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Korvikt [17]
3 years ago
6

2 Points

Mathematics
1 answer:
ch4aika [34]3 years ago
5 0
I think the answer is b
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When 1600 is increased by 20% and the resulting number is decreased by y% the answer is 1536. Find the value of y?
svet-max [94.6K]
100% = 1600
120% = 1920

1920/120 = 1536/y
1920y = <span>184320 (cross multiply)
y = 96%
decrease of 24% from 1920</span>
7 0
3 years ago
The sum of three numbers is 3. if the second number is subtracted from the sum of the first and third numbers, the result is 9.
Margaret [11]
Let the three numbers be x, y, and z.

If the sum of the three numbers is 3, then x+y+z=3

If subtracting the second number from the sum of the first and third numbers gives 9, then x+z-y=9

If subtracting the third number from the sum of the first and second numbers gives -5, then x+y-z=-5

This forms the system of equations:
[1] x+y+z=3
[2] x-y+z=9
[3] x+y-z=-5

First, to find y, let's take do [1]-[2]:
x+y+z=3
-x+y-z=-9
2y=-6
y=-3

Then, to find z, let's do [1]-[3]:
x+y+z=3
-x+-y+z=5
2z=8
z=4

Now that you have y and z, plug them into [1] to find x:
x+y+z=3
x-3+4=3
x=2

So the three numbers are 2,-3, and 4.


5 0
3 years ago
The roller on a computer printer makes 2200 revolutions per minute. what is its angular velocity?
-Dominant- [34]
(2200 rev/min) x (360 deg/rev) x ( min/60 sec) = 13,200 degrees per second

(2200 rev/min) x (2 pi radians/rev) x (min / 60 sec) = <u>73 and 1/3 pi</u> radians/sec
8 0
3 years ago
Ok guys I would love to show you a pic of this but can't stupid phone not enough storage i deleted like a ton of stuff but I nee
Leokris [45]
I would think that this would be an example of what you are looking for. By the way, you are so pretty! :) Sorry if I am wrong, I will try again if you don't think it is right. 


8 0
3 years ago
Need help ASAP AND SHOW WORK PLEASE !! 40 points
Vinvika [58]
Area = 20
perimeter = 21

5 0
3 years ago
Read 2 more answers
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