![Gabyngreen](/avatars/2597.jpg)
Gabyngreen
17.08.2019 •
Mathematics
Show me how to work the equation for 6×+20=-4
Solved
Show answers
More tips
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
- H Health and Medicine What vaccines do children need?...
- H Health and Medicine Reasons for the Appearance of Warts: Everything You Need to Know...
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- H Health and Medicine Contraceptive Pills After 35: The Importance Of Choosing The Right Medication...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
Answers on questions: Mathematics
- M Mathematics I m not sure how to make the -4 positive...
- M Mathematics Calculate the effective annual interest rate if the annual interest rate, i, is 9%. a. 0.0855 b. 0.0900 c. 0.0938 d. 0.0959...
- M Mathematics In a parallelogram whose area is 15, the base is represented by x+7 and the altitude x-7. find the base of parallelogram....
- M Mathematics Factor the following quadratic equation;...
- M Mathematics Solve the differential equation dy/dx = 5-y?...
- M Mathematics Yesterday , elsa had k baseball cards today she gave 12 away ,using k write an expression for the number of cards elsa has left...
- M Mathematics I m struggling on my math homework (〒︿〒)...
- M Mathematics Write the polynomial in descending order : 5a^2b – 13ab + 7a^3 – 4b...
- M Mathematics A45g serving of molly s favorite cereal contains 18g of sugar. what percent of the cereal is sugar?...
- M Mathematics 1.the diagonals of a rhombus are perpendicular.. always sometimes. never. 2.the diagonals of a rectangle are equal.. always sometimes. never. 3.the diagonals of a trapezoid are...
Ответ:
Step-by-step explanation:
6x + 20 = -4
subtract 20 from both sides
6x = -16
divide by 2
3x = -8
x = -8/3Ответ:
a) 33.33%)
b) 135 minutes
c) 8.66 min
d) 50%
Step-by-step explanation:
a) the probability for a uniform distribution is
P(b<X<a) = (a-b)/(c-d) , where c and d are the maximum and minimum values
therefore the probability that the flight is more than 140 minutes ( and less than 150 since it is the maximum value)
P(140<X<150) = (a-b)/(c-d) = (150-140)/(150-120) = 10/30 = 1/3 (33.33%)
b) the mean (expected value) for a uniform probability distribution is
E(X) = (c+d)/2 = (120+150)/2 = 135 minutes
c) the standard deviation for a uniform probability distribution is
σ²(X)= (c-d)²/12 = (150-120)²/12 = 75 min²
σ = √75 min² = 8.66 min
b) following the same procedure as in a)
P(120<X<135) = (a-b)/(c-d) = (135-120)/(150-120) = 15/30 = 1/2 (50%)