3 years ago

Please answer number 5 thank you I give brainliest

Mathematics

1 answer:

Dovator [93]3 years ago

5 0

Answer: 489.001

Step-by-step explanation:

Area equals length times width

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Area of circle in terms of pi

joja [24]

Step-by-step explanation:

area=πr²

radius=2

in terms of pi= π2²

ans= 4π

7 0

3 years ago

Oliver has a box of toy cars, but he is not sure how many he has. If he arranges the cars in groups of four, he has three left o

zhenek [66]

Oliver has 23 cars.

Hope this has helped!

8 0

3 years ago

10.) Find the exact value of cos⁡(2 sin^(−1)⁡(3/5) ). Do not use a calculator and show your work!

Talja [164]

Double angle identity for cosine:

$\cos\left(2\sin^{-1}\dfrac35\right)=\cos^2\left(\sin^{-1}\dfrac35\right)-\sin^2\left(\sin^{-1}\dfrac35\right)$

By the Pythagorean theorem, if $\sin x=\dfrac35$ , it follows that $\cos x=\dfrac45$ :

$\cos^2x+\sin^2x=1\implies \cos x=\pm\sqrt{1-\sin^2x}$

where we take the positive root because $-\dfrac\pi2\le\sin^{-1}x\le\dfrac\pi2$ , and $\cos x$ is non-negative throughout this domain.

So we have

$\cos^2\left(\sin^{-1}\dfrac35\right)-\sin^2\left(\sin^{-1}\dfrac35\right)=\left(\dfrac45\right)^2-\left(\dfrac35\right)^2=\dfrac7{25}$

3 0

3 years ago

Emma buys 100384728294857283848474782384782384828 watermelons, she gave 48283848328 to her next-door neighbor. what's her auntie

Nutka1998 [239]

Answer:

Im sorry but you put to many numbers is there anything else you need help wit this just dosent sense sorry!

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3 years ago

Which equation represents this number sentence? Fourteen more than the quotient of a number and 5 is 23

Eddi Din [679]

23=(x/5) + 14
maybe. either that or
23 = (5/x) + 14
but i think the first one is right

6 0

3 years ago

Read 2 more answers