The mistake is
3/5/5/3 =-3/5 this is the mistake
but the answer is
3/5/5/3=3/5×3/5=9/25
Answer:
x=-6.5
Step-by-step explanation:

Answer: D.
Biologists attempt to answer questions about the living world.
Step-by-step explanation:
A biologist is a scientist devoted to and producing results in biology through the study of life. Therefor, Biologists would usually attempt to answer questions about the living world.
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If he runs for 21 hours per week, how many hours does he run per day? There are 7 days in a week, so this would be 21/7. Then if he doesn't run for three days, you need to multiply this by 3.
A reflection over the x-axis only change the signal of the coordinate y of the point. Hence, the coordinates of vertex B' are:

.