The descriminant is b^2-4ac so for 26 it would be -5^2 - 4 (1) (7). The quadratic formula is -B plus or minus the square root of b squared minus 4ac over 2a
The first one is 25/9
And the second one is 25/36
For this case, the first thing we want to do is substitute the value of y = 15 in the equation.
We have then:
15 = -0.08x ^ 2 + 1.6x + 10
Rewriting we have:
0 = -0.08x ^ 2 + 1.6x + 10 - 15
0 = -0.08x ^ 2 + 1.6x - 5
The solutions are:
x1 = 3.876275643042054
x2 = 16.123724356957947
Nearest whole number:
x1 = 4
x2 = 16
were about 15 tons of trout caught in the lake in the years:
1995 + 4 = 1999
1995 + 16 = 2011
Answer:
The year 1999 and the year 2011
Here's a photo of the solution. Hope this helps and please give brainlist!
New members pay a fee of $18 per month.
Step-by-step explanation:
Given,
Yearly movie rental cost = $231
Registration fee = $15
1 year = 12 months
Let,
x be the fee per month.
12x+15=231
Dividing both sides by 12
New members pay a fee of $18 per month.
Keywords: subtraction, division
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