Answer: It's obviously D.
Step-by-step explanation:
Answer:
D.
Step-by-step explanation:
Answer:
- ∠ZXW and ∠ZXY are right angles
Step-by-step explanation:
- <em>Two right triangles are congruent if the hypotenuse and one corresponding leg are equal in both triangles</em>
<u>We have indication of:</u>
Missing information is just confirmation that both of them are right triangles
<u>This is:</u>
- ∠ZXW and ∠ZXY are right angles
Correct answer option is B
Through 1-3 There should be a line that goes from (0,0) to (3,15) as they did work for three hours. The rest seems fine.
Consider the two functions as
<span>y1(x) =3x^2 - 5x,
y2(x) = 2x^2 - x - c
The higher the value of c, father apart the two equations will be.
They will touch when the difference, i.e. y1(x)-y2(x)=x^2-4*x+c has a discriminant of 0.
This happens when D=((-4)^2-4c)=0, or when c=4.
(a)
So when c=4, the two equations will barely touch, giving a single solution, or coincident roots.
(b)
when c is greater than 4, the two curves are farther apart, thus there will be no (real) solution.
(c)
when c<4, then the two curves will cross at more than one location, giving two distinct solutions.
It will be more obvious if you plot the two curves in a graphics calculator using c=3,4, and 5.
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