Answer: yes, she did made an error, a very big mistake.
Step-by-step explanation:
first, we have varieties of ways in which we can use to solve this, the most important thing is to stick to the mathematical rules of solving any equations.
using the most simpler method
-4x + 11 = 6x + 1
collect like ter
-4x -6x = 1 - 11
-10x = -10
divide bothside by -10
-10x/-10 = -10/-10
x=1
secondly, using the method she is intending to use, its more easier to subtract 6x from bothside
-4x + 11 = 6x +1
-6x -6x
_______________
-10x + 11 = 1
-10x = 1-11
-10x = -10
x = 1
or still we can doing it exactly as she did, but it will take us through a long way i.e by adding +6
-4x + 11 = 6x + 1
+6x +6x
_______________
2x +11 = 12x +1
2x-12x = 1-11
-10x=-10
x=1
The diameter of the tank = 9 feet
So radius is = 
feet
Height of the tank = 25 feet
The top of the tank must be circular with same radius as 4.5 feet
So, to calculate the area of the tank and top, we will add the curved or lateral surface area of tank and area of circle
Curved or lateral Surface area of cylindrical area = 2*PI*r*h
= 
= 706.50 square feet
And area of the circular top = PI*r²
= 
= 63.585 square feet
So, total area that will be painted = 
= 770.085 square feet
Or rounding up to 2 decimal places = 770.09 square feet.
Answer:-1
Step-by-step explanation:
I got it wrong and it said that that is the right answer
76 over 3 is the same thing as 76 divided by 3. I like to use long division to do it. The quotient will be the whole number, the remainder will be the numerator, and 3 is till the denominator.
The answer is 25 1/3.(25 is the whole number)
