Easy, use these two formulas, to find Markdown:
Markdown=Original-New
and
Markdown%=

So, plug in what you know.
Markdown= $30-$20.10
M=$9.90
Now, Markdown%
Markdown%=

M%=0.33*100
M%=33
Thus, there was a 33% markdown.
Since a stop sign is an octagon it has eight sides. So the perimeter will be:
p=8x, p=perimeter and x=side length. We are told that the perimeter is equal to:
16x^2-80x so we can say:
16x^2-80x=8x subtract 8x from both sides
16x^2-88x=0 factor out 8x
8x(2x-11), since we know x>0
x=11/2
x=5.5 units
Answer:
C. 20:16
Step-by-step explanation:
For this question, you have to multiply any integers to make it as ratio that on the answer choices. When you multiply 1 on 5:4, it will be 5:4. If you multiply by 2, it would be 10:8. When you continue to multiply, when you multiply by 4, you get 20:16 which is answer choice C.
Answer:
d
Step-by-step explanation:
-1*-2=2
2*5=10
Hope this helps!!!
Answer:
E
E is the only one that ends with 70 and is also all multiples of 6.