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OlgaM077 [116]
3 years ago
9

-3.4(-5.5)(3)=. Help me. I need help ASAP

Mathematics
1 answer:
anyanavicka [17]3 years ago
6 0

Answer:

= 56.1

Step-by-step explanation:

first, you can start by multiplying -3.4 by -5.5

-3.4 × -5.5 = 18.7

the number becomes a positive because a negative × a negative = a positive.

the you multiply 18.7 by 3

18.7 × 3 = 56.1

answer= 56.1

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To find the area, A, of a sector, the formula is

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Substitute the values of the variables into the formula above to find the angle, θ, subtended by the sector.

\begin{gathered} 9\pi=\frac{\theta}{360\degree}\times\pi\times6^2 \\ Crossmultiply \\ 9\pi\times360=36\pi\times\theta \\ 3240\pi=36\pi\theta \\ Divide\text{ both sides by 36}\pi \\ \frac{3240\pi}{36\pi}=\frac{36\pi\theta}{36\pi} \\ 90\degree=\theta \\ \theta=90\degree \end{gathered}

To find the length of the arc, s, the formula is

\begin{gathered} s=\frac{\theta}{360\degree}\times2\pi r \\ Where \\ \theta=90\degree \\ r=6\text{ units} \end{gathered}

Substitute the variables into the formula to find the length of an arc, s above

\begin{gathered} s=\frac{\theta}{360}\times2\pi r \\ s=\frac{90\degree}{360\degree}\times2\times\pi\times6 \\ s=\frac{12\pi}{4}=3\pi\text{ units} \\ s=3\pi\text{ units} \end{gathered}

Hence, the length of the arc, s, is 3π units.

4 0
1 year ago
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Step-by-step explanation:

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3 years ago
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Answer:

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