4 years ago

PLEASE HELP FAST! ITS EASY! WILL GIVE BRAINLIEST!

Mathematics

1 answer:

abruzzese [7]4 years ago

6 0

Answer:

160 kilometers per hour

9560 kilometers per minute

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Answer:

Britney is correct

Step-by-step explanation:

Gabrielle is wrong because when mutiply -6 and -4, the negatives cancel out to give +24.

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4 years ago

A running track consists of two parallel lines that are connected at each end but the curved boundary of a semicircle. The paral

saveliy_v [14]

Answer:

The area inside the running track is 248.5 m².

Step-by-step explanation:

The area inside the running track is given by the sum of the area of a rectangle and the area of a semicircle:

$A_{t} = A_{r} + 2A_{c}$

$A_{t} = x*(2r) + 2*(\frac{\pi r^{2}}{2})$

Where:

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Hence, the total area is:

$A_{t} = 30*7 + \pi (3.5)^{2} = 248.5 m^{2}$

Therefore, the area inside the running track is 248.5 m².

I hope it helps you!

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3 years ago

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Completely factorize (2x+3)^-2 + 2x(2x+3)^-3

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Hello,

$\dfrac{1}{(2x+3)^2} + \dfrac{2x}{(2x+3)^3} \\

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