Answer:
(x, y) = (7, -7)
Step-by-step explanation:
You can eliminate y by adding the two equations:
(3x -y) +(3x +y) = (28) +(14)
6x = 42 . . . . simplify
x = 7 . . . . . . divide by 6
You can eliminate x by subtracting the two equations:
(3x +y) -(3x -y) = (14) -(28)
2y = -14 . . . . simplify
y = -7 . . . . . . divide by 2
The solution is (x, y) = (7, -7).
Answer:
98
Step-by-step explanation: do not question the wise one
Answer:
80%
Step-by-step explanation:
Given:
Team D used a recipe that consists of 20 cups of sand, 2 cups of flour, and 3 cups of water.
Question asked:
How does the percent of sand in Team D's recipe compare to that of the other teams ?
Solution:
Team D used a recipe that consists of sand = 20 cups
Team D used a recipe that consists of flour = 2 cups
Team D used a recipe that consists of water = 3 cups
Total number of cups together = 20 + 2+ 3 =25 cups
Now we will have to find percent of cups of sand out of the total number of cups.
By using formula of percentage,
Percent = 

Therefore, 80% of sand in Team D's recipe compare to that of the other teams.
Answer:
x=8
Step-by-step explanation:
Answer:
5 / 6
Step-by-step explanation:
Given that:
Probability that a dice rolled once will not land on 2
Probability = required outcome / Total possible outcomes
Total possible outcomes = (1, 2, 3, 4, 5, 6)
Required outcome = 2
P(not land on 2) = 1 - p(land on 2)
P(land on 2) = 1/6
P(not land on 2) = 1 - 1/6
P(not land on 2) = 5/6