9n<3n-12 , but I can't simplify it any farther for you. Sorry.
2 + 3 = 5
1/3 + 1/3 = 2/3
Your answer is 5 2/3
hope this helps
The answer should be A
Hope this helps :)
<u>Since I don't see the graphs</u>:
⇒ I am going to answer by the general format of what you should see
<u>The function has zeros at -3, 4</u>:
⇒ which means that the function must interest the x-axis at x = -3 and
x = 4
Hope that helps!
⇒look at the image I uploaded which shows a possible answer
Answer:
Step-by-step explanation:
If you complete the square and double the time to get back to the surface you will have your answer.
d = 2(t^2 - 4t) - 10; Take 1/2 of - 4 and square it. Add the result inside the brackets.
d = 2(t^2 - 4t + (4/2)^2 ) - 10
d = 2*(t^2 - 4t + 4) - 10 - 2*4
Did you notice I put the 2*4 outside the brackets and turned it into a minus. The reason that happened is to offset what is inside the brackets that was added here.
d = 2(x - 2)^2 - 18; t^2 - 4t + 4 is a perfect square. that 2 inside the brackets is critically important.
The 18 is the maximum depth below the surface of the water. (Poor choice of words. Technically - 18 is a minimum). But you want to use t - 2 to make it into 0. t - 2 = 0 ; t =2
What that means is that it took 2 minutes to get 18 meters below the surface of the water. He will break the surface of the water 2 minutes later. I don't exactly know how to answer the question. It is 2 minutes to get from the minimum depth to the surface. It is 4 minutes to get to the surface when he begins his dive.