The ratio of their perimeters is still 7:20. The poster is a rectangle shape. If the length of each side of a poster is proportional to the other by a certain ratio, the sum of the lengths of all sides is also proportional by the same ratio. You can suppose the lengths of four sides of poster A are 7a, 7b, 7c, 7d, so poster B has 20a, 20b, 20c, 20d. (7a+7b+7c+7d)/(20a+20b+20c+20d)=7(a+b+c+d)/20(a+b+c+d)=7/20.
Answer:
The number is -2.
Step-by-step explanation:
From the word problem, we can figure out the equation for the unknown number (x).
8x-3=-19
We would then work out the equation to find x.
Add 3 to -19.
8x=-16
Divide -16 by 8.
x=-2
Answer : 81 because it is the only one that is not a multiple of 4
Step-by-step explanation:
y=3x+5
plug your coordinate points into the equation for slope (left corner or the paper)
multiply by the denominator on both sides of the equation
x-6 cancels out and leaves y-23=3(x-6)
multiply x and -6 by 3
add 23 to both sides to isolate y
hope this helps!
