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2 years ago

HELP ME WITH THIS PLZ Just write what ones they are plz :)

Mathematics

2 answers:

jekas [21]2 years ago

8 0

The first one is d and the second one is a. I hope this helps.

slega [8]2 years ago

6 0

The answers are:
a) 64x - 24
b) 19y

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Write an equation and solve

erma4kov [3.2K]

10 divided by 2 minus 1 equals 4

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2 years ago

Read 2 more answers

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

$\lambda = \dfrac{4.5}{7} = 0.64$

$P(x =1)\\\\= \displaystyle\frac{0.64^1 e^{-0.64}}{1!}= 0.33747$

5 0

2 years ago

Are the ratios 2:3 and 8:12 equivalent? Justify you answer.

Lunna [17]

Answer:Yes

Step-by-step explanation:You are multiplying the ratios by 4

3 0

2 years ago

(Will give 25 points) Given the graph of this trigonometic funaction over which domain(s) could inverse function be constructed

GREYUIT [131]

Answer:

ok so i think it it a or b i don't know but hope i am right

Step-by-step explanation:

5 0

2 years ago

9) Solve by the elimination method.<br><br> x + y = -5<br> x - y = 11

vlabodo [156]

<h2><u>Answer:</u></h2>

x = 3

y = -8

<h2><u>Step-by-step explanation:</u></h2>

x + y = -5

x - y = 11

Since the y's will cancel out, we don't need to modify the two equations in any way.

Now, just add the two equations.

x + x = 2x

y + (-y) = 0

-5 + 11 = 6

2x = 6

Divide by 2.

x = 3

To find y, plug 3 in as "x" in one of the two equations.

3 + y = -5

y = -8

6 0

2 years ago