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3 years ago

Probability and Statistics question

Mathematics

2 answers:

Tomtit [17]3 years ago

7 0

Answer:

Step-by-step explanation:

A false negative is when you test negative when you should have tested positive

A false positive is when you test positive on a test you should have been negative on

sineoko [7]3 years ago

4 0

C is the answer to your question

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What is the length of DE in the right triangle below ?

olganol [36]

B.25
sorry if my writing is not clear

3 0

3 years ago

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<img src="https://tex.z-dn.net/?f=8%5E%7B2%7D%3Dx%5C%5Cx%2B12%3Dy%5C%5Cy-3%3Dn%5C%5Cn%3D%3F" id="TexFormula1" title="8^{2}=x\\x+

AlexFokin [52]

Answer:

n = 73

Step-by-step explanation:

8² = x ==> x = 64

x + 12 = y ==> y = 64 + 12 = 76

y – 3 = n ==> n = 76 – 3 = 73

Follow my account ^^

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3 years ago

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What is the surface area of the cylinder with a height of 3 m and radius of 4 m? Round your answer to the nearest thousandth.

IgorLugansk [536]

Answer:

The surface area of the cylinder is of 131.947 square meters.

Step-by-step explanation:

Surface area of a cylinder:

The surface area of a cylinder of height h and radius r is given by the following equation:

$S_a = 2\pi r(h+r)$

What is the surface area of the cylinder with a height of 3 m and radius of 4 m?

$h = 3, r = 4$ .

$S_a = 2\pi r(h+r) = 2\pi(3)(3+4) = 42\pi = 131.947$

Height and radius are in meters, so the surface area will be in square meters.

The surface area of the cylinder is of 131.947 square meters.

6 0

3 years ago

Solve the compound inequality 3t-8/5 and 4-t<-7

Sav [38]

Answer: -2.8

Step-by-step explanation:

3t-(8/5) * 4-t < -7

(15t-8)/5 * 4-t < -7

((15t-8)(4-t))/5 < -7

(15t^2)-28t-32< -7

(15t^2)-28t-32-7< 0

(15t^2)-28t-39< 0

Using the quadratic/almighty formula

t= (-b +- ((b^2)-4ac)^(1/2)/2a)

a=15, b=-28, c=-39

t= (-(28) +- (((-28)^2)-4(15)(-39))^(1/2))/2(15))

t= -2.8 or t= 0.9

Since

t<0, then t= -2.8

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3 years ago

Find x in these 45 - 45 - 90 triangles.

PIT_PIT [208]

The X = ( 3, 0 )
but all triangles are 108*

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3 years ago