You have to subtract 23.75 from 42.50 to get your answer of 18.75
The answer would be x^2-18x+81. This can be found be writing "(x-9)^2" twice, and distributing. Combine like terms, and you should get this answer.
Answer:
Maggie bought 77 pencil sharpeners
$46.20 divided by .60 = 77
Step-by-step explanation:
Answer:
hints to solve each. partial answer due to lack of time, hope it helps!
Step-by-step explanation:
1)
a) solve ():
5 
+ 7 - 9 - 6 + 12 - 10 =
. (5 +7-9-6+12-10)
b) use 
= 
c) use 
= 
= 2
use 
= = 2
2)
a) use 
= 
use = 
= 2
a). (17º-17'-17") = 17<span><span>º + 17'/60 + 17"/3600 = </span>17.288055...</span><span>º
</span>17.288055...º / 4 = 4.322...º = <em>4</em><span><em>º - 19' - 19.25" </em><em /></span><span><== <span>a resposta</span>
b) (18º: 8 + 23º: 4 - 8º)
18</span><span>º / 8 = 2.25</span><span>º
23</span><span><span>º / 4 = </span> 5.75</span><span>º
(2.25</span><span>º + 5.75</span><span><span>º </span>- 8º) = <em>0</em></span> <== a resposta
