Answer:
39/25
Step-by-step explanation:
i use a very good app to find the answer
Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula.
x = −1 ± i√2
There's no real solutions
Answer:
35 hectometers
Step-by-step explanation:
1 kilometer=10 hectometers
3 1/2=7/2
7/2*10=35
<u>Answer</u> : The demonstration is below :)
Step-by-step explanation :
<u>We use Pythagoras' </u><u>theorem </u><u>:</u>
- In the triangle ABC we have :
AB² = AC² - BC² = 15² - 9² = 144 = 12²
- In the triangle ABD we have :
DB² = AD² - AB² = 13² - 12² = 5²
cos(a) = BD/AD = 5/13
the first one is x^2 + 6x + 34
the second one is x^2 - 12x + 37
the third one is x^2 + 16