Answer:
Vertical
Step-by-step explanation:
You have a vertical line at point (6,0).
Answer:
3
Step-by-step explanation:
Let <em>a</em> be the speed of the plane and <em>w</em> the wind speed.
<em>a</em> - <em>w</em> = (8460 km)/(9 h) = 940 km/h
<em>a</em> + <em>w</em> = (9600 km)/(8 h) = 1200 km/h
Add these speeds together to eliminate <em>w</em> and solve for <em>a</em> :
2<em>a</em> = 1740 km/h
<em>a</em> = 870 km/h
Subtract the first vector from the second to eliminate <em>a</em> and solve for <em>w</em> :
2<em>w</em> = 260 km/h
<em>w</em> = 130 km/h
<h3>Given</h3>
Two positive integers x and y
x - y = 4
x² + y = 68
<h3>Find</h3>
x and y
<h3>Solution</h3>
Add the two equations together.
... (x - y) + (x² + y) = (4) + (68)
... x² + x = 72
Rearrange to standard form and factor.
... x² + x - 72 = 0
... (x + 9)(x - 8) = 0
Use the zero product rule to find the solutions. That rule says the product is zero when one or more factors is zero.
... x + 9 = 0 ⇒ x = -9
... x - 8 = 0 ⇒ x = 8 . . . . . . the positive solution
Then we can find y from
... 8 - y = 4
... y = 4 . . . . . . . add y-4 to the equation
The two positive integers are 8 and 4.
Please, use the symbol " ^ " to denote exponentiation. At first I had no idea what you meant by 3r2.
You are using the approx. formula A = 3 r^2 to find the area.
The given radius is 4.3 inches. Subst. this value for r in the above equation.
Find A (keeping in mind that it's an approximation).
