Answer:
(- 1, - 1 )
Step-by-step explanation:
Given the 2 equations
x = 4y + 3 → (1)
2x + y = - 3 → (2)
Substitute x = 4y + 3 into (2)
2(4y + 3) + y = - 3 ← distribute parenthesis and simplify left side
8y + 6 + y = - 3
9y + 6 = - 3 ( subtract 6 from both sides )
9y = - 9 ( divide both sides by 9 )
y = - 1
Substitute y = - 1 into (1) for corresponding value of x
x = 4(- 1) + 3 = - 4 + 3 = - 1
solution is (- 1, - 1 )
The answer is 7. You can solve it by going through all the answers and testing the math. 7 x 15$ = 105 so add that to 3 x 25 = 75 and it proves it equals 180$.
Hi there!
One mile is equal to 5280 feet. To figure out how many miles the mountain climber climbed, all we need to do is to divide 15840 by 5280. Doing this give us 3 miles.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
Answer:
car with 2 people: $10
car with 4 people: $14
car with 10 people: $26
Step-by-step explanation:
