Answer:
Your answer is <u>B.</u><u> </u><u>4</u><u>.</u><u>5</u><u>0</u><u>r</u><u> </u><u>+</u><u> </u><u>1</u><u>2</u><u>.</u><u>5</u><u>0</u><u> </u><u>=</u><u> </u><u>7</u><u>1</u><u>.</u>
Given that:

- we cross multiply as follows:

- we divide both sides by G, as follows:


- Subtract 1 from both sides of the equation:


- multiply both sides of the equation by -1, as follows:


Therefore, we have that:

or:
The period of | sin (3x) | is <span>C. pi / 3.</span>
Answer:
Step-by-step explanation:
e number 45810 contains the combination "58"; the numbers 45180 and 48510 do not contain the combination "58" How many 5-digit numbers (between 10 000 and 100 000) contain the combination "58"?
<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>