Answer:
Hello,
Answer C: -40
Step-by-step explanation:
![\displaystyle \sum_{k=1}^4\ (-4k)\\\\=-4*\sum_{k=1}^4\ k\\\\=-4*4*\dfrac{1+4}{2} \\\\=-4*5*2\\\\=-40\\](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csum_%7Bk%3D1%7D%5E4%5C%20%28-4k%29%5C%5C%5C%5C%3D-4%2A%5Csum_%7Bk%3D1%7D%5E4%5C%20k%5C%5C%5C%5C%3D-4%2A4%2A%5Cdfrac%7B1%2B4%7D%7B2%7D%20%5C%5C%5C%5C%3D-4%2A5%2A2%5C%5C%5C%5C%3D-40%5C%5C)
Answer:
49x + 114
Step-by-step explanation:
[ [ fireplace ] x = area of 5
] x + 6
5x
patio = area of 5
+ 49x + 114
5x + 19
(5x + 19) ( x + 6) = 5
+ 19x + 30x + 114
(5
+ 49x + 114) - (5
) = 49x + 114
(area of patio and fireplace) - (area of fireplace) = (area of patio only)
Answer:
9
Step-by-step explanation:
The answer is 44
you subtract 123 minus 79 to get your answer!
.20 is a rational number between -1/4 and 2/5.
It can be part of a ratio.
20:100
A fraction
20/100 or 1/5
I hope this helps!
~cupcake