So, first set the two Y values equal to each other.
4x+9 = -1+8x
Add and subtract values to both sides making the x coordinates on one side:
4x = 10
Finally, divide.
x = 10/4 = 2.5
Answer:
t(2,-2),C(2,-5),z(5,-4),f(5,0)
Step-by-step explanation:
because it reflects across the x-axis the y changes to the opposite.
$7.5 * 10^9 = $7.5 * 1,000,000,000 = $7,500,000,000
It is seven billion, five-hundred million dollars.
Using it's concept, the experimental probability that in a group of 4 students, at least one of them has green eyes is of 0.45 = 45%.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>. An experimental probability is calculated considering the results of previous trials.
In this problem, there were 20 trials. The digit 9, which represents a student with green eyes, appears at least once in 9 of the the trials, hence the probability is:
p = 9/20 = 0.45 = 45%.
More can be learned about probabilities at brainly.com/question/14398287
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