Answer:
A)
P=2x+2\pi rP=2x+2πr
B)
x=\frac{1}{2}(P-2\pi r)x=
2
1
(P−2πr)
C)
x\approx173\text{ feet}x≈173 feet
Step-by-step explanation:
So, the track is composed of a rectangle and two semicircles.
The side length of the rectangle is x, and the radius of the semicircles is r.
Part A)
The perimeter is simply the length around the figure.
We can see that the perimeter will be equivalent to two times x plus two times the circumference of the semi-circles.
Answer:
x = SA - 72 /24
Step-by-step explanation:
SA=2(wl+hl+hw)
where,
- SA - surface area
- l - length
- w - width
- h - height
➟ SA = 2(wl+hl+hw)
Insert values
➟ SA = 2((6)(x)+(6)(x)+(6)(6))
Calculate
➟ SA = 2(6x + 6x + 36)
Add together
➟ SA = 2(12x + 36)
Multiply values in the bracket by 2
➟ SA = 24x + 72
Substract 72 from both sides
➟ SA - 72 = 24x
Switch sides
➟ 24x = SA - 72
Divide both sides by the coefficient of x
➟ 24x/24 = SA - 72/24
Calculate
➟ x = SA - 72 /24
Answer to your question is 2
Answer:
c = 3 oil changes
Step-by-step explanation:
The fixed rate for oil change is $ 40
The surplus rate for miles outside the radius is $ 2.25
Josh lives 7 miles of the radius
Therefore an equation for c: The largest number of oil changes that can be scheduled and maintained within the budget for the year is:
oil changes
Therefore, with the budget set Josh can make a maximum of 3 oil changes per year
