Answer:
-124
Step-by-step explanation:
The equation for a discriminant is:

So for

a = 7 b = - 4 c = 5
Plug values into the equation.

16 - 140 = -124
Answer:31.4166666667
Step-by-step explanation:
Approximately 1700 megawatts of electricity could be supplied by Hydropower in 2017. Option B is correct.
Given that,
In 2017 there were enough renewable energy sources to supply a total of 9309 megawatts of electricity in a country. The graph shows the proportions that the different renewable energy sources could supply.
<h3>What are percentages?</h3>
the percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.
Here, from the graph contribution of the hydropower is 18.2%.
So the electricity produced through hydropower is,
= 9309 * 18.2%
= 9309 * 18.2/100
= 1694.23
≈ 1700 megawatts
Thus, approximately 1700 megawatts of electricity could be supplied by Hydropower in 2017.
Learn more about percentages here:
brainly.com/question/13450942
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Answer:
40
Step-by-step explanation:
Step-by-step explanation:
9) given

10)standard form equation: y=mx+c
where m = slope and c = y-intercept
given m = 8, c = 12,
equation of line :
