Let
r----------------- > <span>number of rolls
x-----------------> </span><span>feet of wrapping paper needs
we know that
1 r--------------------- > </span><span>12 feet of wrapping paper
therefore
r=(1/12)*x------------- > equation </span>required
for x=<span>84 feet of wrapping paper
r=(1/12)*84=7 rolls</span>
The key to answering "word problems" of this sort is being able to translate the given information into mathematical operations involving the data provided. Key words here are "of" and "about".
"About one-sixth of the (25) invitations sent were for her family."
⟺About16×⏟OF25
⟺
About
1
6
×
⏟
OF
25
of the invitations were for her family.
⟺16×25=4.166⎯⎯⎯⎯⎯⎯≈⏟about4
⟺
1
6
×
25
=
4.1
66
¯
≈
⏟
about
4
invitations were for her family.
Note:
Please check the attached diagram, as a certain error is appearing while submitting the answer.
Thus, I am attaching the solution via a diagram.
Answer:
17.8
Step-by-step explanation:
First, round the two. umbers to the nearest the th, or the first number past the decimal. 19.28 rounds to 19.3 (round up because 8 is bigger than 5) and 1.546 rounds to 1.5 (round down because 4 is smaller than 5). Then subtract. 19.3 - 1.5 = 17.8
X=-6
you have to isolate the variable by dividing each side by the factors that don’t contain the variable
