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2 years ago

Which figures below are congruent? 1 and 2 2 and 3 1 and 3 2 and 4

Mathematics

1 answer:

zvonat [6]2 years ago

4 0

Answer:

1 and 3

Step-by-step explanation:

since they both are equal shape with equal sizes.

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You earned a 90% on a math test you answered 18 questions correctly how many questions were on the test

jekas [21]

Answer: 20

Step-by-step explanation:

18/20 %90

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2 years ago

A city council has to use its resources to improve either the water supply or the drainage system. At which level is this decisi

Fynjy0 [20]

A city council has to use its resources to improve either the water supply or the drainage system. At which level is this decision made?

The asnswer is: Government

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2 years ago

JUST HELP. HATE MATH! SKSJSJD

PilotLPTM [1.2K]

Answer:

56.5

Step-by-step explanation:

its just division

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2 years ago

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A statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20. Use thi

rjkz [21]

Answer:

\mu = 14.5\\

\sigma = 5.071\\

k = 1.084

Step-by-step explanation:

given that a statistician uses Chebyshev's Theorem to estimate that at least 15 % of a population lies between the values 9 and 20.

i.e. his findings with respect to probability are

$P(9$

Recall Chebyshev's inequality that

$P(|X-\mu |\geq k\sigma )\leq {\frac {1}{k^{2}}}\\P(|X-\mu |\leq k\sigma )\geq 1-{\frac {1}{k^{2}}}\\$

Comparing with the Ii equation which is appropriate here we find that

$\mu =14.5$

Next what we find is

$k\sigma = 5.5\\1-\frac{1}{k^2} =0.15\\\frac{1}{k^2}=0.85\\k=1.084\\1.084 (\sigma) = 5.5\\\sigma = 5.071$

Thus from the given information we find that

$\mu = 14.5\\\sigma = 5.071\\k = 1.084$

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2 years ago

Formula for finding the line of symmetry of a quadratic function?

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It is the line of symmetry of a parabola and divides a parabola into two equal halves that are reflections of each other about the line of symmetry. It intersects a parabola at its vertex. It is a vertical line with the equation of x = -b/2a.

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2 years ago

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