1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zlopas [31]
3 years ago
12

Please simplify these expressions

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
8 0
-70r+80
-16n-62


:)))))))
Oksana_A [137]3 years ago
5 0

10( - 2 - 9r) + 10(10 + 2r) =  - 70r + 80 \\ 2(7n - 10) - 6(5n + 7) =  - 16n - 62
You might be interested in
2. How much money will you have in 2 years if you put $400 in the
jolli1 [7]
456!!!!!!!!!!!!!!!!!!
5 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
3 years ago
Suppose an isosceles triangle ABC has A=30 and b=c=5. what is length of a squared
Mrac [35]
The awnser is the simplified stystem is the arbitrary solution of the original system of equations
8 0
3 years ago
QUICKKKKKKK
Stella [2.4K]

Answer:

Steps For Solving Real World Problems

2. Highlight the important information in the problem that will help write two equations.

3. Define your variables.

4. Write two equations.

5. Use one of the methods for solving systems of equations to solve.

6. Check your answers by substituting your ordered pair into the original equations.

4 0
3 years ago
Read 2 more answers
What 1/4(3.14)(5.4^3)(12)<br><br>and any player boys out there<br>plzzzzzz im bored
Soloha48 [4]

Answer is 1483.31088

Explanation:

It is asked that =(\frac{1}{4})(3.14)(5.4^{3} )(12)\\=(3.14)(5.4^{2} )(3)\\\\=(3.14)(157.464)(3)\\=1483.31088\\

Answer is 1483.31088

6 0
3 years ago
Read 2 more answers
Other questions:
  • For the function f(x) =<br> x 1/3/4<br> find f-1(x).
    7·1 answer
  • 0,4 Find the roots of the following quadratic equations
    7·1 answer
  • Solve the equation. Select the correct choice below and if necessary, fill in the answer box to complete your choice. The soluti
    9·1 answer
  • Neptunes average distance from the sun is 4.503x10^9 km. Mercury’s average distance from the sun is 5.791 x 10^7 km. About how m
    9·1 answer
  • Boxes of granola are on sale at a price of 2 for $4.50. There are 12 ounces of
    9·1 answer
  • Which rate has the same unit rate as 8 books in 12 weeks?
    9·2 answers
  • Describe a real world situation where you might use the Pythagorean Theorem. Help due today :))
    15·1 answer
  • I need an explanation for this PLEASEE!
    15·1 answer
  • Kent is a real estate agent. He gets 2.5% commission on each house he sells. a) Find the commission Kent gets if he sells a hous
    11·2 answers
  • 100 points what is 6x2
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!