Answer:
1) $343
2) $40
Step-by-step explanation:
1) Kathy paid (100 - 30)% of 490
so we can multiply 490 by 70%
490 x .7 = 343
2) let 'x' = original price
if she's saving 10% (or .10) then she's paying 90% (or .90)
.9x = 36
x = 36/.9
x = 40
Answer:
Thus, option A is correct.
Explanation:
<u>match the proportions</u>
<u>set up a equation:</u>
Y^3=x and 3y=x^2 is nonlinear
the others are linear
From question, we have,
x + (x + 4) + (x + 4 + 4) + (x + 4 + 4 + 4) + (x + 4 + 4 + 4 + 4) + (x + 4 + 4 + 4 + 4 + 4) + (x + 4 + 4 + 4 + 4 + 4 + 4) = 182
=> x + x + 4 + x + 8 + x + 12 + x + 16 + x + 20 + x + 24 = 182
=> 7x + 84 = 182
=> 7x = 182 - 84
=> x = 98/7
=> x = 14
hence the length of the side labelled x = 14 cm
