<span>We can determine, a 30/25/15 series trade discount would be calculated as follows:
let X = retail price.
X - 0.30 </span>× X = Y ⇒ first discounted price.
<span>
Y - 0.25 </span>× Y = Z ⇒ second discounted price.
<span>
Z - 0.15*Z = T </span>⇒ total discounted price.
<span>
X - 0.30 </span>× X = (1 - 0.30) × X = 0.70 × X = Y
<span>
Y - 0.25 </span>× Y = (1 - 0.25) × Y = 0.75 × Y = Z
<span>
Z - 0.15 </span>× Z = (1 - 0.15) × Z = 0.85 × Z = T
<span>
since Z = 0.85 </span>× Y, then 0.85 × Z = 0.85 × 0.75 × Y
<span>
since Y = 0.70 </span>× X, then 0.85 × Z = 0.85 × 0.75 × 0.70 × X
<span>
based on the above, then T = total discount
= 0.85 </span>× 0.75 × 0.70 × X
= 0.44625X<span>
30/25/15 series discount is equivalent to a total discount of 44.625%
</span>
Hello :
<span>Factor completely. a^2 - 25b^2 :
a²-25b²=a²-(5b)² = (a-5b)(a+5b)</span>
Set y = 0 for the X intercept and x = 0 for the y intercept
Answer:
2 5/8
Step-by-step explanation:
simple met... I mean math :)
Answer:
Step-by-step explanation:
It'd be wise to say what is represented by each x and y. I will assume that x represents the age of the child in months and y the height in cm.
Then, if the height is 115 cm, 115 cm = 0.58x + 72.27. Must solve this for x:
115 cm - 72.27 cm
x = ---------------------------- = 73.7 cm (about 29 inches, which is reasonable)
0.58
If the child is 30 months old, x = 30 and y (the height) is
0.58(30) + 72.27 cm = 89.7 cm (about 35.3 cm, also reasonable)
