29.99-20%= 23.99
25.00-10%= 22.50 so, Mr.chang got the better deal ( but not by much.)
Answer:
GCF: 2
Step-by-step explanation:
GCF: 2
(2*16) + (2*27)
Answer:
78 is 7 divided by 8, which equals 0.875. So an equivalent fraction is another fraction that also equals 0.875.
we have
we know that
so
the answer is in thousandths, because the denominator of the multiplication of the two fractions is one thousand
n=2
8+8(8-n)=40+8n (distribute 8 through the parenthesis)
8+64-8n=40-8n (add the numbers)
<em>72-</em>8n=40+8n (move the variable to the left side and change its sign)
<em>72</em><em>-</em>8n+8n=40
-8n+8n=40<em>-72</em> (connect like terms)
-16n = -32 (divide both sides by -16)
<u><em>n=2</em></u>