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3 years ago

Please!! What's the right answer. Mathematics 7 the Grade.

Mathematics

1 answer:

elixir [45]3 years ago

3 0

Answer:

0.2x+5>2

Step-by-step explanation:

$0.2x + 5 > 2 \\ \: \: \: - 5 > - 5 \\ 0.2x > - 3 \\ \div .2 > \div .2 \\ x > - 15$

sub 5 from both sides

divide .2 from both sides

x>-15

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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

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

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

$P(A' n B) =0.0403$

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4 years ago

A relation is given in the table below write out the ordered pairs for the inverse and then determine if the inverse is a functi

postnew [5]

B, the inverse is not a function, because to the x-value 0 the inverse relation orders two values: the 1 and the 5 as well.

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3 years ago

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WHAT IS 4 TIMES TWO THIRDS IN A MIXED FRACTION

Alex73 [517]

$\frac{4}{1}$ × $\frac{2}{3}$ = $\frac{8}{3}$
You then divide the numerator(top) by the denominator(bottom)
$\frac{8}{3}$ = $2 \frac{2}{3}$
Your answer is $2 \frac{2}{3}$

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3 years ago

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B to the eighth power multiplied by b to the fourth power

scZoUnD [109]

U just add the exponents.

b^8 x b^4 = b^12

hope this helps :)

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3 years ago

If sin θ = 3/5 find the value of 4 tanθ + 3 sinθ – 6 cosθ

zepelin [54]

Step-by-step explanation:

If sine theta is 3/5, taking the sine inverse will give you 36.87°.

4tan theta is 4 × tan36.87 = 3

3sin theta = 3 × sin36.87 = 1.8

6cos theta is 6× cos36.87 = 4.8

Therefore, it becomes 3 + 1.8 - 4.8 = 4.8 - 4.8

The answer is 0

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