Question

in the image lesson name exponents.

next lesson name rational number. 1. what number should be from 7/-8 to get -13/12 ?

$2. \: simplip fy \: 4 \ \frac{1}{5} ( - 5 \ \frac{3}{10} )+ 1 \ \frac{1}{2}$
$find \: the \: three \: rational \: number \: between \ \frac{ - 7}{2} \: and \: - 2$

Answer 1

1. 3^2x+1=243

2x+1=243/3

2x=81+1

x=82/2=41.

hope it is helpful to you.

Answer 2

Answer:

x=2

Step-by-step explanation:

If $3^{(2x+1)}\div9=27$, Find the value of $x$

$3^{(2x+1)}\div9=27\\\\3^{(2x+1)}=9\times27\\\\3^{(2x+1)}=3^2\times3^3\\\\3^{(2x+1)}=3^{(2+3)}\\\\3^{(2x+1)}=3^5$

therefore,

$(2x+1)=5\\\\2x=5-1\\\\2x=4\\\\x=2$