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Answer:
P(X=0) = 0.7158
P(X=1) = 0.2684
P(X=2) =0.0158
Step-by-step explanation:
Number of defective laptops = 3
Number of normal laptops = 17
If the school chooses 2 laptops from this lot, the number of defectives (X) could be 0, 1, or 2.
For zero defectives:
For one defective:
For two defectives:
Answer:
The number of adult tickets sold was 121
Step-by-step explanation:
The general equation is: <em>S</em> + <em>A</em> = <em>T</em> ;where <em>S</em> means student tickets, <em>A</em> means adult tickets and <em>T</em> means total tickets. We know that <em>S</em> is two times <em>A</em> and <em>T</em> is 363. So, <em>S</em> will be 2x and A will be x. Then, the new equation is 2x + x = 363.
<em>S</em> + <em>A</em> = <em>T</em>
2x + x = 363
3x = 363
x = 363 / 3
x = 121
Adult tickets: <em>A</em> = x = 121
Student tickets: <em>S</em> = 2x = 2 * 121 = 242
Answer:
Use an ruler if you must listen to explanation.
Step-by-step explanation:
So this is actually very easy so it already tells you the Width= Feet is 80. But the Length = Feet is 6 greater any time you see something that says Number? Greater it means Multiply so multiply 6x80=480 so your length will be 480 Ok that's true But! The Width isn't answered your paper/screen Says, The perimeter of a rectangular outdoor patio is 80 ft. The length is 6 feet greater than the width what are the dimersions of the patio. Dimersion's what is it? The number.
So your confused?
Here are a list of things you can use,
A ruler
A protractor
Or A Tape Measuerer
Pardon if spelled wrong.
Anyway the perimeter is 80 ft. Here's what i would do i would use a ruler and see how long the width is then times that with 6 and you should get your answer i cannot use my ruler because picture is to small even when clicked this should help you.
Hope this helped!
Answer:
42
Step-by-step explanation:
f(3)=2(3)^3-(3)^2-4(3)+9
f(3)=2(27)-(9)-12+9
f(3)=54-21+9
f(3)=33+9
f(3)=42
