Solve the equation by completing the square
2 answers:
Answer:
r=18 or r= -4
Step-by-step explanation:
Please see attached picture for full solution.
Before completing the square, ensure that the coefficient of r^2 is 1 and bring all the terms to the left hand side. In this case, we do not have to do this as it is already done.
Since the sign before '14r' is a negative sign, use the formula as shown in the first picture.
We know that the value of 'b' in the formula is 7 because 2(r)(b)= 14r. Hence,
2b= 14
b= 7
Step 5: remember to add '±' whenever you introduce a square root.
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Answer:
76%, , and Likely
Step-by-step explanation:
The problem tells us that P(red) = 0.76
0.76 as a percentage is represented as 76 out of a 100 or 76%
0.76 as a fraction is which can be simplified to
by dividing the numerator and denominator by 4
The probability could be considered "Likely" as it is above 50%