Answer:
7x
Step-by-step explanation:
4x−6+3x+6
=4x+−6+3x+6
Combine Like Terms:
=4x+−6+3x+6
=(4x+3x)+(−6+6)
=7x
To find the probability of drawing certain colour of balls, we first need to find the total number of balls:
5 + 7 +5 = 17
<u>For the number of red balls that need to be added</u>
The original probability of drawing a red ball:
red ball/ total number of balls
= 5/17
To find the number of balls required, we can set an equation.
Let the number of red balls that need to be added be x.
5+x / 17+x = 5/6
(5+x) x 6 = (17+ x) x5
30 + 6x = 85 + 5x
6x - 5x = 85 - 30
x = 55
Therefore, <u>55</u> red balls need to be added.
<u>For the number of black balls that need to be added</u>
The original probability of drawing a white ball:
white ball/ total number of balls
=5/17
To find the probability required, we can set an equation.
Let the number of black balls that need to be added be y.
5/ 17 + y = 1/6
5 x 6 = 17 + y
30 = 17 + y
30 - 17 = y
y = 13
Therefore, <u>13</u> black balls need to be added.
Hope it helps!
Answer:
0.97
Step-by-step explanation:
in this case the number 1 signifies 100 percent hence
1-0.03=0.97
:))) enjoy your day
Answer:
The probabilities that a flight is more than 140 minutes would be 32.2%.
Step-by-step explanation:
Given that a trip between New York and Chicago lasts between 120 and 150 minutes, with probabilities uniformly distributed within that time range, to calculate the probabilities that the trip lasts more than 140 minutes, we must perform the following calculation:
First, determine the range of minutes available for arrival. Thus, between 120 and 150, including both ends, there is a 31 minute difference (150-119). Therefore, since the 100% arrival probability is evenly distributed between these minutes, each minute has a 3.22% probability that the plane will arrive at that time (100/31 = 3.22).
Therefore, since the question points to a journey of more than 140 minutes, we must consider the time from the 141 minute journey, that is, 10 minutes between 141 and 150. Thus, the probabilities that the trip lasting more than 140 minutes will be 32.2%.
Answer:
Ok I can definitely answer this but maybe add a picture or a little problem for us because we can’t answer the question without something to tell us what the question Is about. if you post another one of those with a picture then I will be more than glad to answer it.
