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2 years ago

2 ÷ 2 × 2 ÷ 2 plz anwers for point

Mathematics

1 answer:

natima [27]2 years ago

7 0

It equals 1 thanks for the potion

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Human visual inspection of solder joints on printed circuit boards can be very subjective. Part of the problem stems from the nu

olga_2 [115]

Answer:

The probability that the selected joint was judged to be defective by neither of the two inspectors is $P(A' n B' ) = 0.8855$

The probability that the selected joint was judged to be defective by inspector B but not by inspector A is $P(A' n B) =0.0403$

Step-by-step explanation:

From the question we are told that

The sample size is $n_s = 10000$

The number of outcome for inspector A is $n__{A}} = 742$

The number of outcome for inspector B is $n__{B}} = 745$

The number of joints judged defective by both inspector is $n(A u B) = 1145$

The the probability that the selected joint was judged to be defective by neither of the two inspectors is mathematically represented as

$P(A' n B' ) = 1 - P(A u B)$

Now

$P(A\ u \ B) = \frac{n(Au B)}{n_s }$

substituting values

$P(A\ u \ B) = \frac{1145}{ 10 000 }$

$P(A' n B' ) = 1 - \frac{1145}{10 000}$

$P(A' n B' ) = 0.8855$

the probability that the selected joint was judged to be defective by inspector B but not by inspector A is mathematically represented as

$P(A' n B) = P(A \ u \ B) -P(A)$

Now

$P(A) = \frac{n__{A}}{n_s}$

substituting values

$P(A) = \frac{742}{10 000}$

$P(A' n B) = \frac{1145}{10 000} - \frac{742}{10 000}$

$P(A' n B) =0.0403$

7 0

3 years ago

Finish the polynomial by adding one number to make it a perfect square x^2+18x+

dsp73

Answer:

Step-by-step explanation:

${x}^{2} + 18x + {(( \frac{1}{2})(18)) }^{2}$

${x}^{2} + 18x + {9}^{2}$

${x}^{2} + 18x + 81$

${(x + 9)}^{2}$

6 0

2 years ago

-4x + 7 which is the coefficient and which is the constant also which is the variable.

Sliva [168]

-4x is the coefficient, 7 is the constant and x is the variable

3 0

3 years ago

Read 2 more answers

What is the value of x? A. 6 B. 5 c. 4 D.3

Mumz [18]

Answer:

Step-by-step explanation:

CD is an angle bisector and divides the opposite side into segments which are proportional to the other 2 sides, that is

$\frac{BC}{AC}$ = $\frac{BD}{AD}$ , substitute values

$\frac{4}{3}$ = $\frac{x}{2.25}$ ( cross- multiply )

3x = 9 ( divide both sides by 3 )

x = 3 → D

8 0

3 years ago

Solve the system of equations.

lord [1]

Answer is B.) (-3,-3) and (2,7)

3 0

3 years ago