You put the bar over the first number after the decimal
1.09÷3= .3633 each
4.49÷12= .37416 each
8.78÷24= .3658 each
so the first one
Answer:
x = -2 ±√5
Step-by-step explanation:
You want to complete the square by adding the square of half the coefficient of the linear term:
x^2 + 4x + (4/2)^2 = 1 + (4/2)^2
(x +2)^2 = 5 . . . . . simplify
x +2 = ±√5 . . . . . . take the square root
x = -2 ±√5 . . . . . . subtract 2. This is the solution.
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For the problem in the picture, replace x with p in the above.
<h3><u>Answer;</u></h3>
= 3,391 viruses
<h3><u>
Explanation;</u></h3>
- The population density is 1.2 viruses per square millimeter.
- This means, each square millimeter is occupied by a population of 1.2 viruses.
Therefore; for an area of 2,826 square millimeters, there will be;
= 2,826 multiplied by 1.2 viruses
= 2,826 × 1.2
= 3391.2 viruses,
and since we can have a fraction or decimal virus then the population would be <u>3391 viruses</u>
Answer: 630
Step-by-step explanation:
Accepts: 4/9
x times 4/9 = 280
x = 630
