Answer:
The square of the scale
Step-by-step explanation:
Scaling
Suppose we know the scale of the distances, for example, r=5. It means that for each centimeter in the drawing, it corresponds to 5 cm in the real object being scaled. If we wanted to find the ratio of the areas, we would need to scale both dimensions and the ratio would be the square of the scale factor. In our example, the ratio of the areas would be 25, i.e. each square centimeter would correspond to 25 square centimeters
The rule for finding the ratio of the areas of two objects: The square of the scale
Answer:
Vertex ( 0,1) and it is maximum.
Step-by-step explanation:
Given : graph of parabola .
To find : What are the coordinates of the vertex of the graph? Is it a maximum or minimum.
Solution : We have given the graph of parabola
Vertex : the highest point ; the top.
Vertex : ( 0 , 1) because it cut at y ,
When the parabola opens down, the vertex is the highest point on the graph is called the maximum, or max.
Therefore, Vertex ( 0,1) and it is maximum.
Answer:
180.5
Step-by-step explanation:
2z=361
z=361/2=180.5
B = {(2, 4), (−1, −7), (5, 6), (4, 3)}
Only A
Only B
Both A and B
Neither A nor B
Answer:
Both A and B
Step-by-step explanation:
A = {(3, −5), (4, 6), (−3, 9), (2, 7)}
-Each x goes to a different y so this is a function
B = {(2, 4), (−1, −7), (5, 6), (4, 3)}
-Each x goes to a different y so this is a function
Both!!
If you look at it, none of the x values are repeating with a differnt outcome, so you know that they both are correct.
Also I just took the quiz c:
Answer:
Step-by-step explanation: Let x represents Sara's age, since Ralph is 3 times as old, the Ralph's age will be 3x.
In 4 years time, Sara will be x+ 4 , Ralph will also be 3x + 4
It was said that Ralph will be as twice as Sara's age in 4 years
⇒ 3x + 4 = 2 ( x+4)
⇒ 3x + 4 = 2x + 8
collecting the like terms
3x - 2x = 8 - 4
x = 4
Since x represents Sara's age, then Sara is 4 years and since Ralph is presently 3 times Sara's age, then Ralph's age is 3 x 4 = 12 years