Find the solutions to x^2-10+36=0
1 answer:
Answer:
Only 6
Step-by-step explanation:
We need to factor the equation to find the solution. TO factor we need to find what times what = 36, and what plus what equals -12.
-6 times -6 = 36
and -6 + -6 = -12
So this can be factored into
(x-6)(x-6)=0
We can find the solution by setting each parentheses equal to zero.
x-6 = 0
x = 6
So the only solution is 6
I attached an image that shows an example of factoring.
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Answer:
b) Chemistry
Step-by-step explanation:
To compare both scored we need to standardize the scores using the following equation:
Where x is the score, m is the mean and s is the standard deviation. So, 82 on chemistry is equivalent to:
Because the mean of the scores on the chemistry final exam is equal to 75 and the standard deviation is 15
At the same way, 80 on Calculus is equivalent to:
Because the mean of the scores on the calculus final exam is equal to 83 and the standard deviation is 13
Now, we can compare the values. So, taking into account that -0.2308 is lower than 0.4667, we can said that the student do better in Chemistry.