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4 years ago

B) Given equation is, 5x² - 3x -4 =0

Mathematics

1 answer:

aleksklad [387]4 years ago

7 0

Answer : The First Answer is in the picture above and second question is incorrect ..

Step-by-step explanation:

Hope it works out !!

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Which one is true plz I need help

Ulleksa [173]

Answer:

The second one, the second to last one, and the last one.

Step-by-step explanation:

The second one is negative because if you add a negative number with a positive number it becomes negative.

The second to last one is zero because if you add a negative and a positive number that is the same number then it becomes zero.

And the last one, they are both simply positive.

Hope this helps <3

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3 years ago

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14x22 partial products and solve

miss Akunina [59]

14x22 equals 308. Just multiply. Good work, smarty!

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4 years ago

Seventy percent of all vehicles examined at a certain emissions inspection station pass the inspection. Assuming that successive

LenaWriter [7]

Answer:

(a) The probability that all the next three vehicles inspected pass the inspection is 0.343.

(b) The probability that at least 1 of the next three vehicles inspected fail is 0.657.

(d) The probability that at most 1 of the next three vehicles passes is 0.216.

(e) The probability that all 3 vehicle passes given that at least 1 vehicle passes is 0.3525.

Step-by-step explanation:

Let X = number of vehicles that pass the inspection.

The probability of the random variable X is P (X) = 0.70.

(a)

Compute the probability that all the next three vehicles inspected pass the inspection as follows:

P (All 3 vehicles pass) = [P (X)]³

$=(0.70)^{3}\\=0.343$

Thus, the probability that all the next three vehicles inspected pass the inspection is 0.343.

(b)

Compute the probability that at least 1 of the next three vehicles inspected fail as follows:

P (At least 1 of 3 fails) = 1 - P (All 3 vehicles pass)

$=1-0.343\\=0.657$

Thus, the probability that at least 1 of the next three vehicles inspected fail is 0.657.

(c)

Compute the probability that exactly 1 of the next three vehicles passes as follows:

P (Exactly one) = P (1st vehicle or 2nd vehicle or 3 vehicle)

= P (Only 1st vehicle passes) + P (Only 2nd vehicle passes)

+ P (Only 3rd vehicle passes)

$=(0.70\times0.30\times0.30) + (0.30\times0.70\times0.30)+(0.30\times0.30\times0.70)\\=0.189$

Thus, the probability that exactly 1 of the next three vehicles passes is 0.189.

(d)

Compute the probability that at most 1 of the next three vehicles passes as follows:

P (At most 1 vehicle passes) = P (Exactly 1 vehicles passes)

+ P (0 vehicles passes)

$=0.189+(0.30\times0.30\times0.30)\\=0.216$

Thus, the probability that at most 1 of the next three vehicles passes is 0.216.

(e)

Let X = all 3 vehicle passes and Y = at least 1 vehicle passes.

Compute the conditional probability that all 3 vehicle passes given that at least 1 vehicle passes as follows:

$P(X|Y)=\frac{P(X\cap Y)}{P(Y)} =\frac{P(X)}{P(Y)} =\frac{(0.70)^{3}}{[1-(0.30)^{3}]} =0.3525$

Thus, the probability that all 3 vehicle passes given that at least 1 vehicle passes is 0.3525.

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3 years ago

What is the order of rotational symmetry for a rhombus?

Ulleksa [173]

Answer:

Step-by-step explanation:

The order (or degree) of rotational symmetry of a rhombus is 2. This is because it looks the same only when rotated 0° or 180° (2 angles, total).

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3 years ago

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The average ages of three persons 27 years. Their ages are in the proportion of 1:3:5. what is the age in years of the youngest

Svetlanka [38]

1+3+5 = 9 27 divided by 9 = 3 Age 1 = 3. Age 2 = 9. Age 3 = 15

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4 years ago

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