Answer:
150 in^2
Step-by-step explanation:
Answer:
Rui will reach his lowest altitude after diving for 10 seconds
Step-by-step explanation:
In the quadratic equation y = ax² + bx + c, the coordinates of the lowest or the highest point is (h, k), where
- h =
and k = y at x = h
In the given question
∵ d(x) = 
x² - 10 x
∵ d represents his altitude in meters after x seconds
→ Compare it with the form above to find a and b
∴ a = and b = -10
∵ h =
→ Substitute the values of a and b in the rule to find h
∴ h = 
= 10
∴ h = 10
∵ h is the x-coordinate of the lowest point
∴ The time of the lowest altitude is 10 seconds
∴ Rui will reach his lowest altitude after diving for 10 seconds
Avery can explain to her school principal that 85% of juniors think there is a lot of homework because several indicators have increased.
<h3>What is an indicator?</h3>
An indicator is a datum that is taken as a reference to analyze the evolution or change of a fact over time. In this case, the indicators would be:
- Weekly hours used to do homework
- Number of students with work for after school.
According to the information, it can be inferred that 85% of Junior students consider that there is an increase in homework because there were the following changes compared to last year:
- Increase in hours spent on after school homework, last year the average was 5 hours, this year it is 8 hours.
- Increase in the number of students with after school jobs, last year it was 135 students, this year it is 215 students.
From the foregoing, it can be inferred that the number of homework has increased in Junior students and that is why now 85% of them consider that homework has increased.
Learn more about indicator in: brainly.com/question/20264817
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Well it says 1 cup of sugar (S) for every 20 cookis (N) is like saying the amount of cookies(N) is increased by a factor of 20 times the cups of sugar (S) used. which can be written:
cookies(N) = 20 * cups sugar (S)
So you just get rid of the words and use the variables S and N and get
N = 20S
that is the equation. to graph it just plug in a few numbers for s and get the n. It's just like x and y but where x is S and y is N
