6. Expand the left side:
Recall the Pythagorean identity,
which leaves us with
Recall the angle sum formula for cosine:
which gets us to where we need to be:
and we're done.
7. A. The formulas you need are
This gives
7. B. Solving for gives
which holds for
where is any integer.
7. C. Factorize as
From here, we have
which hold for
where is any integer.
Answer:
y = -4x - 3
Step-by-step explanation:
It is given outright that slope is -4, so right now we have:
y = -4x
Now, plug that point's values into the current formula.
-7 = -4(1) + b
-7 = -4 + b
Add 4 to both sides to get b by itself.
-3 = b
Put -3 at the end.
y = -4x - 3
You have 1 apple left... Just 1..
Answer:
3 hours.. I hope
Step-by-step explanation:
For every hour, he pays 11+7 dollars, which is 18.
He pays 18 dollars an hour to rent a bike.
So to find the answer, I just take 67 and divide it by 18.
Comes to 3.7
The answer should be 3 hours.