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enyata [817]
3 years ago
8

The cars access code has four digits first digit cannot be zero and the last digit must be even

Mathematics
1 answer:
arlik [135]3 years ago
4 0
There's 9 choices for the first digit and 4 choices for the last digit. The number of choices for the 2nd and 3rd digits is 90 if 2 numbers are different. or 100 if duplicates are allowed.

If duplicates are allowed the answer is 9 * 100 * 4 = 3600 possible numbers.
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abby and her 5 friends went to a restaurant to buy sodas. if they bought 2 of each size soda which expression should be used to
I am Lyosha [343]
If they EACH bough 2 of EACH size soda, then it would be.

S: # of different sized sodas
P: Price of soda

5×2(S×P)

but if each sized sodas cost a different amount it would be

S: Price of first size
S2: Price of second size
S3: Price of third size
and so on.

5×2(S+S2+S3...)

but if they all together bought 2 of EACH size soda, then it is.

2(S×P)

but if each sized sodas cost a different amount it would be

S: Price of first size
S2: Price of second size
S3: Price of third size
and so on.

2(S+S2+S3...)
8 0
3 years ago
The Identity function i behaves just like the number 1. That is (F o i)=f and (i o g)= g
andrezito [222]

I'll denote the identity function by \mathrm{Id}. Then for any functions f with inverse f^{-1},

\begin{cases}f\circ\mathrm{Id}=f\\\mathrm{Id}\circ f=f\\f\circ f^{-1}=\mathrm{Id}\end{cases}

One important fact is that composition is associative, meaning for functions f,g,h, we have

(f\circ g)\circ h=f\circ(g\circ h)

So given

h=f\circ g

we can compose the functions on either side with g^{-1}:

h\circ g^{-1}=(f\circ g)\circ g^{-1}=f\circ(g\circ g^{-1})

then apply the rules listed above:

h\circ g^{-1}=f\circ\mathrm{Id}=f

3 0
3 years ago
**Absurd answers won't be tolerated** They're about 50 students in a class that took a test. 21 of those students passed. If 13
xxTIMURxx [149]

Answer: About 10.5 passed.

Step-by-step explanation:

1. Convert 50% into a decimal.

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  • Divide 1/2 by its numerator and denominator.

  • 1 / 2 = 0.5

Hence, the answer is 0.5.

4 0
3 years ago
PLSSSSSSSSS HELP I BEG U
Dahasolnce [82]
It's the last one,
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3 years ago
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Sergio039 [100]
In whole numbers it should be 7/9 in simplest form
3 0
2 years ago
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