Someone help me with this worksheet plz

Mathematics

1 answer:

Ber [7]4 years ago

4 0

You need to fill out bar graph

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Find the scale for 10cm=5m

Ivanshal [37]

10 cm = 5m
10/10 = 5/10
1 cm = 1/2 m

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4 years ago

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The manager of a night club in boston stated that 95% of the customers are between the ages of 21 and 27 years. if the age of cu

11111nata11111 [884]

95% of a normal distribution lies within ±1.96 standard deviations of the mean. That is, ±3 years represents ±1.96 standard deviations, so ...
.. the standard deviation is 3/1.96 = 1.53 years.

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3 years ago

Plz I need by tonight

irina [24]

184÷8=23

the answer is 23

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4 years ago

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Here is a tunnel for a toy train.

jonny [76]

The <em>total</em> area of all six faces of the tunnel is $614.197\pi$ square centimeters.

<h2>Procedure - Surface area of a tunnel for a toy train</h2>

The surface area of the solid ( $A$ ) used to represent the tunnel for a toy train is the sum of its six faces (two <em>semicircular</em> sections, inner <em>semicircular</em> arc section, outer <em>semicircular</em> arc section, two rectangles).

<h3>Determination of the surface area of the tunnel based on information of the diagram</h3>

We calculate the surface area as following:

$A = 2\cdot \frac{\pi}{2} \cdot [(10\,cm)^{2}-(8\,cm)^{2}] + \pi\cdot (8\,cm)\cdot (30\,cm) + \pi\cdot (10\,cm)\cdot (30\,cm) + 2\cdot (2\,cm)\cdot (30\,cm)$