Answer:
-69x-66
Step-by-step explanation:
1) given: a₁=-4x-1; a₂=-9x-6; a₃=-14x-11. Find: a₁₄-?
2) a₁₄=a₁+13d, where d - the difference between neighbor-terms;
3) d=a₂-a₁; ⇔ d= -9x-6+4x+1= -5x-5;
4) a₁₄= -4x-1+13*(-5x-5)= -69x-66.
Percentages can be used for discounts in shops - 50% off cookies
For bank interest rates - 2.78% p.a.
Sales tax - $50 coffee maker and the sales tax is 8%
Answer:
last one
Step-by-step explanation:
Answer:
I believe it would be the last option
Step-by-step explanation:
It would be smaller since it is being reduced by 1/2, and if you turn your computer 180 degrees, it would be the shape of the last figure. Hope this helps!
The answer is: the average height is

, the median height is r-2.
r - Ray's height
l - Lin's height
s - Sam's height
<span>Ray is 2 inch taller than Lin: r = l + 2 </span>⇒ l = r - 2
Ray is 3 inch taller than Sam: r = s + 3 ⇒ s = r - 3<span>
</span><span>The average is the sum of all values divided by the number of values:
</span>

<span>
Since </span>l = r - 2 and s = r - 3, then:

<span>The median means the middle value. Let's first rearrange values so we can find the middle one:
</span>Ray is taller than Lin and Sam, so Ray is the tallest.
Sam is much shorter than Ray comparing to Lin, so Sam is the shortest.
Therefore, values are from the lowest to the highest:
(s, l, r)
⇒ (r-3,
r-2, r)
Median of these values is in the middle, so the median height is r-2.