Answer:
25 times
Step-by-step explanation:
Scale factor is the ratio of dimensions of the image and the preimage.
Scale factor =
Since area of a figure is the square of dimensions.
Area = Length × Width
Therefore, area scale factor will be the ratio of square of the dimensions of image and preimage.
Area scale factor =
= (Scale factor)²
= 5²
= 25
Therefore, area of the image will be 25 times the area of the preimage.
Answer:
A track star in Arizona running time in the last meet was 11.5 seconds.
Step-by-step explanation:
Given:
average time for all six meets = 11.8 seconds.
Time for 1st meet = 11.7 seconds.
Time for 2nd meet = 11.6 seconds.
Time for 3rd meet = 12 seconds.
Time for 4th meet = 12.1 seconds.
Time for 5th meet = 11.9 seconds.
We need to find the running time for her last meet.
Solution:
Let the running time for her last meet be 'x'.
So we can say that;
average time for all six meets is equal to sum of Time for 1st meet, Time for 2nd meet, Time for 3rd meet,Time for 4th meet, Time for 5th meet and time for her last meet and then divided by 6.
framing in equation form we get;
Now Multiplying both side by 6 we get;
Now Subtracting both side by 59.3 we get;
Hence A track star in Arizona running time in the last meet was 11.5 seconds.