Answer:
a
Step-by-step explanation:
add all together
Answer: ( 3300 , -2750 )
Explanation:
Since Station A detects an explosion 4 seconds before station B. and sound travels at 1100 feet per second.
c + a - ( c - a ) = 4 × 1100
2a = 4400
a = 2200
Using pythagorean theorem to get b
b^2 = c^2 + a^2
b^2 = 3300^2 + 2200^2
b = 6050000
The x-coordinate of the explosion must be 3300. The y-coordinate must also be negative since the first station detects the explosion first.
equation for the hyperbola is
X^2/a^2 + Y^2/b^2 = 1
Explosion must occur at x-axis. (3300)
Substitutes x, a and b into the equation to get y
3300^2/4840000-y^2/6050000 = 1
2.25 - y^2/6050000 = 1
y^2 = 6050000 × 1.25
y^2 = 7562500
y = +/-2750
Since y must be negative
Therefore, the explosion will occur at ( 3300 , -2750 )
The third angle would be 40°
This is because all angles of a triangle add up to 180°
If we know two sides we can figure out the third by adding up the two sides we know and subtracting them from 180°
The final answer when subtracting is 40°
Have a great day!
Answer:
Step-by-step explanation:
You need to use parentheses around the numerator and denominator.
(x-3)(3-x) = -1