Answer:
maximum area will be 1058 square yards
maximum height will be 81 feet
Step-by-step explanation:
P = 2L +2W
but in this case it will be P= L+2W and P=92 yards
L+2W = 92
Solve for L , L = 92-2W
The area of rectangle A = L x W
Plug in L and simplify: A = (92-2W)W =92W -2W²
Plot in your calculator and look for maximum so when the width is 23 yards maximum area will be 1058 square yards.
Second problems is the maximum height of the rocket. Maximum will be at the vertex of the upside-down parabola.
If b is Billy's age *now*, part A would look something like this:
b + 8
Usually, it looks a little more like x = b + 8, just because we like setting the equation to an unknown variable (usually x).
b + 8 = 21
To simplify the above equation, subtract 8 from both sides:
b = 21 - 8
OR
b = 13
We just found the answer to part C above.
I'm not going to work out part D for you (you got this), but use the subtraction sign to your benefit and replace it with a word like "ago", if you're choosing age as your word problem. You could also do the traditional candy word problem where you once had 10 jellybeans and now you have 6.... Up to you. "A" will be your "now" in that case. Have fun!
Answer:
Derivative of sinx is cosx ...........
Answer:
Step-by-step explanation:
sum the outcome times the probabilities
5*.5+6*.12+7*.2+8*.08+9*.06+10*.04= 6.2