Since the cost is $6.75 per pound, and we have 2.6 pounds, multiply 6.75•2.6 to find the cost.
It would cost $17.55.
Answer:
3
Step-by-step explanation:
Step-by-step explanation:
y = 3x² - 10x - 2
a = 3
b = -10
c = -2
D = b² - 4ac
D = (-10)² - 4.3.(-2)
D = 100 + 24
D = 124
10x = 15y + 5 (by the vertical angle theorem).
8x + 1 + 7y + 10x = 180 ( by triangle sum theorem)
18x + 7y = 179 .............(1)
from first equation :-
10x - 15y = 5.................(2)
Multiply (1) by 10 and (2) by -18:-
180x + 70y = 1790
-180x + 270y = -90
Adding :-
340y = 1700
y = 5
and from first equation
10x = 15(5) + 5 = 80
x = 8
Answer x=8, y = 5.
