Timsters333
17.10.2019 •
Mathematics
Assume that two figures on a flat surface, a and b, are similar.
a. if the linear scale factor is 2/5, then what is the ratio of the areas of a and b?
b. if the ratio of the perimeters of a and b is 14: 1, what is the ratio of the areas?
c. if the area of a is 81 times that of b, what is the ratio of the perimeters?
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Ответ:
B 14^2 : 1 = 196:1
C. ratio of perimeters would be sqrt81 = 9 times
Ответ:
3x/8 - 41/5
Step-by-step explanation:
Simplify each term.
3x/8 − 9+4/5
To write −9 as a fraction with a common denominator, multiply by 5/5
3x/8−9 x 5/5 + 4/5
Combine −9 and 5/5
Combine the numerators over the common denominator.
3x/8 + −41/5
Move the negative in front of the fraction
3x/8 - 41/5
Hope this helps you