2 years ago

What is the recirpocal of 21/32

Mathematics

1 answer:

soldier1979 [14.2K]2 years ago

3 0

The product of a number and its reciprocal would be equal to one

So just flip the numbers

=32/21

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goblinko [34]

Answer:

the anwser is 2637 passengers a day

Step-by-step explanation:

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3 years ago

Natalie works in a shop and earn $43 per day. She earns an extra $3 for each toy she sells. If Natalie wants to earn at least $7

Pachacha [2.7K]

This would be your answer 43 + 3n ≥ 70, so n ≥ 9

I hape this help

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3 years ago

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Given $m\geq 2$, denote by $b^{-1}$ the inverse of $b\pmod{m}$. That is, $b^{-1}$ is the residue for which $bb^{-1}\equiv 1\pmod

goblinko [34]

$(2+3)^{-1}\equiv5^{-1}\pmod7$ is the number L such that

$5L\equiv1\pmod7$

Consider the first 7 multiples of 5:

5, 10, 15, 20, 25, 30, 35

Taken mod 7, these are equivalent to

5, 3, 1, 6, 4, 2, 0

This tells us that 3 is the inverse of 5 mod 7, so L = 3.

Similarly, compute the inverses modulo 7 of 2 and 3:

$2a\equiv1\pmod7\implies a\equiv4\pmod7$

since 2*4 = 8, whose residue is 1 mod 7;

$3b\equiv1\pmod7\implies b\equiv5\pmod7$

which we got for free by finding the inverse of 5 earlier. So

$2^{-1}+3^{-1}\equiv4+5\equiv9\equiv2\pmod7$

and so R = 2.

Then L - R = 1.

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3 years ago

What is a down payment of 20 percent on a purchase price of $215,000

PSYCHO15rus [73]

20% of 215,000......turn ur percent to a decimal...." of " means multiply
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3 years ago

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NeX [460]

90/15-7/15=83/15 the correct answer to this equation.

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3 years ago