The answer would be 7-x=x
Answer:
1. 7,700 grams 2. 420,000 milligrams or 420 grams
Answer:
-1/6
Step-by-step explanation:
Slope=change in y/change in x
Y-values: 8 and -4
X-values: 4 and 2
Change is the difference in position (subtract)
8- (-4)/(4-2)=12/2=6 = first slope
Perpendicular lines have opposite reciprocal slope
Answer:
13.12 percentage of tax
Step-by-step explanation:
411.35-380 is 31.35 dollars in tax
411.35 divided by 31.35 is 13.12
Answer:
The length is 9 units
Step-by-step explanation:
Let x = length
width = x-3
Area = 54 = l*w
54 = x * (x-3)
Distribute
54 = x^2 -3x
Subtract 54 from each side
54-54 = x^2 -3x-54
0 = x^2 -3x-54
Factor
What 2 number multiply to -54 and add to -3
-9 * 6 =54
-9+6 =-3
(x-9) (x+6) =0
Using the zero product property
x=9 x=-6
Since we cannot have negative length
x=9 units
The length is 9 units
