Answer: xem link và 1 số đk nữa
Step-by-step explanation:
Answer:
4π
Step-by-step explanation:
This is a sinusoidal function.
The period of the function is basically the length from one wave crest to the next crest. We can take any 2 subsequent crests.
Lets take our first crest to be at 3π
The next one will be at 7π, as we can see
So, the length from one crest to the next is the period, which is:
7π - 3π
= 4π
Third answer choice is right, 4π is the period.
X = 1 - y & 3x = 8 - 5y ; Find x
Plug in x into the second equation.
3x = 8 - 5y
3(1 - y) = 8 - 5y
Simplify.
3 - 3y = 8 - 5y
Add 5y to both sides.
3 - 3y + 5y = 8
Subtract 3 from both sides.
-3y + 5y = 8 - 3
Simplify.
2y = 5
Divide both sides by 2.
y = 5/2
Now, since you have the value of y, you simply plug y into the first equation.
x = 1 - y
x = 1 - 5/2
Simplify.
x = 1 - 2 1/2
Simplify.
x = -2/2 - 5/2
Simplify.
x = -7/2 AND -3 1/2
~Hope I helped!~
i think 10 more miles.
70/7=10
which means he gets 10 more miles for every gallon of fuel
If one of the points is (0,36), then that shows that, that is the number where the line crosses the y-axis, so now all you have to do is plug in 36 to b in the y=mx+b formula. So the answer is B
