Question unclear
Step-by-step explanation:
If it is a trapezoid, you can simply find the average of the two base lengths, but I can't help much without seeing the shape. Please add a picture of the shape.
Answer:
First answer is correct and the answer for the second question is a = 30
If Ann cleans in 12 hours then she cleans
of the apartment per hour. Similarly Liz cleans
of the appartment per hour. So together then can clean
of the apartment for hour. Therefor it will take them
hours to clean.
The general formula
can be used as a check if needed.
Answer:
The answer is t>0
Step-by-step explanation:
Let's solve your inequality step-by-step.
−2<3t−2
Step 1: Flip the equation.
3t−2>−2
Step 2: Add 2 to both sides.
3t−2+2>−2+2
3t>0
Step 3: Divide both sides by 3.
3t
/3 > 0/3
<em><u>t>0
</u></em>
<span>Inflection points are where the function changes concavity. Since concave up corresponds to a positive second derivative and concave down corresponds to a negative second derivative, then when the function changes from concave up to concave down (or vise versa) the second derivative must equal zero at that point. So the second derivative must equal zero to be an inflection point. But don't get excited yet. You have to make sure that the concavity actually changes at that point.</span>
