Answer:
3.33times 10^7 because when it is possible to substract 2.24times10^5 from it
Answer:
56%
Step-by-step explanation:
Any number out of 100 is that number's percent.
If it's for say 0.1/100, its 0.1%.
For this case, we must find the quadratic equation equivalent to:
By definition we have to:
So:
So, we have:
Equal signs add up and the same sign is placed.
Different signs are subtracted and the sign of the major is placed.
Answer:
Words to the wise: Please express exponentials as x^2, not x2.
x2 + y2 = 81 should be <span>x^2 + y^2 = 81 = 9^2
Comparing this to x^2 + y^2 = r^2, we see that r= radius=9. y-intercepts are where x=0, so purposely set x=0 and solve for y:
0^2 + y^2 = 9^2. Then y = 9 or y = -9.
The graph intersects the y-axis at (0,9) and (0, -9).</span>
Answer:
B. The value of C is 1
Step-by-step explanation:
Given:
- y = 2x + C is a tangent to parabola y² = 8x
To find:
A line being a tangent to curve means both equations are equal but there has to be only one interception between both graphs.
Therefore, substitute y = 2x+C in y² = 8x:
Expand the expression (2x+C)² using perfect square:
Simplify the equation:
The discriminant says:
- If b²-4ac > 0 then there are two real roots
- If b²-4ac = 0 then there is only one real root
- If b²-4ac < 0 then the are no real roots
For this, we choose b²-4ac = 0 since tangents only have one intersection.
Solve the equation for C:
Therefore, the value of C is 1