Answer:
a. 
b. 
Step-by-step explanation:
a. Radius of semicircle (r) = r
Diameter of semicircle (d) = 2r
Length of rectangle (l) = 2*diameter of semicircle = 2*2r = 4r
Distance around the track (p) = circumference of circle + 2(l)
Note: the two semicircles of the track = 1 full circle
Circumference of full circle = πd = π*2r = 2πr
Distance around the track:
p = 2πr + 2(4r)
p = 2πr + 8r
b. Rewriting the formula to make radius, r, the subject of the formula in terms of distance around the track.
Factor out r
Divide both sides by (2π + 8)
Step-by-step explanation:
7
Answer:
reflexive property
Step-by-step explanation:
reflexive property states that a number equals itself, a = a, so since 16 = 16, or 16 equals itself, it's reflexive.
Lauren ‘tutored’(i think that’s what the question said idk) 4 students. take the 3/4 and multiply it by the value of time(6 hours). the calculated answer is 4.5, but you can’t half-tutor a student, and you can’t round up, so the answer is 4
Hello!
Recall that the equation of an exponential graph is:
We can see from the graph there is a y-intercept at y = 5. Plugging in 0 for x results in:
Solve for b by plugging in another point on the graph:
Write the final equation:
