Answer:
It originally costs $44
Step-by-step explanation:
To find the original price, first we add the $10 back on to the price.
$23 + $10 = $33
Now that we have this, we need to find out how much it was before the markdown. Since she paid 75% of the original price (25% less than the original), we can divide by that percentage.
$33/75% = $44
(x - a)^2 + (y - b)^2 = (y - d)^2
<span>x^2 - 2ax + a^2 + y^2 - 2by + b^2 = y^2 - 2dy + d^2 </span>
<span>Subtract y^2 from both sides... </span>
<span>x^2 - 2ax + a^2 - 2by + b^2 = -2dy + d^2 </span>
<span>Now I would just substitute in the the values (a = -4, b = 17/8, d = 15/8)... </span>
<span>x^2 - 2(-4)x + (-4)^2 - 2(17/8)y + (17/8)^2 = -2(15/8)y + (15/8)^2 </span>
<span>Simplify... </span>
<span>x^2 + 8x + 16 - (17/4)y + 289/64 = -(15/4)y + 225/64 </span>
<span>Add (17/4)y to both sides... </span>
<span>x^2 + 8x + 16 + 289/64 = (2/4)y + 225/64 </span>
<span>x^2 + 8x + 16 + 289/64 = (1/2)y + 225/64 </span>
<span>Subtract 225/64 from both sides... </span>
<span>x^2 + 8x + 16 + 1 = (1/2)y </span>
<span>x^2 + 8x + 17 = (1/2)y </span>
<span>Multiply both sides by 2... </span>
<span>2x^2 + 16x + 34 = y </span>
<span>...which is equal to equation D.</span>
Yes, the statement is correct. Since 2 x 3 = 6, we can divide 6 by 3 to get 2 or by 2 to get 3.
Answer:
<em>t = -1.1</em>
Step-by-step explanation:
3.1 - 1.3 = t + 2.9
1.8 = t + 2.9
-1.1 = t
t = -1.1
