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m_a_m_a [10]
2 years ago
11

a school has 520 students. dan surveys a random sample of 50 students and finds that 32 have pet cats. how many students are lik

ely to have pet cats?
Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
8 0
333

32/50 = 0.64

64% of 520 is 332.8 ... hopefully there isn't .80 of a student somewhere in that school, so 333.
tensa zangetsu [6.8K]2 years ago
6 0

Answer:

333

Step-by-step explanation:

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=> 10x = 5510 - 4500 = 1010

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Determine the angle at the centre of a circle with radius 12.0 cm for an arc length of of 21.0 cm.
nata0808 [166]

Answer:

\theta=\dfrac{7}{4}\ \text{radian}

Step-by-step explanation:

We have,

Radius of the circle is 12 cm

Arc length, l = 21 cm

It is required to find the central angle of the circle. The formula for the length of an arc of a circle is :

l=r\times \theta

\theta is central angle

\theta=\dfrac{l}{r}\\\\\theta=\dfrac{21}{12}\\\\\theta=\dfrac{7}{4}\ \text{radian}

So, the angle at the centre of the circle is \dfrac{7}{4}\ \text{radian}.

7 0
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How do you do this?
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