The factored form of this equation is (n+5)(n-5). Hope this helps you.
Answer:
Answer: 9
Step-by-step explanation:
There are two ways to do that:
1.)
72 ÷ 8 = 9
w = 9
2.)
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
8 x 6 = 48
8 x 7 = 56
8 x 8 = 64
<u>8 x 9 = 72</u>
Price before tip "b" of Kia’s dinner is $ 35
<h3><u>Solution:</u></h3>
Given that kia dinner bill is $ 40.25 which inclused a 15% tip
To find: price before tip "b" of Kia’s dinner
Let us first find the tip amount paid by Kia
Let "b" be the dinner bill before tip
Given that dinner bill is $ 40.25 which inclused a 15% tip
So, 15 % of "b" is the tip amount paid
tip amount paid = 15 % of "b"
![\text {tip amount paid }=15 \% \times b](https://tex.z-dn.net/?f=%5Ctext%20%7Btip%20amount%20paid%20%7D%3D15%20%5C%25%20%5Ctimes%20b)
![\text {tip amount paid }=\frac{15}{100} \times b=0.15 b](https://tex.z-dn.net/?f=%5Ctext%20%7Btip%20amount%20paid%20%7D%3D%5Cfrac%7B15%7D%7B100%7D%20%5Ctimes%20b%3D0.15%20b)
Now we can say,
<em>Dinner bill including tip = dinner bill before tip + tip paid</em>
$ 40.25 = b + 0.15b
40.25 = 1.15b
b = 35
Thus price before tip "b" of Kia’s dinner is $ 35
Increasing by N% means the new value is 1+N/100 as much as the old value. So, we have
new = old*(1+1)(1+1.5) = 5.00 * old
so, old = new/5 or 20%