \times 2\pi r \\ = \frac{270}{360} \times 2 \times 3.14 \times 5 \\ = \frac{3}{4} \times 31.4 \\ = \frac{3}{4} \times \frac{314}{10} \\ = \frac{942}{40} \\ = 23.55 \: cm$

So, the arc length of the partial circle is 23,55 cm

Hope it helps and is useful :)

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3 years ago

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1.) C
2.) C
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3 years ago

a store is selling hats. All regular price hats are 20% off. Lisa, Carly, and Sam each find a hat to buy. Sandy finds a sun viso

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3 years ago

She has 7 large dogs and 7 small dogs. please help

tatiyna

Answer:

21 small dogs, 42 total dogs

Step-by-step explanation:

7×3=21

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3 years ago

A TV has a listed price of $647.99 before tax. If the sales tax rate is 9.75%, find the total costs of the TV with the sales tax

Lena [83]

Answer:

$647.99

Step-by-step explanation:

Divide the tax rate (9.750%) by 100 to get a decimal rate of 0.09750.

Add 1 to the decimal rate to get 1.09750.

Divide that tax-included price ($647.99) by 1.09750 price to get a pretax price of $590.42.

Subtract the pretax price from $647.99 to get the sales tax amount of $57.57.

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