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KatRina [158]
2 years ago
7

Determine the radius in metres Diameter=2230mm height=3130mm​

Mathematics
2 answers:
Maru [420]2 years ago
6 0

Answer: 1.115 metres

Step-by-step explanation:

     The radius is half the diameter.

2,230 mm / 2 = 1,115 mm

     To turn mm into metres, we divide the length by 1,000.

1,115 mm / 1,000 = 1.115 metres

irga5000 [103]2 years ago
5 0

Answer:

1.115m

Step-by-step explanation:

radius =  \frac{diameter}{2}  \\  =  \frac{2230}{2}  \\  = 1115mm \\  = from \: mm \: to \: m \\  =  \frac{1115}{1000}  \\ 1.115m

Please rate brainliest if you think I deserve

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Find the expected value and the variance of the number of times one must throw a die until the outcome 1 has occurred 5 times.
Kazeer [188]

Answer: E(X) = 30; Var[X] = 180

Step-by-step explanation: This is a <u>Bernoulli</u> <u>Experiment</u>, i.e., the experiment is repeated a fixed number of times, the trials are independents, the only two outcomes are "success" or "failure" and the probability of success remains the same, So, to calculate <em><u>Expected</u></em> <em><u>Value</u></em>, which is the mean, in these conditions:

E(X)=\frac{r}{p}

r is number of times it is repeated

p is probability it happens

Solving:

E(X)=\frac{5}{1/6}

E(X) = 30

<u>Variance</u> is given by:

Var[X]=\frac{r(1-p)}{p^{2}}

Var[X]=\frac{5(1-1/6)}{(1/6)^{2}}

Var[X]=5.\frac{5}{6}.6^{2}

Var[X] = 180

Expected Value and Variance of the number of times one must throw a die until 1 happens 5 times are 30 and 180, respectively.

4 0
3 years ago
What is the slope of a line that passes through (-4,-13) and (19,11)
inysia [295]
The slope of the line is the gradient, which you can find through rise over run

m (gradient) = (y1 - y2) / (x1 - x2)

where (x1, y1) is the coordinate of the first point, and (x2, x2) is the coordinate of the second point

in your question: 
x1 = -4
x2 = 19
y1 = -13
y2 = 11

m = (-13 -11) / (-4 -19) = -24 / -23 = 24/23 or 1.04 (2d.p.)

hope that helps :)
3 0
3 years ago
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Answer:

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Step-by-step explanation:

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M = 3 Multiplier Ratio Division Calculation

Rr = Rn × M : Rd × M

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Rr = 18 : 6

4 0
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Margo used 864 heads to make a necklace for the art club. She made 24 necklaces with the beads. If each necklace has the same nu
Taya2010 [7]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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