What am I supposed to do

Mathematics

2 answers:

arsen [322]3 years ago

7 0

Im pretty sure you do 14 x 9 which is 126 then do 126 x 3 which is 378mm is your answer expression: (14mmx9mm)x3mm answer: 378mm
hope this helps

masya89 [10]3 years ago

4 0

First focus on the main sides. To find the surface area of one side, you must do LxW (length x width). Which is 9x14. And since there are 2 of these size rectangles, 9x14x12=252 (For the ones on the front and back). Now for the top and bottom, use LxW again, 3x14, and since there are 2 of these size rectangles, 3x14x2=84. Now for the Left and Right sides, 3x9. Once again, there are two of these sizes so 3x9x2=54. Then add all those up, the ANSWER IS 252+84+54= 390

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Can someone please explain how to do these?

Pani-rosa [81]

Answer:

First question answer: The limit is 69

Second question answer: The limit is 5

Step-by-step explanation:

For the first limit, plug in $x=8$ in the expression $(9x-3)$ , that's the answer for linear equations and limits.

So we have:

$9x-3\\9(8)-3\\72-3\\69$

The answer is 69

For the second limit, if we do same thing as the first, we will get division by 0. Also indeterminate form, 0 divided by 0. Thus we would think that the limit does not exist. But if we do some algebra, we can easily simplify it and thus plug in the value $x=1$ into the simplified expression to get the correct answer. Shown below: