Answer:
2
7
–
3
8
=
– 5
56
Result in decimals: -0.089285714285714
Calculation steps:
2
7
–
3
8
=
2 × 8
7 × 8
–
3 × 7
8 × 7
=
16
56
–
21
56
=
16 – 21
56
=
– 5
56
A = 2.5x , where x = 7 since there is 7 days in a week. So it would be 2.5(7)
B = 2.5(30) where 30 represents how many days. So he eats 75 cookies in 30 days.
Correct me if I am wrong.
H (x) = 5x^2+40x+64
y = (5x^2+40x+60) + 4
y = 5(x^2+8x+12) + 4
y = 5(x+2)(x+6) + 4
y-4 = 5(x+2)(x+6)
This means that the solutions, or where the parabola crosses the x-axis, are at x+2=0 and x+6=0, or x=-2, -6
So the midpoint of -2 and -6 is -4, the axis of symmetry is x=-4
The nearest integer is 7 because the nearest perfect square root is 49. Answer is 7-8
