Answer:
45
Step-by-step explanation:
x - 7 = 38
add 7 to both sides to get the variable by itself
x = 45
280+220=500 hope this helps
Answer:
1555 people
Step-by-step explanation:
First, average the votes for polar bears.
(46 + 43 + 49)/3 = 46
Next, make the variable x equal to the estimate of the number of people who will prefer polar bear out of the 3380 people and set up your proportion equation.
x/3380 = 46/100
x = 1554.8
Round to the nearest whole number to get 1555.
Answer:
0
Step-by-step explanation:
total number of balls = 3+5+2= 10
Probability of getting red P(R) = 3/10
Probability of getting white P(W) = 5/10
Probability of getting black P(B) = 2/10
for each red ball drawn you win $6 and for each black ball drawn you loose $9 dollars
E(X)= 6×3/10 +0×5/10 -9×2/10= 0
E(X)= 0
Answer:
reflection
Step-by-step explanation:
Im just learned this so if I'm wrong, i'm sorry >.<
