Question

Help

Answer 1

@texaschic101 @ikram002p @phi @undeadknight26 are any of you available to help me with this question?

Answer 2

how do you find the average of 4 numbers ?

Answer 3

Add

Answer 4

then divide

Answer 5

so the average of 1,1,1,1 is 1+1+1+1 ? (I am adding like you said)

Answer 6

divide by what ?

Answer 7

by how many numbers there are

Answer 8

so in this case 4

Answer 9

ok, that sounds good.

for this problem I would write down the 4 numbers they gave you
put a + sign in between each one
put parens around all of that
then show divide by 4

Answer 10

yes, you can write it that way. but as you know
3 - 2 (for example) can also mean 3+ -2
Sometimes the second way is easier to understand.

but either way works.

now put parens around your
2.34 - 2/7 - 0.45 + 3/8

Answer 11

(2.34-2/7) - (0.45 + 3/8)

Answer 12

only put parens around the whole 4 numbers

Answer 13

yes. the parens mean: add up (or subtract for some of them) these numbers first
then we write /4 to show we will divide that sum by 4
(2.34 - 2/7 - 0.45 + 3/8)/4

remember order of operations? first do the stuff inside the parens
then do the divide.

Answer 14

we can show that a few different ways
\[ \frac{1}{4} \cdot(2.34 - 2/7 - 0.45 + 3/8)\]
or
\[ \frac{(2.34 - 2/7 - 0.45 + 3/8)}{4} \]

Answer 15

ok, but they probably want how you did it. I would change the fractions to a decimal (and keep 4 decimals) so
(2.34-0.2857 -0.45 + 0.375)/4
=
1.9793/4
= 0.4948
rounded to 0.49

Answer 16

Thank you so much @phi (: very greatful for your help