3w-13w=-20
Combine like terms
-10w=-20
divide both sides by -10
w=2
<span>Length of outer track = sum of length of 10 pieces = circumference of the outer circle
if R is the Radius of outer circle then...
Circumference of the outer track = 2pi*R
Similarly the circumference of the inner track (with radius r) = 2pi*r
length of each outer piece is 3.4 inch more than length of inner piece
So total outer length is 10*3.4 =34 inches more than the inner length.
=> Outer Circumference - Inner Circumference = 34 inches
=> 2pi*R - 2pi*r = 34
=> 2pi(R -r) = 34
=> R-r = 34/2pi = 5.41 inches
=> R-r = Width of the track = 5.41 inches</span>
Answer: 5 sour straws
Step-by-step explanation: If he spends 7.50, then he still has 7.50 left. 7.50 / 5= 1.50
Answer:
87 scorpions do not live in Arizona
Step-by-step explanation:
Answer:
About 300 pages
Explanation:
Week 1: 75 pages
+
Week 2: 75 pages
+
Week 3: 75 pages
+
Week 4: 75 pages
=
About 300 pages in one month
