Answer:
D and C
Step-by-step explanation:
Given the 2 equations
3x - y = 5 → (1)
2x + 3y = - 15 → (2)
Multiplying (1) by 3 and adding to (2) will eliminate the y- term
9x - 3y = 15 → (3)
Add (2) and (3) term by term to eliminate y
11x + 0 = 0
11x = 0 ⇒ x = 0
Substitute x = 0 into either of the 2 equations and solve for y
Substituting into (2)
2(0) + 3y = - 15
0 + 3y = - 15
3y = - 15 ( divide both sides by 3 )
y = - 5
solution is (0, - 5 )
Number of gallon of water = x
number of gallon to be evaporated = 90 - x
13.5(90 - x) = 0.25
Answer:
$23.31
Step-by-step explanation:
$12.95/5
=$2.59/per bag
$2.59*9
=$23.31
Here are all the possible outcomes
when you toss a coin 4 times.
Arrows point to the outcomes that
include at least 3 tails.
H H H H
H H H T
H H T H
H H T T
H T H H
H T H T
H T T H
H T T T <===
T H H H
T H H T
T H T H
T H T T <===
T T H H
T T H T <===
T T T H <===
T T T T <===
There are five of them.
