Steven recorded the growth of a plant over 10 weeks for his science project. He made a graph that shows how much the plant grew
1 answer:
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Answer:
Step-by-step explanation:
Since we have an x under that radical, we have to get it out from under there. To do that, do the opposite of the square root, which is to square. But because this is an equation, you have to do the same thing to both sides. Doing this gives you
Get everything on one side and set the quadratic equal to 0 and solve for x:
Factor this into 2 factors of (x - 3)(x - 3) = 0. As you can see they are both the same, so x - 3 = 0 and x = 3. That's your answer. x = 3.
His mean score for the first 4 games will be 18 points.
Explanation
In the first 3 games, the mean of the scores is 15 points . Mean is the simple average of some numbers.
So, the total score in first 3 games = points
Now, in the 4th game, he scored 27 points. So, the total score in the first 4 games = points
Thus, the average of scores in first 4 games = points
So, his mean score for the first 4 games will be 18 points.