Answer:
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Answer:Solving the quadratic equation, the coordinates of the roots are: (-1,0) and (-3,0)
The quadratic equation given is:
Which has coefficients .
Now, we find the solutions:
The coordinates of the roots are and , as a root is a value of x when y = 0, thus, in the problem, (-1,0) and (-3,0).
A similar problem is given at brainly.com/question/13729358
Explanation:
The elements that are expected to have similar characteristics with sulfur are oxygen, selenium, tellurium and polonium.
<h3>Elements in the same group</h3>
Elements in the same group in the periodic table share similar chemical characteristics.
<h3>Elements in the same group as sulfur</h3>
The elements found in the same group as sulfur, that share similar chemical characteristics include;
- oxygen,
- selenium,
- tellurium and
- polonium.
Thus, the elements that are expected to have similar characteristics with sulfur are oxygen, selenium, tellurium and polonium.
Learn more about elements in the same group here: brainly.com/question/4098881
Step-by-step explanation:
Assuming the data is as shown, restaurant X has a mean service time of 180.56, with a standard deviation of 62.6.
The standard error is SE = s/√n = 62.6/√50 = 8.85.
At 95% confidence, the critical value is z = 1.960.
Therefore, the confidence interval is:
180.56 ± 1.960 × 8.85
180.56 ± 17.35
(163, 198)
Restaurant Y has a mean service time of 152.96, with a standard deviation of 49.2.
The standard error is SE = s/√n = 49.2/√50 = 6.96.
At 95% confidence, the critical value is z = 1.960.
Therefore, the confidence interval is:
152.96 ± 1.960 × 6.96
152.96 ± 13.64
(139, 167)
Answer:
A rotation, then a reflection.
Explanation:
Rotations and reflections are transformations that do not change the shape of the figures. In this case, whenever these two transformations are involved they form congruent figures. This process occurs first with the rotation and then with the reflection, thus creating a rotational symmetry, keeping the identical figures.