Answer:

Step-by-step explanation:
Apply exponent rule:
![\sqrt[n]{a} =a^{\frac{1}{n}}](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7Ba%7D%20%3Da%5E%7B%5Cfrac%7B1%7D%7Bn%7D%7D)
![\implies \sqrt[11]{12}=12^{\frac{1}{11}}](https://tex.z-dn.net/?f=%5Cimplies%20%5Csqrt%5B11%5D%7B12%7D%3D12%5E%7B%5Cfrac%7B1%7D%7B11%7D%7D)


500,000 round up from 491,852 to 500,000
5) n - 5 <u>></u> -2
<u> + 5 +5</u>
n <u>></u> 3
6) 3 + x < 7
<u> -3 -3</u>
x < 7
7) -7y <u><</u> 14
<u> ÷ -7 ÷ -7
</u> y <u> <</u> -2<u>
</u>8) b/5 > -1
<u>× 5 × 5</u>
b > -5
<u />
Answer:
See below
Step-by-step explanation:
is the average
is the variance
is the standard deviation

L x W = 105
L + W = 26 so L = 26 - W
substitute L = 26 - W into L x W = 105
(26 - W) x W = 105
26W - W^2 = 105
W^2 - 26W + 105 = 0
(W - 21)(W - 5) = 0
W - 21 = 0; W = 21
W - 5 = 0; W = 5
The the dimensions of the rectangle are 5 ft and 21 ft.
Double check:
The sum of the length and the width is 26 feet: 21 + 5 = 26 feet
A rectangle has an area of 105 square feet: 21 x 5 = 105 square feet