C
The construction described creates the incenter of the circle and this point is equidistant from all vertices of a triangle.
X = pencils, y = pens
8x + 6y = 8.50
4x + 4y = 5.....multiply by -2
----------------
8x + 6y = 8.50
-8x - 8y = -10 (result of multiplying by -2)
-----------------add
-2y = - 1.50
y = -1.50 / -2
y = 0.75 <=== pens cost 0.75
4x + 4y = 5
4x + 4(0.75) = 5
4x + 3 = 5
4x = 5 - 3
4x = 2
x = 2/4
x = 0.50 <== pencils cost 0.50
Answer:
Ok Ill do it in comments
Step-by-step explanation:
There are 4 quarts in a gallon, so do the following:
35 * 2 + 70, 70 / 2 = 35
The answer is B.
Answer: 94x-1
Step-by-step explanation: