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shusha [124]
3 years ago
5

Hallllp!!!! please!!!!!!! I will give brainliest!!!!

Mathematics
1 answer:
KonstantinChe [14]3 years ago
8 0
A. Product of a constant factor 12 and two-term factor x+3
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A population of 40 rats living near a restaurant dumpster is growing at a monthly rate of 50%
goldenfox [79]

[(40 ÷ .5) Y] + 40

Parentheses are rat growth

Brackets are rat growth by how many years or just exclude that and the brackets if you don't need to know how many years are there are

The 40 is the amount of rats already there

Growth of rats plus the amount already there.

I'm probably wrong lol

7 0
3 years ago
Let X be the waiting time for a car to pass by on a country road, where X has an average value of 35 minutes. If the random vari
Gelneren [198K]

Answer:

Probability that the wait time is greater than 37 minutes is 0.3474.

Step-by-step explanation:

We are given that the random variable X is known to be exponentially distributed and X be the waiting time for a car to pass by on a country road, where X has an average value of 35 minutes.

<u><em>Let X = waiting time for a car to pass by on a country road</em></u>

The probability distribution function of exponential distribution is given by;

f(x) = \lambda e^{-\lambda x}  , x >0     where, \lambda = parameter of distribution.

Now, the mean of exponential distribution is = \frac{1}{\lambda}  which is given to us as 35 minutes that means  \lambda = \frac{1}{35}  .

So, X ~ Exp( \lambda = \frac{1}{35} )

Also, we know that Cumulative distribution function (CDF) of Exponential distribution is given as;

F(x) = P(X \leq x) = 1 - e^{-\lambda x}  , x > 0

Now, Probability that the wait time is greater than 37 minutes is given by = P(X > 37 min) = 1 - P(X \leq 37 min)

  P(X \leq 37 min) = 1 - e^{-\frac{1}{35} \times 37}        {Using CDF}

                         = 1 - 0.3474 = 0.6525

So, P(X > 37 min) = 1 - 0.6525 = 0.3474

Therefore, probability that the wait time is greater than 37 minutes is 0.3474.

4 0
3 years ago
Beth's team raised $4,239 in a fundraiser. When Beth sends in the information for the
never [62]

Answer:

$4,200

Step-by-step explanation:

4,239 rounds up to 4,240 if you round by tenths but still remains under 4,250. Therefore, it would round down to 4,200.

8 0
3 years ago
A 40​-foot piece of siding is cut into three pieces so that the second piece is four times as long as the first piece and the th
xeze [42]

Answer:

4 ft , 16 ft & 20 ft

Step-by-step explanation:

40 = x + 4x + 5x = 10x --> x = 4

3 0
2 years ago
Put the following equation of a line into slope-intercept form, simplifying all
Scilla [17]

Answer:

y = 1/3x + 1

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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