1/4 of 1 minute would be 1/4 * 60(seconds in a minute)
so that would be 60/4=15 seconds.
Answer:
use the formula of (a+b)^2
check out the picture
Step-by-step explanation:
Let the width be "x" cm.
Then the length is "x+12" cm
And the area = x(x+12) = x^2+12x cm^2
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Change the dimensions:
width = "x-2" cm
length = "x+10" cm
New area = (x-2)(x+10) = x^2 + 8x - 20 cm^2
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Equations :
Old area - New area = 108 cm^2
x^2+12x -(x^2 + 8x - 20) = 108
4x + 20 = 108
4x = 88
x = 22 cm (original width)
x+12 = 24 cm (original length)
Answer:
Step-by-step explanation:
the first step is subtractiong 6 from each side
y+6=52
y+6-6=52-6
y=46
9514 1404 393
Answer:
A. 120%
B. 150%
Step-by-step explanation:
a. Let 'a' represent the percentage of interest.
600 = a% × 500
600/500 = a/100 . . . . . . . % means /100
100(6/5) = a = 120
600 is <u> 120 </u>% of 500
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b. Let 'b' represent the percentage of interest. The given statement means ...
100 = 40 + b% × 40
100 = 40(1 +b/100) . . . . . factor out 40, use /100 for %
2.50 = 1 +b/100 . . . . . . . divide by 40
1.50 = b/100 . . . . . . . . . . subtract 1
150 = b . . . . . . . . . . . . . . multiply by 100
100 is <u> 150 </u>% more than 40
