1)4x+14
2)x+9
3)x+21
4)x+15
5)9x+2
6)4x+26y
Answer:
8x-2
Step-by-step explanation:
perimeter=2l+2w
perimeter= 2(2x+3)+2(2x-4)
=4x+6+4x-8
=8x-2
Answer:
6/5
Step-by-step explanation:
hope this helps :)
Answer:
64
Step-by-step explanation:
-7√5
rewrite 20 as 2^2·5
factor 4 out of 20. negative ∛4(5)-√5
rewrite 4 and 2^2 negative ∛2^2·5-√5
pull terms out from under the radical
-3(2√5)√5
multiply 2 by -3
-6√5-√5
subtract √5 from -6√5
-7√5
the answer is -7√5
