X = pens and y = pencils
4x + 7y = 13.25
y = 0.75
4x + 7(0.75) = 13.25
4x + 5.25 = 13.25
4x = 13.25 - 5.25
4x = 8
x = 8/4
x = 2 <===so each pen cost 2 bucks
It is read as a minus b minus c whole square. The (a - b - c)2 formula is expressed as (a - b - c)2 = a2 + b2 + c2 - 2ab + 2bc - 2ca.
Answer:
about 154.3
Step-by-step explanation:
I bake 45 cupcakes everyday and every hour I sell 5 cupcakes.
Answer:
Scalene
Step-by-step explanation:
Equilateral has all sides equal. Isosceles has only 2 sides equal. Scalene has no sides equal.