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DENIUS [597]
3 years ago
10

Brian bought a computer

Mathematics
1 answer:
prisoha [69]3 years ago
4 0

Answer:

Step-by-step explanation:

100(133-380)/380=-65%

So the discount was 65%

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The Hoover Dam in the U.S produces 2 x 10 ^9 Watts of electricity and is composed of 7 x 10^9 kg of concrete. Concrete requires
kondaur [170]

Answer:

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Step-by-step explanation:

1) First of all we use 1MJ=1x10^{6}J so the total energy will be 7x10^{9} kg * 1x10^{6} \frac{J}{kg} =7x10^{15}J.

2)Then we use 1W=1\frac{J}{s} and Time=\frac{7 x 10^{15} J }{2x10^{9}J/s} =3.5x10^{6}s or 3.5x10^{6}s*\frac{1h}{3600s}*\frac{1day}{24h} =40.5 days

4 0
3 years ago
The arithmetic mean of the monthly salary of two employees is $3210. One employee earns $3470 per month. What is the monthly sal
Serggg [28]
2950 is the salary of the other employee
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3 0
4 years ago
Find the value of 'm' if (-m,2) is a solution of equation 4x+9y-6=0
3241004551 [841]
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5 0
3 years ago
A 1 16 -3<br> b 2 16 3<br> c 1 12 -3<br> d 1 -16 -2
Scilla [17]

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Step-by-step explanation:

3 0
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