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enyata [817]
3 years ago
10

How do you get the answer to this problem? (2^3)(2^-7)

Mathematics
1 answer:
postnew [5]3 years ago
7 0
(2^3)=2*2*2=8
(2^-7)=1/2*1/2*1/2*1/2*1/2*1/2*1/2=1/128
8*1/128=1/16=.0625
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Inga [223]

In the Triangle ABD, Using Pythagoras theorem we can write

AB^2=BD^2+AD^2\\ \\ AB^2=9^2+y^2\\ \\ AB^2=81+y^2\\ \\

In the Triangle ACD using Pythagoras Theorem

AC^2=AD^2+CD^2\\ \\ AC^2=y^2+7^2\\ \\ AC^2=y^2+49\\

Now in the larger Triangle ABC, we can write

AB^2+AC^2=BC^2

Now substitute the values from the above equations we get

81+y^2+49+y^2=(9+7)^2\\ \\ 130+2y^2=16^2\\ \\ 130+2y^2=256\\ \\ 65+y^2=128\\ \\ y^2=128-65=63\\ \\ y=\sqrt{63} =3\sqrt{7} \\

3 0
3 years ago
Mario and his crew are headed to the beach. They start with 1500 coins and plan to spend 60 coins on one umbrella for the trip a
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Answer:

they have been on vacation for 2 days i think

Step-by-step explanation:

1500-60=1440

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hope this helps

8 0
3 years ago
Find the number. Round to the nearest tenth if necessary. 20% of 65 is what?
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3 years ago
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