Which is the correct inequality to solve the problem below?

Mathematics

1 answer:

olchik [2.2K]3 years ago

5 0

Answer:

the answer is A j+ 9> 65

Step-by-step explanation:

if Lindsey is 9 inches taller than Jessica if you add 9 inches to Jessica's height then you will get Lindsey's height, which is great than 65 so you need to put the correct sign in which is >.

hope this helps!! :)

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What is x=2yz for z

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Answer

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Step-by-step explanation:

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1)a chord of length 18cm midway the radius of a circle. calculate the radius of the circle correct to 1d.p. 2)if two parallel ch

kykrilka [37]

Part 1:

Given that the length of the chord is 18 cm and the chord is midway the radius of the circle.

Thus, half the angle formed by the chord at the centre of the circle is given by:

$\cos\theta=\frac{\left( \frac{1}{2} r\right)}{r}= \frac{1}{2} \\ \\ \Rightarrow\theta=\cos^{-1}\left( \frac{1}{2} \right)=60^o$

Now,

$\sin60^o= \frac{9}{r} \\ \\ \Rightarrow r= \frac{9}{\sin60^o} =10.392$

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Part 2I:

Given that the radius of the circle is 10 cm and the length of chord AB is 8 cm. Thus, half the length of the chord is 4cm. Let the distance of the mid-point O to /AB/ be x and half the angle formed by the chord at the centre of the circle be θ, then

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Now,

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Part 2II:

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Thus, the length of chord CD = 2(6.428) = 12.856 which is approximately 12.9 cm.

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Hi i am Grace and i realllyyyyyy need help on this. If you could please help that would be great.

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