<span>(x-1)^2
=x^2 - 2x + 1
hope it helps</span>
Option A:
Lateral surface area = 1319 cm²
Solution:
Given image is the cone.
Radius of the cone = 15 cm
Slant height = 28 cm
Value of π = 3.14
<u>To find the lateral surface area of the cone:</u>
Lateral surface area = 
= 1318.8 cm²
Change this to nearest whole unit.
Lateral surface area = 1319 cm²
Hence the lateral surface area of the cone is 1319 cm².
Option A is the correct answer.
3x+22.5 = 69.75
-22.5 -22.5
3x = 47.25
/3 /3
x = 15.75
The price of each shirt before tax is $15.75
It is 19%!! :) an explanation is:
We assume, that the number 2500 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 2500, so we can write it down as 100%=2500.
4. We know, that x% equals 475 of the output value, so we can write it down as x%=475.
5. Now we have two simple equations:
1) 100%=2500
2) x%=475
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=2500/475
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 475 is what percent of 2500
100%/x%=2500/475
(100/x)*x=(2500/475)*x - we multiply both sides of the equation by x
100=5.2631578947368*x - we divide both sides of the equation by (5.2631578947368) to get x
100/5.2631578947368=x
19=x
x=19
now we have:
475 is 19% of 2500
