For this case, the first thing we must do is find the scale factor.
For this, we use one of the dimensions. We will use the width of the photo.
We have then:

Then, we look for the value of the height of the new photo. To do this, we multiply the scale factor by the original dimension.
We have then:

Answer:
the new height will be:
d.168 inches
Let n be one side of the square wood block. Then:
n²=872
n=√872=approx. 30" per side
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Answer:
find the LCM of denominators and multiply the last answers of LCM for example take 1/3 and 1/2 it's LCM is 6
1/3 = 1×2/3×2 = 2/6
1/2 = 1×3/2×3 = 3/6
then subtract 3-2/6 = 1/6 this is subtraction
instead of subtracting just add it