2x + 2y = 10
x + y = 5
x = 5 - y
Substitute for x in the other equation:-
(5 - y - 3)^2 + (y + 2)^2 = 16
(2 - y)^2 + (y + 2)^2 = 16
4 - 4y + y^2 + y^2 + 4y + 4 = 16
2y^2 + 8 = 16
2y^2 - 8 = 0
y^2 = 4
y = +/- 2
consider 2x + 2y = 10
when y = -2, 2x = 10 +4 giving x = 7
when y = 2, 2x = 10 - 4 giving x = 3
so solution is x = 7, y = -2 and x = 3, y=2.
3 minutes will be 3*32 = 96 copies
15 secs is 1/4hrs, so 32/4 = 8 copies
That’ll be a total of 104 copies
Answer:
- 1 1/3
Step-by-step explanation:
To solve this, simply divide 4 by -3. 4/-3 = -1 1/3, so that's your answer.
26.90 is the answer. hope this helps!
4b+24=7b-8
32=3b
b=32/3
hope this helps!
