Answer:
1) the constant variation is B) -2
3) the equation of the line is C) y=2/3x+9
4) the equation of the line is D) y=2x-5
Answer:
c) $18 for a pack of 15 pens
Step-by-step explanation:
calculate the cost for 1 pen then compare
a) 7 ÷ 5 = 1.4
b) 15 ÷ 10 = 1.5
c) 18 ÷ 15 = 1.2 (has the lowest cost for a pen)
d) 48 ÷ 30 = 1.6
Answer:
45/30 = 1.5 minutes per mile
75 * 1.5 = 112.5 minutes (1 hour 52.5 minutes)
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
30-60-90 triangles have a set of x values that you can plug your numbers into.
we know that the side length opposite to 30 is x
the side length opposite to 60 is xsqrt3
the side length opposite to 90 is 2x
from this we can gather that y=2x where x=9 therefore y=18
