its -5 so it is A,( -19/2, -5)
Answer:
1. x=6
2. x=9
Step-by-step explanation:
1.

2.

<u>Written Explanation: </u>
1.
-2x(3x+9)=-54
-6x-`8=54 (Distributive property)
Add 18 to both sides
-6x=-36
Divide both sides by -6 (negative divided by a negative equals a positive)
x=6
2.
2(3x+4)-3x=35
6x+8-3x=35 (distributive property)
3x+8=35 (combine Iike terms and then subtract them 6x-3x=3x)
Subtract 8 from both sides
3x=27
Divide both sides by 3
x=9
Try this solution:
Step-by-step explanation:
1) for zeros of the function: x²-6x-7=0; ⇒ x₁=7; x₂= -1.
2) for the vertex of the function: x₀= -b/2a, where a;b;c - numbers from ax²+bx+c=0 (from x²-6x-7=0).
x₀=6/2=3;
y₀= (4ac-b²)/4a; ⇒ y₀= -16.
It means, the coordinates of the vertex are (3;-16).
Answer:
Step-by-step
If you don't want to have anything left over, then the highest common factor is
36: 2 * 2 * 3 * 3
45: 3 * 3 * 5
The highest common factor is 9.
So he can make nine packages with
4 pencils in each one and
5 erasers in each package.
Answer:
y=1
x=6
Step-by-step explanation:
just move -7y and x=-1+7y
-(-1+7y)+9y=3
1-7y+9y=3
2y=2
y=1
x-7=-1
x=6