Group and factor
undistribute then undistribute again
remember
ab+ac=a(b+c)
this is important
6d^4+4d^3-6d^2-4d
undistribute 2d
2d(3d^3+2d^2-3d-2)
group insides
2d[(3d^3+2d^2)+(-3d-2)]
undistribute
2d[(d^2)(3d+2)+(-1)(3d+2)]
undistribute the (3d+2) part
(2d)(d^2-1)(3d+2)
factor that difference of 2 perfect squares
(2d)(d-1)(d+1)(3d+2)
77.
group
(45z^3+20z^2)+(9z+4)
factor
(5z^2)(9z+4)+(1)(9z+4)
undistribuet (9z+4)
(5z^2+1)(9z+4)
Answer:
A sample is considered large when n≥30. is called the margin of error of the estimate.
Step-by-step explanation:
I hope that was the answer you are looking for. If it is possible could you please mark me brainliest?
Answer:
s²
Step-by-step explanation:
Since you can't substitute you say area of square = side x side = s * s = s²
[tex]x+(x+1)+(x+2)\leq 12\\
3x+3\leq 12\\
3x\leq 9\\
x\leq 3\\
\boxed{\text{3,4,5\ or\ lesser}}
The circumference of the circle is 20pi meters, and half of that is 10pi, so the penguin swam for 10pi meters
