It would be an over-estimate if u rounded ur numbers up and an under-estimate if u rounded ur numbers down
Answer:
Common factor from the two pairs
n2+2n-n-2 or
n(n+2)-1(n+2)
Rewrote in factored form
n(n+2)-1(n+2)or
(n-1)(n+2)
Solution
(n-1)(n+2)
Answer:
6. r = 21 cm
7. A = 155.5 m²
Step-by-step explanation:
7: Formula for arc length is;
S = (θ/360) × 2πr
We are given;
S = 51 cm
θ = 139°
Thus;
51 = (139/360) × 2π × r
Making r the subject;
r = (51 × 360)/(2π × 139)
r ≈ 21 cm
8) Area of sector is gotten from the formula;
A = (θ/360) × πr²
A = (220/360) × (π × 9²)
A = 155.5 m²
Answer:
C sqrt (4) or 2
Step-by-step explanation:
(x + 4)^2 + (y − 3)^2 = 4
We know that the equation for a circle can be written in the form
(x -h)^2 + (y − k)^2 = r^2 where (h,k) is the center and r is the radius
Rewriting the above equation
(x - -4)^2 + (y − 3)^2 = 2^2
The center is (-4,3) and the radius is 2
