Answer:
The number of chairs
Step-by-step explanation:
The equation is 2z + 3
2 ( = multiply by)
z ( # of chairs)
+3 ( the 3 extra chairs in the back)
What you can say is:
2 choices for the first one (metals)
5 choices for the second choice stemming off of all the possible first choices (gems)
2 choices stemming off of all those combinations (shape)
So basically it would be:
2 * 5 * 2
Which is equal to 20.
b. sin (25) = cos (65)
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Answer:
The length of the page inside the margins=8 3/4 inches
Step-by-step explanation:
The total length of the year book can be expressed as;
L=l1+l2+l3
where;
L=Total length of yearbook
l1=top margin length
l2=inside margin length
l3=bottom margin length
In our case;
L=10 inches
l1=1/2 inches
l2=unknown
l3=3/4 inches
replacing;
10=(1/2)+l2+(3/4)
(1/2)+(3/4)+l2=10
(5/4)+l2=10
l2=(10)-(5/4)
l2=8 3/4 inches
The length of the page inside the margins=8 3/4 inches
