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Mathematics, 18.10.2020 02:01 kimloveswim
Molly wants to put a fence around an area. The fence will follow the diagram of the triangle shown below.
About how much fencing does Molly need?
A. 28 ft
B. 38 ft
C. 43 ft
D. 49 ft
![ansver](/tpl/images/cats/User.png)
Answers: 2
![ansver](/tpl/images/cats/User.png)
Answer from: Quest
false
step-by-step explanation:
![ansver](/tpl/images/cats/User.png)
Answer from: Quest
the largest number of the four options is 1.8 x 10-2
you have it in scientific notation.
1.80 x 10-6 = 0.00000180
1.80 x 10-4 = 0.000180 (bigger, or "less small", than the former one)
so
1.8 x 10-2 = 0.0180. as you see. the "less small", or the biggest one of them all.
as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).
if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:
1.8 x (10)2 = 180
so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.
![ansver](/tpl/images/cats/User.png)
Answer from: Quest
31/6= 19/6 19/6 *1/7=19/42
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