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2 years ago

If it is sunday when you cross the international date line while traveling westward, the next day is

1 answer:

3 0

You cross the date line into Monday.

_____
The next day after Monday is Tuesday. (I find it difficult to tell the intent of the question.)

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4{x + 8} +6 = 38 what is the value of x

zavuch27 [327]

The value of x is 0 because 4*8 is 32 +6 =38 and 4 * 0 is just 0

4 0

3 years ago

Read 2 more answers

For each x and n, find the multiplicative inverse mod n of x. Your answer should be an integer s in the range 0 through n - 1. C

krok68 [10]

Use the Euclidean algorithm to express 1 as a linear combination of $x$ and $n$ .

a. $52^{-1}\equiv40\pmod{77}$ because

77 = 1*52 + 25

52 = 2*25 + 2

25 = 12*2 + 1

so we can write

1 = 25 - 12*2 = 25*25 - 12*52 = (77 - 52)(77 - 52) - 12*52 = 77^2 - 2*52*77 + 52^2 - 12*52

Taken modulo 77 leaves us with

$1\equiv52\cdot52-12\cdot52\equiv40\cdot52\pmod{77}\implies52^{-1}\equiv40\pmod{77}$

b. First, $77\equiv25\pmod{52}$ , so really we're looking for the inverse of 25 mod 52. We've basically done the work in part (a) already:

1 = 25*25 - 12*52

Taken modulo 52, we're left with

$1\equiv25\cdot25\pmod{52}\implies25^{-1}\equiv25\pmod{52}$

c. The EA gives

71 = 1*53 + 18

53 = 2*18 + 17

18 = 1*17 + 1

so we get

1 = 18 - 17 = 3*18 - 53 = 3*71 - 4*53

so that taken module 71, we find

$1\equiv(-4)\cdot53\pmod{71}\implies53^{-1}\equiv-4\equiv67\pmod{71}$

d. Same process as with (b). First we have $71\equiv18\pmod{53}$ , and we've already shown that

1 = 3*18 - 53

which means, taken modulo 53, that

$1\equiv3\cdot18\pmod{53}\implies71^{-1}\equiv18^{-1}\equiv3\pmod{53}$

6 0

2 years ago

Paulita is buying 4 boxes of fruit loops. she has a coupon for 1.00 off each box. her total bill is 10.36. write and solve an eq

kotykmax [81]

The equation would have to be set up as 4b - 4 = 10.36. This is because you’re buying 4 boxes of fruit loops, and $1 taken off each box is $4 total for all four boxes.

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3 years ago

Abjejwjjdjejwjdhhrigvhhyrwwtiij itessfjhvxx

Pachacha [2.7K]

Sjdjdkzjdkdncmdkdjfnkrmd, sjdjdjdjd dkdkcekdkdk djdjjdkdjdj ..

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2 years ago

I don't understand this question very well

shepuryov [24]

There are 10 marbles in the bag all together.
(8/10) = 80% of the marbles in the bag are white.

So if you pull a marble out of the bag, you have an 80% chance
of pulling a white one.

And if you do it many times, you expect that you'll pull
a white one out about 80% of the times.

80% pf 45 times = 0.8 x 45 = 36 times .

8 0

2 years ago