Answer:
it is 37.7
Step-by-step explanation:
The circumference of the circle with a radius of 12 cm = 2(3.1416)(12) = 75.4 cm
The circumference of the semicircle is half that of a circle,
and is therefore (1/2)(75.4) = 37.7 cm.
Answer:
Step-by-step explanation:
You are looking for car b speed.
Car A traveled the distance in 2 h, and Car B traveled the distance in 1.5 h. Car B traveled 15 mph faster than Car A.
Formula r×t=d
2(s-15) = 1.5s
2s - 30 = 1.5s
2s - 1.5s = 30
0.5s = 30
S= 30/0.5
s peed of car b = 60 mph
Answer:
20
Step-by-step explanation:
We can use the Pythagorean theorem to solve
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
12^2+16^2 = c^2
144+256 = c^2
400 = c^2
Take the square root of each side
sqrt(400) = sqrt(c^2)
20 = c
So first you would substitute j and k in the expression.
7(0.5)+5-8(0.25)
3.5+5-2
It would equal 6.5
Hope this helps!