Answer: C.
Step-by-step explanation:
If the figure gets rotated 270ᴼ, then all of the transformed sides are perpendicular to the sides of the original figure.
The slope of DE is 2/4 (2 units up, 4 units over) or 1/2. If D’E’ is perpendicular to DE, then the slopes have negative reciprocals.
DE’s slope: 1/2
D’E’ slope: -2/1 or -2 (down 2, over 1)
Answer : The total number of fossils at the museum are, 25
Step-by-step explanation :
As we are given that 60% of a museum’s fossils are from the Jurassic Period.
Let the total number of fossils at the museum be, 'x'
Given:
Number of fossils from the Jurassic period = 15
The % of a museum’s fossils are from the Jurassic Period = 60%
Thus, the expression will be:

By solving the term 'x' we get:


Thus, the total number of fossils at the museum are, 25
Answer:numbers
Step-by-step explanation:
numbrres and letters
Answer:
Step-by-step explanationf: