-5n + 8 = -7
-5n + 8 - 8 = -7 -8
-5n = -15
-5n/-5 = -15/-5
n = 3
Answer:
0.0001
Step-by-step explanation:
The value of the number is 0.0001. That presentation meets the format requirements for your literal.
Answer:
B, C, D
Step-by-step explanation:
Given expression
Note that
Use distributive property:
Thus, choice B is true.
Rewrite given expression in following way:
Thus, choice C is true.
Rewrite given expression in following way:
Thus, choice D is true.
Answer:
length = 60 foot, width = 30 foot
Step-by-step explanation:
Area of rectangular part, A = 1800 ft²
Cost of fencing three sides is $ 6 per foot and cost of one side fencing is $18 per foot.
Let the length of the rectangle is l and the width of the rectangle is W.
Area = Length x width
A = L x W
1800 = L x W ...... (1)
Total cost of fencing, C = 6 x ( L + W + L) + 18 x W
C = 6 (2L + W) + 18 W
C = 12 L + 24 W
Substitute the value of W from equation (1), in equation (2)
Differentiate both sides with respect to L:
Put it equal to zero for maxima and minima
L = 60 foot
and W = 30 foot
So, the costing is minimum for length = 60 foot and the width = 30 foot.
Okay, to find the area, the formula is length times width. So you would multiply the two expressions together. It will look something like this:
The answer would be:
4x^6+12x^5+8x^4
Let me know if you need further explanation. I hope this helps.