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4 years ago

I think I got the answer correct and someone please check it

Mathematics

1 answer:

serg [7]4 years ago

7 0

3 1/4* 1 1/3

mutiply the whole numbers

3*1= 3

mutiply the numerators

1*1= 1

mutiply the denominators

4*3= 12

Answer:

3 1/12 - second choice

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Find the inverse for 43 modulo 660

Tatiana [17]

We're looking for $x$ such that

$43x\equiv1\mod{660}$

so for some integer $n$ we can write

$43x+660n=1$

Apply Euclid's algorithm:

$660=43(15)+15$
$43=15(2)+13$
$15=13(1)+2$
$13=2(6)+1$
$\implies(660,43)=(43,15)=(15,13)=(13,2)=1$

From this we have

$1=13-2(6)$
$\implies1=-6(15)+7(13)$
$\implies1=-20(15)+7(43)$
$\implies1=-20(660)+307(43)$
$\implies(-20(660)+307(43))\equiv307(43)\equiv1\mod{660}$

which means 307 is the inverse of 43 modulo 660.

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4 years ago

Round 765.09 to the nearest tenth

inn [45]

765 rounded to the nearest tenth

6 0

4 years ago

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What is the volume of a sphere with a radius of 9.7 ft, rounded to the nearest tenth of

viktelen [127]

Answer:

3923

Step-by-step explanation:

Have a nice day!

3 0

3 years ago

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Eighty percent of seniors at the local high school graduate each year. If there are 750 seniors this year, how many will graduat

yulyashka [42]

What you need to find is 80% of 750

There are many ways to figure that out but the way that I did it is to divide 750 by 100. The answer (7.5). Is 1% of 750
In all I had to do was multiply 7.5 x 80. Giving us the answer which is 600

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3 years ago

In April, The Kazbaas drove 760 miles in their tour van.

DedPeter [7]

9514 1404 393

Answer:

£135.98

Step-by-step explanation:

$(760\text{ mi})\dfrac{1\text{ gal}}{29.5\text{ mi}}\cdot\dfrac{4.55\text{ L}}{1\text{ gal}}\cdot\dfrac{\pounds1.16}{1\text{ L}}=\dfrac{760\cdot4.55\cdot\pounds1.16}{29.5}\\\\=\boxed{\pounds135.98}$

It cost £135.98 for petrol in April.

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3 years ago