These are all the possible answers i know from experience.
2x + 2y = 7
x^2 - 4y^2 = 8
2x = -2y + 7
x = -y + 7/2
(-y + 7/2)^2 - 4y^2 = 8
y^2 - 7y + 49/4 - 4y^2 = 8
0 = 3y^2 + 7y + 8 - 49/4
0 = 12y^2 + 28y + 32 - 49
0 = 12y^2 + 28y - 17
y = (-b ± √(b^2 - 4ac))/(2a)
y = (-28 ± √(28^2 - 4(12)(-17)))/(2(12))
Dividing by 2 is like dividing by √(4):
y = (-14 ± √(7*28 + (12)(17)))/(2*6)
y = (-7 ± √(7*7 + (3)(17)))/6
y = (-7 ± 10)/6 = 1/2 or -17/6
x = -y + 7/2 = 3 or 19/3
<span>Solutions are (3,1/2) and (19/3,-17/6)</span>
#22
(-3f)^-3
So write it as a fraction
1/(-3f)^-3
Solve denominator
1/(-3)^3 f^3
1/(-27)f^3
Move neg in front of fraction and multiply 27by f^3
- 1/27f^3
Answer:
Guess and Conjecture
Step-by-step explanation:
Conjecture is simply an opinion gotten from an incomplete information .Fro example. 10 boys selected from Nigeria were served pizza. None of them ate pizza.
it is a conjecture to conclude that all the males in Nigeria do not eat pizza, because the information is incomplete
Guess is almost similar to conjecture. It is conclusion from incomplete information. It is based on one's personal opinion. Guess can be true or false. it is under probaility and hence cant be banked upon to explain a proof.
Answer:
Yes
Step-by-step explanation:
12 miles is 6 dollars plus 3 your sum is 9 dollars. 15 percent of 9 is 1.35. 9 plus 1.35 is 10.35 which is less than 12
Answer:
A
Step-by-step explanation:
