According to this chart, the area of a circle with a diameter of <span>2.2 m is
area=(pi)(r)^2=</span><span><span>(pi)(d/2)^2</span>
= (pi)(2.2/2)^2
= 1.21 (pi) m^2</span>
Answer:
$3,075
Step-by-step explanation:
Given, for a triangular sail (assuming its a right triangle)
base dimension = 15 feet
height = 20 feet
Area of sail,
= area of right triangle
= 1/2 x base x height
= 1/2 x 15 x 20
= 150 ft²
we are given that the price per squre foot is $20.50
hence cost of sail
= price per square foot x area of sail
= $20.50 x 150 ft²
= $3,075
It's kinda like using variables, but shapes in their place. Let's set the circle to x, the triangle to y, and the square to z. Now the equations say x+(y+z)=13, (y+z)=8, and x+y=7. First thing we can do it plug 8 into the first equation for y+z, getting x+8=13. Subtract 8 to both sides and x (or circle) equals 5. Plug 5 into the last equation, x+y=7 to solve for y, getting 5+y=7. Subtract 5 to both sides and y (or triangle) equals 2. Finally, plug two in for y in y+z=8, getting 2+z=8. Subtract 2 from both sides and z (or square) equals 6. Hope I've explained it clearly!!
Answer:
5.15625
Step-by-step explanation:
*Multiply the bottom and add the top
*Then divide the top number by the bottom using a calculator to get a decimal.
Answer:
x = 1
Step-by-step explanation:
So first we have to identify what f(x) and g(x) equals. We can do this by looking at their y-intercept and determining their slope, by its rise/run
the two equations are:
y = -2x - 1
y = x + 2
now we solve
f(x) + g(x) = 0
substitute
-2x - 1 + x + 2 = 0
simplify
-x + 1 = 0
divide by -1
x - 1 = 0
add one on both sides
x = 1
