Answer:
{-15, -5}
Step-by-step explanation:
The constant on the left needs to be the square of half the x-coefficient:
(20/2)^2 = 100
To get it to that value, we can add 18 to both sides of the equation:
x^2 +20x +100 = 25 . . . add 18 to both sides of the equation
(x +10)^2 = 25 . . . . . . . . write the left side as a square
x +10 = ±√25 = ±5 . . . . . take the square root
x = -10 ±5 = {-15, -5}
The solutions are x = -15 and x = -5.
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The attached graph shows the solutions to ...
x^2 +20x +82 -7 = 0 . . . . . the result of subtracting 7 from both sides
Answer:
three hydrogen atoms
Step-by-step explanation:
H3 + Po4 ----> H3Po4
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Answer is <span>D. 6.24 × 106
hope that helps</span>
The probability that at least one of them has an injection-site reaction is: 0.5356.
<h3>
Probability</h3>
Using this formula
Probability of atleast one= 1- (1- Proportion)^n
Where:
Proportion=.12
Sample size=n=6
Let plug in the formula
Probability of atleast one=1-(1-.12)^6
Probability of atleast one=1-(.88)^6
Probability of atleast one=1-.4644041
Probability of atleast one=0.53559
Probability of atleast one=0.5356 (Approximately)
Therefore the probability that at least one of them has an injection-site reaction is: 0.5356.
Learn more about probability here:brainly.com/question/20411748
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