For this case we have that by definition:
Where,
- <em>s: speed
</em>
- <em>d: distance
</em>
- <em>t: time
</em>
Therefore, we have then:
Thus, replacing values we have:
Answer:
An expression that calculates the speed in meters per second of an object that travels to distance of 40 m every 10 s is:
Option C.
-5x^2-8x+2
its a trinomial and its degree is 2
f(x)=−7x 2 +8x+2f, left parenthesis, x, right parenthesis, equals, minus, 7, x, squared, plus, 8, x, plus, 2 What is the value o
vlada-n [284]
The discriminant of the function is 120, and the function has 2 different x-intercepts
<h3>How to determine the discriminant?</h3>
The function is given as:
f(x) = -7x^2 + 8x + 2
The discriminant (d) is calculated using:
D =b^2 - 4ac
So, we have:
D = 8^2 - 4 * (-7) * 2
Evaluate
D = 120
Because the value of D is greater than 0, then the function has 2 different x-intercepts
Read more about quadratic functions at:
brainly.com/question/1214333
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Answer:
the third one down
Step-by-step explanation: