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devlian [24]
3 years ago
14

A Store-It-All storage facility requires users to enter a four digit code, using numbers 0-9, to get through the gate. You need

to get a box of winter clothes from your storage container, but you forgot the code.
How many possible codes are there if th digits cannot be repeated ?

What is the probability that you will guess the correct code on your first try ?

If the digits can be repeated , how many possible codes are there ?
Mathematics
1 answer:
Aloiza [94]3 years ago
6 0

Answer:

Copy all that then paste it to Google and there is a site that I found the answer on but I can't copy it it's to long.

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Find The art length of a sector with an area of 8 square units.
frez [133]
\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta \pi r^2}{360}\quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad degrees\\
------\\
A=8\\
r=4
\end{cases}\implies 8=\cfrac{\theta \pi 4^2}{360}\implies \cfrac{8\cdot 360}{4^2\pi }=\theta 
\\\\\\
\cfrac{2880}{16\pi }=\theta \implies \boxed{\cfrac{180}{\pi }=\theta }\\\\
-------------------------------\\\\

\bf \textit{arc's length}\\\\
s=\cfrac{\theta \pi r}{180}\quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad degrees\\
------\\
\theta =\frac{180}{\pi }\\
r=4
\end{cases}\implies s=\cfrac{\frac{180}{\underline{\pi} }\underline{\pi} \cdot 4}{180}\implies s=\cfrac{\underline{180}\cdot 4}{\underline{180}}
\\\\\\
\boxed{s=4}

if you do a quick calculation on what that angle is, you'll notice that it is exactly 1 radian, and an angle of 1 radian, has an arc that is the same length as its radius.

that's pretty much what one-radian stands for, an angle, whose arc is the same length as its radius.
6 0
3 years ago
CAN SOMEONE PLEASE HELP ME???
KATRIN_1 [288]

Answer:

Option A, x ≥ -2

Step-by-step explanation:

<u>Since the line is not dotted, that means that -2 is included.  Also, since the darkened part is toward positive infinity, that means that it is ≥.</u>

<u />

So, it is <em>x ≥ -2</em>

Answer:  Option A, x ≥ -2

5 0
4 years ago
The sum of the measures of angle A and angle B equal 90 degrees. What is cos B​
stira [4]

Answer:I think it is 12/25

Step-by-step explanation:

4 0
3 years ago
What is the best estimate for the sum 2/9 + 10/11 ?
Gelneren [198K]

Answer:

4. 0 + 1 = 1

Step-by-step explanation:

since 2/9 is a bit small

and

since 10/11 is almost whole

3 0
3 years ago
Read 2 more answers
Help me plz nowwwwww
Ymorist [56]

Answer:

...

Step-by-step explanation:

5 0
3 years ago
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