Answer:
The correct option is 1 and 4 are correct.
Step-by-step explanation:
The dilation is the enlargement and comparison of a figure according to the scale factor from the given center of dilation.
The rule DO,2(x,y)(2x,2y) express the dilation with factor 2 and the center of dilation is origin. It shows the enlargement of the triangle. The sides of image is twice of the preimage.
In dilation the corresponding angles remains same and the corresponding sides are equal.
Therefore option 1 and 4 are correct.
Answer:A
1/48 = 102/ ???
1 × 102 = 102
48 × 102 = 4896 mm, or 4.896 m
B
1 inch = 25.4 mm
1/48 = 1 and one fourth in/54 in
54 ÷ 1 1/4 = 43
43 ≠ 48
The train can't drive on the tracks.
Step-by-step explanation:
It has been given that exactly 0.1 of the radioactive nuclei in a sample decay each hour. Thus, after n hours, the fraction of nuclei is given by the model expression: .
Now, to find the value of n equal to one half-life, all that we need to do is to equate the above expression to half or 0.500 (to the indicated places of decimal) and solve for n.
Thus, we will get:
Taking the log to the base 10 on both sides, we get: (Please note that we can take the log to any base)
Dividing both sides by log(0.900), we get:
hours
Therefore the value of n equal to one half-life is 6.579 hours.
Answer:
2 1/2
Step-by-step explanation:
5/8 divided by 1/4 is 2 1/2