Answer:
0.62
Step-by-step explanation:
There are a total of 10 marbles in the bag.
P(blue and not blue) = 5/10 × 5/10 = 25/100
P(red and not red) = 2/10 × 8/10 = 16/100
P(green and not green) = 3/10 × 7/10 = 21/100
P = 25/100 + 16/100 + 21/100
P = 62/100
P = 0.62
Alternatively, you can calculate it this way:
P(both blue) = (5/10)² = 25/100
P(both red) = (2/10)² = 4/100
P(both green) = (3/10)² = 9/100
P = 1 − (25/100 + 4/10 + 9/100)
P = 1 − 38/100
P = 62/100
P = 0.62
Answer:
(x, y) = (4, -2)
Step-by-step explanation:
The coefficient of y in the second equation is double the coefficient of y in the first. We can subtract twice the first equation from the second to eliminate y.
(3x +4) -2(x +2y) = (4) -2(0)
x = 4 . . . . . . . . . simplify
Substituting into the first equation, we have ...
4 +2y = 0
2 +y = 0 . . . . . . divide by 2
y = -2 . . . . . . . . subtract 2
The solution is (x, y) = (4, -2).
Answer:
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
rearrange it like an equation.
take everything else out of the middle apart from x.
make sure that what you do to the middle you do to both sides
It's 4 units right and 3 units up :)
