Answer:
Step-by-step explanation:
Yesterday, her rate was 8mph, her time was x hours.
Today, her rate was 13mph, her time was 13 - x hours.
So the total distance she biked on the two days is
d = 8x + 13(13 - x), or 169 - 5x
That would be 3'000 + 4000 + 400 + 80 = 7,480
Answer:
x=10, y=5
Step-by-step explanation:
For substitution, you always want to get the variable alone. The second equation (x-2y=0) will be easier to substitute into the first equation.
x-2y=0
x=2y
You can substitute 2y as x on the first equation (x+4y=30).
2y+4y=30
6y=30
y=5
Plug y=5 into any equation.
x+4(5)=30
x+20=30
x=10
Answer:
Function with smallest zero is:
f(x); (2, 0).
Step-by-step explanation:
f(x):
2x2 − 14x + 20 = 0
x^2 - 7x + 10 = 0
(x - 5)(x - 2) = 0
So the zeroes are (2, 0) and (5, 0)
g(x):
From the table:
when g(x) = 0, x =19 so its zero is (19, 0).
