7 notebooks cost \$6.16

Which equation would help determine the cost of 4 notebook

Question

7 notebooks cost \$6.16

Which equation would help determine the cost of 4 notebook

moazzam07 · Answer

3.54

moazzam07 · Answer

sorry 3.52

moazzam07 · Answer

$3.52 is the value of 4 notebooks

kaitlyn_nicole · Answer

find the cost of one by dividing the 6.16 and 7 then take that amount and times it by 4.

moazzam07 · Answer

6.16 divided by 7 = 0.88 
.88 times 4 = 3.52

anonymous · Answer

i got to write a  proportion

moazzam07 · Answer

@Black_ninja123  0.94? is wrong

texaschic101 · Answer

or you could set it up as a proportion...
7/6.16 = 4/x --- 7 notebooks for 6.16 = 4 notebooks for $x

black_ninja123 · Answer

Yea 0.94 is wrong sorry

kaitlyn_nicole · Answer

x=(7/6.16)x4

texaschic101 · Answer

7/6.16 = 4/x --- cross multiply
7x = (6.16)(4)
can you finish and solve for x

anonymous · Answer

uhhhg i dont understand so many replies

anonymous · Answer

its just writing proportions

texaschic101 · Answer

proportions are nothing but equivalent fractions

texaschic101 · Answer

7/6.16 = 4/x --- 7 notebooks for 6.16 = 4 notebooks for x dollars
CROSS MULTIPLY
(7)(x) = (6.16)(4)
7x = 24.64
x = 24.64/7
x = 3.52

kaitlyn_nicole · Answer

x=(4/6.80) x 33

anonymous · Answer

huh?

anonymous · Answer

4 glue sticks cost \$6.80
Which equation would help determine the cost of 3 glue sticks?

kaitlyn_nicole · Answer

x=(4/6.80) x 3
meaning that bc the 4/6.80 is in parenthesis then you do that first to find the cost of one, then you take the quotient of that and times it by three to find the cost.

anonymous · Answer

i dont understand? wht?

moazzam07 · Answer

what grade are you in?

anonymous · Answer

hmmmmmmm lets see uhhh not ur business