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schepotkina [342]
4 years ago
13

Complete this statement 27a^2x^2+45a^2x+36a^2=9a^2()

Mathematics
1 answer:
marusya05 [52]4 years ago
6 0

Could I ask, is there anything else that can be used to help solve the problem?


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A student spend $56.35 on school supplies at a store where the sales tax is 6.5%. What is the total cost of the supplies?
ArbitrLikvidat [17]

Answer:

$60.01

Step-by-step explanation:

To find tax you first multiply the original price x the tax(make sure to change it into a decimal)

56.35 x 0.065 =3.66

Then you add the original price and the result.

56.35 + 3.66 = $60.01

7 0
3 years ago
The time between telephone calls to a cable television service call center follows an exponential distribution with a mean of 1.
Ulleksa [173]

Answer:

0.52763 is the probability that the time between the next two calls will be 54 seconds or​ less.

0.19285 is the probability that the time between the next two calls will be greater than 118.5 ​seconds.

Step-by-step explanation:

We are given the following information in the question:

The time between telephone calls to a cable television service call center follows an exponential distribution with a mean of 1.2 minutes.

The distribution function can be written as:

f(x) = \lambda e^{-\lambda x}\\\text{where lambda is the parameter}\\\\\text{Mean} = \mu = \displaystyle\frac{1}{\lambda}\\\\\Rightarrow 1.2 = \frac{1}{\lambda}\\\\\lambda = 0.84 \\f(x) = 0.84 e^{0.84 x}

The probability for exponential distribution is given as:

P( x \leq a) = 1 - e^{\frac{-a}{\mu}}\\\\P(a \leq x \leq b) = e^{\frac{-a}{\mu} -\frac{-b}{\mu}}

a) P( time between the next two calls will be 54 seconds or​ less)

P( x \leq 0.9)\\= 1 - e^{\frac{\frac{-54}{60}}{1.2}} = 0.52763

0.52763 is the probability that the time between the next two calls will be 54 seconds or​ less.

b) P(time between the next two calls will be greater than 118.5 ​seconds)

p( x > \frac{118.5}{60}) = P(x > 1.975)\\\\ = 1 - P(x \leq 1.975) \\\\= 1 -1+ e^{\frac{-1.975}{1.2}}\\\\= 0.19285

0.19285 is the probability that the time between the next two calls will be greater than 118.5 ​seconds.

6 0
4 years ago
How to write forty thousand, six hundred nine teen in standard form
svetoff [14.1K]
40,619,000 = forty thousand six hundred nineteen
5 0
3 years ago
Read 2 more answers
NEED HELP!!!<br> Determine whether the two ratios are proportional.<br> 6/36 and 1/6
andrew-mc [135]
Proportional: the same

6 / 36 = 0.166....
1 / 6 = 0.166...

So they are proportional.
You can also multiply/divide (depends) one of the fractions's numerator and denominator by 6 to get your answer.

6 / 36 = 6/6 / 36/6 = 1/6
1/6 = 1*6 / 6*6 = 6 / 36
3 0
3 years ago
Read 2 more answers
The equation y = 0.25x describes a proportional relationship between x and y.
mrs_skeptik [129]
Compare y = 0.25x to 
                y =   k   x

You should see readily that k = 0.25.
3 0
4 years ago
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