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04.12.2019 •
Mathematics
Asquare pyramid has a base area of 36ft2 the pyramids total surface area is 144ft2 what is the area of each triangular face?
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Ответ:
surface area of pyhraid=base+4 triangles
surface area=144
baswe=36
subsitute
144=36+4 times triangles
subtract 36 from both sides
108=4 triggles
divide by 4
27=trignels
the area of 1 triangle is 27 ft^2
Ответ:
x−3y=−2
Step 1: Add 3y to both sides.
x−3y+3y=−2+3y
x=3y−2
x=3y−2
Let's solve for x.
x+3y=16
Step 1: Add -3y to both sides.
x+3y+−3y=16+−3y
x=−3y+16
x=16+3y
The other ones I'm not so sure