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2 years ago

[ Please help! ] Choose the equation that represents the graph below.

Mathematics

1 answer:

Kitty [74]2 years ago

8 0

The line crosses the x -axis at point (9,0) and the y-axis at point (0,6).

If the equation of the line is $y=kx+b,$ then substitute the coordinates of the points into this equation:

1) $0=9k+b;$

2) $6=b.$

Substitute the second equation into the first:

$9k+6=0,\\ \\k=-\dfrac{2}{3}.$

The equation of the line is

$y=-\dfrac{2}{3}x+6.$

Answer: option C

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Answer:

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2 years ago

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The sales tax for an item was $15.60 and it cost $390 before tax. Find the sales tax rate. Write your answer as a percentage.

labwork [276]

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Step-by-step explanation:

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3 years ago

The number of accidents that occur at a busy intersection is Poisson distributed with a mean of 4.5 per week. Find the probabili

Mariana [72]

Answer:

a) 0.01111

b) 0.4679

c) 0.33747

Step-by-step explanation:

We are given the following in the question:

The number of accidents per week can be treated as a Poisson distribution.

Mean number of accidents per week = 4.5

$\lambda= 4.5$

Formula:

$P(X =k) = \displaystyle\frac{\lambda^k e^{-\lambda}}{k!}\\\\ \lambda \text{ is the mean of the distribution}$

a) No accidents occur in one week.

$P(x =0)\\\\= \displaystyle\frac{4.5^0 e^{-4.5}}{0!}= 0.01111$

b) 5 or more accidents occur in a week.

$P( x \geq 5) = 1-\displaystyle \sum P(x$

c) One accident occurs today.

The mean number of accidents per day is given by

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2 years ago

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Rashid [163]

Answer:

VII,V,IV,VI

Step-by-step explanation:

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