Question

If A # B = (A x B) / (A + B)

a) Calculate 9 # (10 # 10)

b) Calculate 8 # (5 # 5)

Answer 1

@dtan5457

Answer 2

@dan613

Answer 3

please help me

Answer 4

ok lets to it right
\[10\#10=\frac{10\times 10}{10+10}\] is the start
so we compute that first

Answer 5

i get \(\frac{100}{20}=5\)

Answer 6

it tells you what it means after the equal sign

Answer 7

it means take the two number, multiply them, then divide by their sum

Answer 8

so for example
\[3\#4=\frac{3\times 4}{3+4}=\frac{12}{7}\]

Answer 9

ok so continue with the problem

Answer 10

so lets go back to the top
you want \[9\#(10\#10)\]the parentheses mean you have to do that first so step one is compute \(10\#10\)

Answer 11

yeah i know that

Answer 12

i get \(10\#10=20\) by the computation aove

Answer 13

second step is to compute \(9\#20\) as before

Answer 14

9*20/9+20

Answer 15

you get
\[9\#20=\frac{9\times 20}{9+20}\]

Answer 16

yup

Answer 17

so thats a

Answer 18

@satellite73

Answer 19

@MikeyMaximum

Answer 20

yes that is A

Answer 21

youre wrong
9 # (10 # 10) = 9 # (100 / 20) = 9 # 5 = 45 / 14 = 3.21

Answer 22

i know this because its an online test

Answer 23

sorry didnt mean to be rude

Answer 24

oh yes it should have been \(9\#5\) not \(9\#20\) my mistake

Answer 25

im stills tuck on b
i have 1 more try

Answer 26

its okay

Answer 27

but now that i understand i can do this easily.

Answer 28

8 # (5 # 5) = 8 # (25 / 10) = 8 # 2.5 = 20 / 10.5 = 1.905

is this right

Answer 29

hello?

Answer 30

is anyone here

Answer 31

I'm here now
Sorry it took so long :/