Jin is tracking how much food he feeds his dog each week. After 2 weeks, he has used 8 1/2 cups of dog food. After 5 weeks,he ha
1 answer:
You might be interested in
Answer:
The correct options are a,b.
Step-by-step explanation:
The area of sector of a circle equals
Area of a sector =
where
is the angle subtended at the center by the sector
is the radius of circle
This indicates that area of the sector depends on:
1) Radius of circle
2) Angle subtended at the center by the sector
3) Area of sector does not depend on pi.
Also if we know the area of the sector only we cannot calculate area of area of whole triangle as we need one more information either angle of the sector and vice versa.
11. The given parabola has equation:
We complete the square to have the function in the vertex form:
The vertex is (-3,-8), the graph opens down because a=-3<0
Ans: B. Vertex: (−3, −8), opens downward
12. We know the graph of is a parabola that opens up and has its minimum point at the origin.
The range of this function is
A straight line that has its y-intercept below the x-axis (y=3x-6) will not intersect and hence will form a system with no solution.
Ans: D. y equals x squared, y equals 3x minus 6
14. We want to find the zeros of
The factored form is
Ans: C. x = −7, −9
15. The given quadratic expression is
We split the middle term to obtain:
We factor by grouping to get:
Ans: D. 6x − 5
