Answer:
Probability of a train on line A arriving on time: 80%
Probability of any train arriving on time: 96%
Step-by-step explanation:
If 18 of the 90 incoming trains on line A arrive late, we have that 90 - 18 = 72 trains of the 90 arrive on time, so the probability of a train on line A arriving on time is:
P(A) = 72/90 = 0.8 = 80%
on line B, we have that 70 - 14 = 56 trains of the 70 arrived in time, so the probability of a train from line B arriving on time is:
P(B) = 56/70 = 0.8 = 80%
To find the probability of any train arriving on time, we can use this formula:
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = 0.8 + 0.8 - 0.8*0.8
P(A or B) = 1.6 - 0.64 = 0.96 = 96%
Answer:
d
Step-by-step explanation:
10+5=15
-10+5=-5
give brainliest if right.
The solution of the linear equation is a = 11/4.
<h3>
</h3><h3>
How to solve the linear equation?</h3>
Here we have the linear equation:
9 = 4a - 2
We want to solve this for a, so we need to isolate a on one side of the equation.
First, we can add 2 on both sides to get:
9 + 2 = 4a
11 = 4a
Now we can divide both sides by 4 to get:
11/4 = a
The solution of the linear equation is a = 11/4.
If you want to learn more about linear equations:
brainly.com/question/1884491
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Answer:
f(x)=3x-5
g(x)=-6x²+6x+2
f(x)×g(x)
=(3x-5)(-6x²+6x+2)( use distributive property)
=(3x×-6x²)+(3x×6x)+(3x×2)+(-5×-6x²)+(-5×6x)+(-5×2)
=(-18x³)+(18x²)+6x+30x²-30x-10
=-18x³+18x²+6x-30x+30x²-10
=-18x³+18x²-24x+30x²-10
=-18x³+18x²+30x²-10
=-18x³+48x²-10---------------you may write this answer
Hope it's was clear,
please pick me brainliest
