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3 years ago

Gordon rolls a fair dice 660 times. how many times would gordon expect to roll a two?

Mathematics

2 answers:

EleoNora [17]3 years ago

8 0

Answer:

110 times

Step-by-step explanation:

The probability (P) of rolling a 2 is

P(2) = $\frac{1}{6}$

expected number = $\frac{1}{6}$ × 660 = 110

Mashutka [201]3 years ago

4 0

Answer:

110

Step-by-step explanation:

a probabability of rolling a 2 on a dice is 1/6, and times that by 660 is 660/6 which equals 110

hope this helps!

please give brainliest. Thanks!

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Sixteen college freshmen were asked to record the number of alcoholic drinks they typically consume in a week. Here are their da

rjkz [21]

Solution: The correct option is d. 8.75

<u>Explanation:</u>

The formula for variance is:

$Variance =\frac{\sum(x-\bar{x})^{2}}{n}$

First we need to find the mean $\bar{x}$ of the given data:

$\bar{x}=\frac{2+4+6+0+1+10+9+0+6+3+6+8+5+4+6+2}{16}=\frac{72}{16} =4.5$

Now let's find $\sum(x-\bar{x})^{2}$ , please have a look at the attached picture:

$\therefore Variance = \frac{140}{16}=8.75$

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3 years ago

What is the value of 8(15-4)/4^2-5

kolbaska11 [484]

Answer: 0.5

Step-by-step explanation:

Android calculator accepts the above question via copy and paste, and gives 0.5

The point of this question is to try to discover whether or not you know what the expression means.

Rewriting it as (8(15-4)/(4×4)) - 5 would show that you know the meaning. You can check that by feeding it into the calculator as well.

4 0

3 years ago

A cylinder holds 27.72 litres of water,when full.Find the hieght of the cylinder if the diameter is 42cm

krek1111 [17]

Answer:

27.72litres=27.72×1000 cm^3

(¡)Height of cylinder=27720×7/(22×21^2)=20cm

Step-by-step explanation:

(¡)First convert litres in to cm^3 take it as the volume of the cylindrical container

(¡¡)Then use V=22/7×r^2×h equation and substitute the values to V and r. Then find the value of h

#V=27.72×1000 (V= volume)

# r = 42/2=21 (r = radius)

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3 years ago

Carpet for a room measure 3 m by 2 m how many square meters do I need

Mazyrski [523]

3•2= 6 sqare meters

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3 years ago

light travels 3000000 scs if earth is 150 million km away from sun how many minutes it will take the light to come from sun to e

sweet-ann [11.9K]

Speed of light=3×10^8m/s=3×10^5km/s
Distance=150million km=150×10^6km

Now

$\\ \rm\longmapsto Speed=\dfrac{Distance}{Time}$

$\\ \rm\longmapsto Time=\dfrac{Distance}{Speed}$

$\\ \rm\longmapsto Time=\dfrac{150\times 10^6}{3\times 10^5}$

$\\ \rm\longmapsto Time=50\times 10^1$

$\\ \rm\longmapsto Time=500s$

$\\ \rm\longmapsto Time=8.33min$

Can be written as 8min 20s.

5 0

2 years ago

Read 2 more answers