Please help. I’ll mark you as brainliest if correct . Dave took an exam with 40 questions. He answered 26 correctly. What was hi
1 answer:
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Answer:
I believe it is the top right scatterplot, I can't tell which letter, I think B though.
Step-by-step explanation:
If you were to put a line of best fit for each graph, the top right scatterplot would be the only one that has a straight line of best fit.
Hope this helps :)
The solutions of the quadratic equation x² - 5x - 36 = 0 are -4 and 9.
The graph is attached below.
- We are given a quadratic function.
- A polynomial equation of degree two in one variable is a quadratic equation.
- The function given to us is :
- y = x² - 5x - 36
- We need to find the solution of the quadratic function.
- To find the roots, let y = 0.
- x² - 5x - 36 = 0
- Use the quadratic formula.
- In elementary algebra, the quadratic formula is a formula that gives the solution(s) to a quadratic equation.
- x = [-b±√b²-4ac]/2a
- x = [-(-5) ± √25 - 4(1)(-36)]/2(1)
- x = (5 ± √25 + 144)/2
- x = (5 ± √169)/2
- x = (5 ± 13)/2
- x = 9 or x = -4
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