Step-by-step explanation:
8²+x²=17²
74+ײ=289
x²=225
Sq root both sides
x=15
15×8=120 Sq ft
We are comparing areas, so square of the linear dimension
Relative cost per unit area
12^2/6=24
16^2/10=256/10=25.6
Since 24<25.6, the 12" pizza is a better deal.
Note: we could compare exact area by calculating A=pi (d^2)/4, but since it is a relative comparison, the result will be the same, albeit more work.
Answer:
(A) 3x + z +9
Step-by-step explanation:
1) 8x -8y +9
<u> </u><u>- </u><u>( 5x -8y -z )</u>
<u />
<u>2)</u> 8x -8y +9
<u> - 5x +8y +z </u>
3x +z +9
5/9 you just have to multiply 2/3 by 5/6
The circumference c of a circle with radius r is:
The total length of paper required to cover two cans is given by: