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3 years ago

Find QR: 3x+22=10x-41

Mathematics

1 answer:

Tatiana [17]3 years ago

6 0

Answer:

x=9

Step-by-step explanation:

subtract 22 from both sides, simplify 3x = 10x-63, subtract 10x from both sides of the equation, simplify -7x = -63, divide both sides of the equation by the same factor -7x/-7 = -63/-7, then simplify

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What is the slope of the line that passes through the points (3,1) and (-2,5)

evablogger [386]

Answer:

D.) -4/5

Step-by-step explanation:

Ok, so we need to calculate the change in y over the channge in x, rise over run.

(3-(-2)=5 1-5=-4) -4/5

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3 years ago

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If the points A, B and C have the coordinates A(5, 2), B(2, −3) and C(−8, 3), show that the triangle ABC is a right-angled trian

bixtya [17]

Answer:

See below.

Step-by-step explanation:

Triangle ABC will be right-angled if 2 of its sides are perpendicular to each other. When sides are perpendicular the product of their slopes = -1.

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4 years ago

What is the expected value for the binomial

Pavlova-9 [17]

Answer:

Step-by-step explanation:

0(162/3125)+1(162/625)+2(216/625)+3(144/625)+4(48/625)+5(32/3125)

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3 years ago

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A computer program has a bug that causes it to fail once in every thousand runs, on average. In an effort to find the bug, indep

Serhud [2]

Answer:

The standard deviation of the number of runs required is 2447.26

Step-by-step explanation:

For each run, there are only two possible outcomes. Either the program fails, or it does not. The probability of the computer failing during a run is independent of other runs. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

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$\sqrt{V(X)} = \sqrt{\frac{r(1-p)}{p^{2}}}$

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This means that r = 6. So

$\sqrt{V(X)} = \sqrt{\frac{6*0.999}{(0.001)^{2}}} = 2447.26$

The standard deviation of the number of runs required is 2447.26

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3 years ago

What’s the answer a picture is attached!!! Please answer

SCORPION-xisa [38]

A because if you were doing it on a quadrant or a number line I think that would be the answer! Not 100% sorry

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4 years ago