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\(7\frac{3}{10}\div 5\frac{2}{5}\)

\(= \frac{37}{10}\div \frac{27}{5}\\ =\frac{37}{10}\times \frac{5}{27}\\ =\frac{37}{54}\)

1) 3 1/2 / 4 3/8

= 7/3 / 35/8

7/3 * 8/35

(7*8)/(3*35)

2) 7 3/10 / 5 2/5

= 73/10 / 27/5

73/10 * 5/27

(73*5)/(10*27)

3) 7 2/9 /5/9

= 65/9 / 5/9

65/9 * 9/5

(65*9)/(9*5)

4) 9 6/7 / 2 2/7

= 69/7 / 16/7

(69*7)/(7*16)

5)7 8/9 / 3 2/2

= 71/9 / 8/2

(71*2)/(9*8)

\(\dfrac{3\frac{1}{2}}{4\frac{3}{8}}\)

\(=\frac{7}{2}\div \frac{35}{8}\\ = \frac{7}{2}\times \frac{8}{35}\\ =\frac{4}{5}\)

i think the only awnser is c

i think

thank you both

3x + 2  = x+ 2x + 2

3x + 2 = 3x + 2             any value of x will work

1) 3 2/5 =17/5

     4 2/3= 14/3

  17/5 * 14/3

(17*14)/15

2) 4 3/8 =35/8

    2 1/3 =7/3

 (35*7)/(8*3)

3) 4 1/6 * 3 2/3=

   25/24 * 11/3

(25*11)/(24*3)

4) 5* 3 2/5

( 5* 17)/5

5) 1 4/5 * 2 3/10

9/5 * 23/10

(9*23)/(5*10)

Well     tan a  =  sina / cosa    for small angles cosa ~ 1  thus   tana = ~ sina /1 = sin a

.9 tana =  sina

tana / sina = 1/ .9

1/cosa = 1/.9

.9 = cosa    a =25.84 degrees     Tan 25.84 = .484     sin 25.84 = .4358

1) \(3\frac{2}{5}\times 4\frac{2}{3}\\ = \frac{17}{5}\times \frac{14}{3}\\ =\frac{17\times 14}{5\times 3}\\ =\frac{238}{15}\\ =15\frac{13}{15}\)

2)\(4\frac{3}{8}\times 2\frac{1}{3}\\ =\frac{35}{8}\times \frac{7}{3}\\ =\frac{245}{24}\\ =10\frac{5}{24}\)

3)\(4\frac{1}{6}\times 3\frac{2}{3}\\ =\frac{25}{6}\times \frac{11}{3}\\ =\frac{275}{18}\\ =15\frac{5}{18}\)

4)\(5\times 3\frac{2}{5}\\ =5\times 3 + 5\times \frac{2}{5}\\ =15+2\\ =17\)

5)\(1\frac{4}{5}\times 2\frac{3}{10}\\ =\frac{9}{5}\times \frac{23}{10}\\ =\frac{207}{50}\\ =4\frac{7}{50}\)

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x*10^-9 meters is already nanometers.

Therefore 9.186 * 10^-9 meters = 9.186 nanometers.

come on that is easy bro it is 

9.18600 nanometers

3x + 1 < 0

3x  <  -1

x  < - 1/3       so for any value of x less than -1/3 the answer to the equation will be negative

pick one value of 'x'    x = -2    -2^2 = 4

8 17/20 - 2 5/12

= 8 51/60 - 2 25/60

= 6 26/60

= 6 13/30

\(9\frac{1}{8}-5\frac{1}{10}\\ =9\frac{5}{40}-5\frac{4}{40}\\ =4\frac{1}{40}\)

3x+1=1

3x=0

x=0

3x+1=0

3x=-1

x= -1/3

If the right hand side is less than 1, then x would be a negative number.

I will use 3x+1=0 as example.

You solve the equation to get x= -1/3, the work is listed above. Then square it. (-1/3)^2=1/9

5.

Just kidding XD
Half of 55 = 55/2 or 27 1/2 or 27.5

6 11/15 - 3 7/10

= 6 22/30 - 3 21/30

= 3 1/30

2 5/6 - 1 1/4

= 2 10/12 - 1 3/12

= 1 7/12

\(\textbf{Let } x = \sqrt3. \\x^2=3\\ x^{2\times\frac{1}{2}}=3^{\frac{1}{2}}\\ x=3^{\frac{1}{2}}\)