Answer: 2.75
2.8 is basically 2.80 and that is 0.05 more, therefore 2.65 is the smaller number
Answer: last option
Step-by-step explanation:
You need to remember the identity:
You need to find the cosine of angle P, then, you can identify in the figure that:
Therefore, the next step is substitute these values into , then you get:
You can observe that this matches with the last option.
Answer:
the duration of the flight be 1 hour
Step-by-step explanation:
The computation of the duration of the flight is shown below:
Let us assume the duration of the flight be x hours
Now the equation would be
600 ÷ x - 600 x + (1 ÷ 2) = 200
600 ÷ x - 1200 ÷ 2x + 1 = 200
x(2x + 1) = 3
2x² + x - 3 = 0
(2x + 3)(x - 1) = 0
x = 1 hour
hence, the duration of the flight be 1 hour
The same is to be considered
Answer:
3y2 - 4y - 9
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2
Step-by-step explanation:
Answer:
(x - 5)² = 39
Step-by-step explanation:
Given
x² - 10x = 14
To obtain an equivalent equation use the method of completing the square.
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 5)x + 25 = 14 + 25
(x - 5)² = 39
