- 3x³y(x - 3y) - 7x²y² (x - 3y)
- = (x - 3y)(3x³y - 7x²y²)
- = (x - 3y)[x²y(3x - 7)]
- = x²y(3x - 7)(x - 3y)
<u>Answer:</u>
<u>x²y(3x - 7)(x - 3y)</u>
Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
x = 75°
Reason:
m∠EFG and m∠ABC are supplementary angles
set them equal to each other
x²+1=x+1
minus 1 from both sides
x²=x
minus x both sides
x²-x=0
factor
x(x-1)=0
set each to 0
x=0
x-1=0
x=1
subsitute back to find y values
y=x+1, y=0+1, y=1, one point is (0,1)
y=x+1, y=1+1, y=2, another point is (1,2)
the 2 points of intersection are (0,1) and (1,2)
Use the formula for the surface area of a right cone:

Where 'r' is the radius and 's' is the slant height, plug in what we know(use 3.14 to approximate for pi):

Multiply and simplify exponent:

Multiply:

Add, round to the nearest whole number: