To find cost per each you divide $18 by 8 and get $2.25 per book.
To find how much for $27 you divide by $2.25 and get 12 books
Not at all:
The square of an even number will generate an even number and
The square of an odd number will generate an odd number
Can you re- write the equation again plz
First question: B - 500/9
Second question: A - 6
Answer:
x = 6, y =3
Step-by-step explanation:
4x-7y=3
x-7y=-15
Multiply the first equation by -1
-4x+7y=-3
Then add this to the second equation to eliminate y
-4x+7y=-3
x-7y=-15
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-3x +0y = -18
-3x = -18
Divide by -3
-3x/-3 = -18/-3
x = 6
Now find y
x -7y = -15
6 -7y = -15
Subtract 6 from each side
6-7y-6 = -15-6
-7y = -21
Divide by -7
-7y/-7 = -21/-7
y =3
