A. 4x + 20
4x= 20
x= -20/-4.
x= 5
b. 1/5x + 10
1/5x = -10
x= -10÷-1/5
x= -10/1 × -5/1
x= -50/1
x= -50
It is the very first option which is a
So this is integers. What you are going to do is 54 - - 34 which equals positive 20 because 54 is higher than 34 which is negative, and 54 is positive. So the answer is going to be 20$.
Answer: 30
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given that one of the wagers in the game of roulette is to place a bet that the ball will land on a black number.
Probability will be 18/38 for black and red and 2/38 for green
We have
Colour Black Red Green Total
Number 18 18 2 38
Bet amt. 7 7 7
Win amt. 7 0 0
Net win 0 -7 -7
Prob 18/38 18/38 2/38
Netwin*p 0 -126/38 -14/38
Expected value of win = -140/38 = -3.68