ALL LINES CAN BE REPRESENTED IN THE FORM .
We know that:
and
Observe that:
So:
But we know that , so:
Since:
So the line is:
Please help im being timed :(!!!I dont know what to do!
1 answer:
You might be interested in
7.5 = x + 
equals x = 6.
First, subtract from both sides. / Your problem should look like: 7.5 - = x.
Second, simplify 7.5 - to 6. / Your problem should look like: 6 = x.
Third, switch sides. / Your problem should look like x = 6, which is your answer.
First, subtract
Second, simplify 7.5 -
Third, switch sides. / Your problem should look like x = 6, which is your answer.
1) Probability: 7/30 (or 23.3%)
2) Probability: 21/100 (or 21.0%)
Step-by-step explanation:
1)
At the beginning, there are 10 marbles in total in the bag, of which 7 are green and 3 are blacks.
So the probability of choosing a green marble as first is:
Then, after he picked a green marble, there are only 9 marbles left in the bag, of which 6 are green and 3 are black. Therefore, at the second time, the probability of choosing a black marble will be
Therefore, the probability that Malik will draw a green marble first and then a black marble is the product of the two probabilities:
In percentage, this is
2)
In this second case, the same experiment is repeated by this time the first ball is put back into the back after the first draw.
The probability that Malik will draw a green marble at the first attempt is the same as before:
Later, the green marble is put back in the bag, so we still have 7 green marbles and 3 black marbles. Therefore, the probability of choosing a black marble at the second draw is
Therefore, the overall probability is
In percentage,
3)
The probability in the second case is lower because in the second case, the green marble is put back into the bag after the first draw, therefore at the second draw the probability of choosing a black marble is less than the first case (because in the 2nd case, there are more marbles in total to choose from, so the probability of choosing a black marble will be less).
Learn more about probability:
#LearnwithBrainly