So, the first thing you want to find out is how many seconds each person adds to the wait time. Find out how many seconds are in 20 minutes.. 20*60=120. 120/150=0.8 seconds. Each person adds 0.8 seconds to the wait time. Now, multiply that by 240.. 240*0.8=192 seconds. Lastly, find out how many minutes 192 seconds is... 192/60=32 minutes.
I hope I did that right! And if I did, I hope that helped!
So say you are adding 1/2 and 1 1/2
you would turn the mixed number into a improper fraction by multiplying the denominator by the whole number, then add it to the numerator
for this example it would be 2 x 1 = 2 + 1 = 3 then put it over the denominator
we would get 3/2 then we add 1/2 to it getting 4/2,
then depending on the question we would either leave it as an improper fraction like 4/2 or we would turn it to a mixed fraction, 2 but it will not always be a whole number like this.
like for example if this problem was 1/4 + 1 2/4 we could get 1 3/4
I hope that this helped you somehow because I tried to explain this to the best of my ability.
We will have the following:
First, we write the both equations: the line and the circle:
This can be seeing as follows:
Now, we determine the point where the line intersects the circle in the first quadrant, so first, we determine the positive part of the circle, that is:
Now, we equal this expression and the line:
From this, we take the positive value, since it the only one that makes sense under the parameters required, now we find the value of y:
So, the solution is at the point:
This can be seeing as follows:
Answer:
6 y² - 20 y + 6
Step-by-step explanation:
Multiply step by step the terms inside the brackets:
3y * y
3y * -3
-1 * y
-1 * -3
add those up to get 3y² - 10 y + 3
multiply all terms of the result by 2