Answer:
<h3>42</h3>
<u>Required probability:</u>
- P(≤4) = (18 + 14 + 20 + 16)/(18 + 14 + 20 + 16 + 15 + 17) = 68/100 = 0.68
<h3>43</h3>
<u>Required probability:</u>
- P(>3) = (20 + 16 + 15 + 17) / (18 + 14 + 20 + 16 + 15 + 17) = 68/100 = 0.68
<h3>44</h3>
<u>At least 2 students pass:</u>
- P(2 or 3) = (3/5)² + (3/5)³ = 9/25 + 27/125 = 72/125 = 0.576
<h3>45</h3>
<u>Number of x's:</u>
- x/108 = 4/27
- x = 108*4/27
- x = 16
Answer:
30 boys and 60 girls
Step-by-step explanation:
30 boys each get 2 girls 30 times 2 is 60
Answer:
1/3
Step-by-step explanation:
The total number of marbles is
4red+ 3 green + 5 blue = 12 marbles
P(red) = number of red/ total
= 4/12
=1/3
Answer:
x ≈ 41.6°
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan x = = = = , then
x = ( ) ≈ 41.6° ( to the nearest tenth )
A=10
B=7
C=3
D=10
B. (70+21)x2= 182
C. (30x2)=60
Take the 60 and add it to 182 an get
242 is the final answer