Answer:
C 4
Step-by-step explanation:
2 1/8 = 1 gift
4 2/8 = 2 gifts
6 3/8 = 3 gifts
8 4/8 = 4 gifts
10 5/8 would equal 5 gifts but bobby does not have that extra 5/8 of wrapping paper to finish it so he can only fully wrap 4 gifts.
<span>3x + y= 17 (a)
4x + 2 y = 20 (b)
Multiply (a) by 2:
6x + 2y = 34 (a)
4x + 2y = 20 (b)
make: (a) - (b)
2x = 14 -----> x =7
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Replace the value of x = 7 in one of anterior equation:
</span>3x + y= 17
3 x 7 + y = 17
21 + y = 17
y = 17 - 21
y = -4
This is a perfect square trinomial. All of these special cases take this form which you can identify: a²+2ab+b².
x^2 - 8x +16 equals (x-4)²
answer: (x-4)²
43. You just need to count the shaded area.
