Answer:
P = (21.4a+36.6) cm
Step-by-step explanation:
Given that,
The width of a rectangle, b = (6.9a+8.5) cm
The length of a rectangle, l = (3.8a+9.8) cm
We need to find the perimeter of the rectangle. Perimeter is the sum of all sides. So,
P = 2(l+b)
Put all the values,
P = 2(6.9a+8.5+3.8a+9.8)
= 2(6.9a+3.8a+8.5+9.8)
= 2(10.7
a+18.3)
= (21.4a+36.6)
So, the perimeter of the rectangle is (21.4a+36.6) cm.
I believe that the answer is 120 marbles.<span />
1 2/7 = 9/7
9/7 * 6/7 = 54/49
Answer:
Step-by-step explanation:
you need the arc length formula .. do you have it?
s = r ∅
s is the arc length in radians but you can make it in degrees just by
using s = 2πr (θ/360)
the angle is 180 for the picture.
so the arc length is just 
r
r= 4
*4 = 12.56637.... approx
Answer:
p=2
Step-by-step explanation:
−4p=11−19
−4p=−8
then you divide both sides by -4 and two negatives make a positive.
