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Agata [3.3K]
3 years ago
11

At an electronics store, a plasma television is on sale fore 25% off. The sale price is $630. What is the original price of the

television?
Mathematics
2 answers:
alexgriva [62]3 years ago
8 0

Answer:

is there a picture to express the question

vaieri [72.5K]3 years ago
5 0

Answer:

$840

Step-by-step explanation:

630/0.75 = 840

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8.23x10^6 -7.39x10^6
Vladimir79 [104]

Answer:

840,000

Step-by-step explanation:

8.23x10^6=8230000

7.39x10^6=7390000

soo

8230000-

7390000

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 _840000

7 0
3 years ago
What's the area of the green highlighted face shown below??
GrogVix [38]

Answer:

45.5 ft sqaured

Step-by-step explanation:

5 0
3 years ago
What is 5 3/8 as a inproper fracon and as a mixed number
ICE Princess25 [194]

\frac{53}{8}
To divide 53 by 8 wont be possible so u find a number that when you multiply by 8 it gives u a number closer to 58 which is 8*6=48 i.e 53 divided by 8 is 6 rem, then to get the reminder you subtract 42 from 53 i.e 53–48=5 so the final answer will be 6 and 5/6
3 0
3 years ago
What is the angle of rotation about the center that will map the regular pentagon onto itself
Andrew [12]

The answer is 180 degrees. The rotation that maps one side to an adjacent side is 360°/6 = 60°. This is the least rotation that plots the regular hexagon to the aforementioned. In the least whole number of these minimum rotations, such as three 60° rotations to make 180°, will retain the hexagon identical.

5 0
3 years ago
Read 2 more answers
Find constants a and b such that the function y = a sin(x) + b cos(x) satisfies the differential equation y'' + y' − 7y = sin(x)
Elza [17]
The first thing we must do in this case is find the derivatives:
 y = a sin (x) + b cos (x)
 y '= a cos (x) - b sin (x)
 y '' = -a sin (x) - b cos (x)
 Substituting the values:
 (-a sin (x) - b cos (x)) + (a cos (x) - b sin (x)) - 7 (a sin (x) + b cos (x)) = sin (x)
 We rewrite:
 (-a sin (x) - b cos (x)) + (a cos (x) - b sin (x)) - 7 (a sin (x) + b cos (x)) = sin (x)
 sin (x) * (- a-b-7a) + cos (x) * (- b + a-7b) = sin (x)
 sin (x) * (- b-8a) + cos (x) * (a-8b) = sin (x)
 From here we get the system:
 -b-8a = 1
 a-8b = 0
 Whose solution is:
 a = -8 / 65
 b = -1 / 65
 Answer:
 
constants a and b are:
 
a = -8 / 65
 
b = -1 / 65
4 0
3 years ago
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