Question

please give me answer of these

Answer 1

3) Volume of cube = S³ or S x S x S

                                = 2.3³ or 2.3 x 2.3 x 2.3

                                 =12.167000 cm³

4)Its even because 8 in the units place( 78 ) when squared gives 16 which is even

5) 12(3-x) = 48

=24 - 12x = 48

= (24 - 24) - 12x = 48 - 24

= -12x = 24

= x = $\frac{24}{-12}$

= x = $\frac{24}{-1}$

= x = (-24)

6) Yes, because 1$\frac{3}{7}$ = $\frac{10}{7}$

And multiplicative inverse of $\frac{10}{7}$ is $\frac{7}{10}$ which is also 0.7

7) $\sqrt[3]{385875}$ = 72

actually its cube root is found with a remainder so its not a perfect cube root

prime factorization of 385875 is 3 x 3 x 5 x 5 x 5 x 7 x 7 x 7

when we add 3 in th line ( 3 x 3 x 3 x 5 x 5 x 5 x 7 x 7 x 7 )

we get a perfect cube that is 1157625

Therefor 3 is the no to be multiplied

8) Probablity = $\frac{1}{10(6 pencils + 4 erasers)}$

= $\frac{1}{10}$

i am assured about the 8th answer...

BUT THANKS FOR THE QUSETIONS !!!!!!!