Answer:
0
Step-by-step explanation:
sin(cos(pi/2))
Each wall measures 12 ft * 14 ft.
Area of one wall = LW = 12 ft * 14 ft = 168 ft^2
Area of 3 walls = 3 * area of 1 wall = 3 * 168 ft^2 = 504 ft^2
One roll of wall paper covers 42 ft^2.
To find out how many rolls are needed,
divide the total area by the area of one roll.
(504 ft^2)/(42 ft^2) = 12
Answer: Shae should purchase 12 rolls.
In an algebra problem, you don't set the answer-goal and say "Go for it!"
There is only one correct answer, so the only appropriate way to go about it is to say "Here is the equation. Find the solution.?"
Maybe 27 is the solution, and maybe it's not.
We're about to find out.
You said 2/3 x - 7 = 11
Add 7 to each side: 2/3 x = 18
Divide each side by 2 : 1/3 x = 9
Multiply each side by 3 : x = 27 .
So yes, the correct solution is 27. And that's how to find it.
Answer:AC = 20
BK = 9.6
Step-by-step explanation:
AC is found using the Pythagorean theorem in the usual way:
AC² = AB² + BC²
AC² = 12² + 16² = 144 +256 = 400
AC = √400
AC = 20
You may recognize this is a 3-4-5 triangle scaled by a factor of 4.
__
Then BK is found using similar triangles. All of the triangles in the figure are similar*, so ...
long side / hypotenuse = BC/AC = BK/AB
BK = AB(BC/AC) = 12(16/20) = 12×0.8
BK = 9.6
the answer is $87,850 to 4183,250