Answer:
Probability that point chosen is in large circle but not in shaded region:
P = 84%
Step-by-step explanation:
Given that
r = 2 inches
R = 5 inches
<h3>Area of Small circle (shaded region):</h3>
<h3>Area of Large circle:</h3><h3>
</h3><h3>Probability of Point being chosen is inside shaded region:</h3><h3>
</h3><h3>Probability of Point being chosen is NOT inside shaded region:</h3>
P = 100% - 16%
P = 84%
1,3,4 just match the markings.
Answer:
There are 14 4-point questions and 26 2-point questions.
Step-by-step explanation:
m = number of 4-point questions
n = number of 2-point questions
m+n =40
4m + 2n =108
You can solve system by elimination:
Multiply the 1st equation by -4 and keep the 2nd equation the same.
−4(m+n=40) → -4m -4n= -160
4m+2n=108 add them up
-2n = -52 divide both sides by -2
n = 26
plug it back in to solve for m
m + n = 40 →m + 26 =40 subtract 26 to both sides
m = 14