Let's say the item starts off at $100.
A 55% decrease means 100%-55% = 45% of the value is still there. The item is now worth 0.45*100 = 45 dollars.
Now increase this by 25%. The long way to do this is to add 25% of 45 onto 45
(25% of 45) + (45) = 0.25*45+45 = 11.25+45 = 56.25
Or, we can multiply 45 by 1.25 since the multiplier 1.25 represents a 25% increase
1.25*45 = 56.25
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The item was $100, it drops to $45 after the 55% decrease, then it is $56.25 after the 25% increase.
Let's compute the percent difference
A = 100 = old value
B = 56.25 = new value
C = percent difference
C = 100*(B-A)/A
C = 100*(56.25-100)/100
C = -43.75%
The negative C value indicates a percent decrease.
So combining a 55% decrease and a 25% increase leads to an overall decrease of 43.75%
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A shortcut is to multiply 0.45 and 1.25 to get 0.5625
Then subtract this from 1 to get 1-0.5625 = 0.4375
This is another way to see we have a 43.75% decrease.
Answer:
-42
Step-by-step explanation:
2^3+(2-10)-42
8+(-8)-42
0-42
= -42
Answer: 45.6
Step-by-step explanation:
I just took the test and got it wrong but that's what it said the right answer was!
Distance = sqrt (x2 - x1)^2 + (y2 - y1)^2
(-2,8)....x1 = -2 and y1 = 8
(11,2)...x2 = 11 and y2 = 2
now sub
d = sqrt (11 - (-2)^2 + (2 - 8)^2
d = sqrt (13)^2 + (-6^2)
d = sqrt (169 + 36)
d = sqrt 205
d = 14.317...rounds to 14.32 <==