Please help will mark brainlyist

Mathematics

1 answer:

zloy xaker [14]3 years ago

4 0

I got 12, 19/2. The 19/2 can be converted to 9.5.

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one end of a ten- foot ladder is four feet from the base of a wall . how high on the does the top of the ladder touch ??

Jet001 [13]

Answer:

9,2 feet

Step-by-step explanation:

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3 years ago

Identify the index in the radical below.<br> A. 1<br> B. 2<br> C. 3<br> D. 4

marysya [2.9K]

Answer:

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Step-by-step explanation:

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2 years ago

Sam’s Music Store wanted to take a survey of the age range of people that visited the store. Over the course of a week, they ask

Aloiza [94]

Given:
40 people

box plot data:
minimum age : 20
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Median: 34
Q3: 42
maximum age: 48

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7 0

2 years ago

A consumer organization inspecting new cars found that many had appearance defects (dents, scratches, paint chips, etc.). While

Murljashka [212]

Answer:

The expected number of appearance defects in a new car = 0.64

standard deviation = 0.93(approximately)

Step-by-step explanation:

Given -

7% had exactly three, 11% exactly two, and 21% only one defect in cars.

Let X be no of defects in a car

P(X=3) = .07 , P(X=2) = .11 , P(X=3) = .21

P(X=0 ) = 1 - .07 - .11 - .21 = 0.61

The expected number of appearance defects in a new car =

E(X) = $\nu$ = $= \sum X P(X) =3\times 0.07 + 2\times0.11 + 3\times0.21 + 0\times0.61$ = 0.64

$\sigma^{2}$ = variation of E(X) = $\sum (X - \nu) ^{2}P(X)$ = $(3 - 0.64) ^{2}\times0.07 + (2 - 0.64) ^{2}\times0.11 + (1 - 0.64) ^{2}\times0.21 + (0 - 0.64) ^{2}\times0.61$