The number of disintegrations per minute (dsm) of a sample of iodine-133 is measured at 5.5 x 102 dsm. When the sample is measured 295 minutes later, the number of disintegrations has decreased to 4.7 x 102 dsm. What is the half-life of iodine-133

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.

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step-by-step explanation: