Answer:
12,280
Step-by-step explanation:
just do 1456×5 :))
Answer:
And we can find this probability using the complement rule:
And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the lifetime of a certain type of battery of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using the complement rule:
And in order to find these probabilities we can use tables for the normal standard distribution, excel or a calculator.
Answer:
34.64 ft
Step-by-step explanation:
Distance from the building = 20 ft
Angle of inclination = π/3 radians
The tangent of the angle of inclination must equal the height of the building divided by the distance of the observer from the building:
The building is 34.64 ft tall
Write an equation to represent this situation, where a represents the amount of money Molly’s brother has.
answer:
45=3x (plato/edmentum users.)
Answer:
M(Mx, My), R(Rx, Ry), S(Sx, Sy)
M is midpoint of RS
=> Rx + Sx = 2Mx => Rx = 2Mx - Sx = 2 x 8 - 9 = 7
=> Ry + Sy = 2My => Ry = 2My - Sy = 2 x 7 - 5 = 9
=> R(7, 9)
Hope this helps!
:)
Answer:
(7,9)
Step-by-step explanation:
Let R:(x,y)
(x+9)/2, (y+5)/2 = 8 ,7
x + 9 = 16
x = 7
y + 5 = 14
y = 9
R: (7,9)
Answer:
C
Step-by-step explanation:
3/4/2/5 = 3*5/4*2
= 15 / 8
5x-8y=14
5x-7y=6
Answer:
In the explanation. :)
Step-by-step explanation:
{x,y}={2,3}
Hope this helps. Have a great day!
Answer:
x = -10, y = -8
Step-by-step explanation:
We will use the method of elimination to find y.
Step 1: 5x - 8y = 14
-
5x - 7y = 6
Step 2: 0x - y = 8
Step 3: y = -8
Now, we have to substitute the y value into one of the original equations. In this case we will use the first equation which is 5x - 8y = 14.
5x - 8(-8) = 14
5x + 64 = 14
5x = - 50
x = -10
Just to make sure we have the right values, we will substitute both values into one of the equations.
5(-10) - 7(-8) = 6
-50 + 56 = 6
6 = 6 True
5(-10) - 8(-8) = 14
-50 + 64 = 14
14 = 14 True
Both of these values work, so they are the answers.
Hope this helps!