Step-by-step explanation:
Since we have given that
Amount of pay rate =$21
If she marked up by 78.7% , so it becomes
So, our amount for pay rate becomes
Now, he said he made a profit of 10%,so it becomes
So, our new pay rate becomes
This is the step through which we can get $41.28.
Answer: 2.1 Find the Vertex of y = x2-17x-50
Parabolas have a highest or a lowest point called the Vertex . Our parabola opens up and accordingly has a lowest point (AKA absolute minimum) . We know this even before plotting "y" because the coefficient of the first term, 1 , is positive (greater than zero).
Each parabola has a vertical line of symmetry that passes through its vertex. Because of this symmetry, the line of symmetry would, for example, pass through the midpoint of the two x -intercepts (roots or solutions) of the parabola. That is, if the parabola has indeed two real solutions.
Parabolas can model many real life situations, such as the height above ground, of an object thrown upward, after some period of time. The vertex of the parabola can provide us with information, such as the maximum height that object, thrown upwards, can reach. For this reason we want to be able to find the coordinates of the vertex.
For any parabola,Ax2+Bx+C,the x -coordinate of the vertex is given by -B/(2A) . In our case the x coordinate is 8.5000
Plugging into the parabola formula 8.5000 for x we can calculate the y -coordinate :
y = 1.0 * 8.50 * 8.50 - 17.0 * 8.50 - 50.0
or y = -122.250
Step-by-step explanation:
The answer is a(-9,0)
Because I know lol
Answer:
Angle of the intercepted arc is equal to the angle at the centre (central angle) but B is not the centre hence XBY is not 144°.
Angle at the circumference (inscribed angle) is half of the central angle, but XBY is not the central angle, so it's not 2×72.
Hence not 144°
Referring the chart I attached, the slope is the ratio of rise to run
So we need to pick two points lying on the line to calculate the slope.
They would be (4,0) and (0,2)
That is for the slope
The y-intercept is where the line touches\crosses\intersects the y-axis...
It is clear from the figure that the line crosses the y-axis at (0,2)
so the<span> y-intercept is
</span>
I hope that
helps!
If you still need help, just let me know!
