Answer:
sampling error i think
Step-by-step explanation:
The answer is F because you use the square's measurements as the base of each triangle then multiply each triangle then divide by 2. The multiply by 4 because there are four triangles and multiply 12 by 12 to get 144 because it is the base and the height of the square.
Hello!
The formula for circumference is

and the formula for area of a circle is

. Armed with these formulas, we can begin to find the circumferences and areas of the circles.
20.
C =

C =

C =

C = 13(3.14)
C = 40.8
A =

A =

A =

A = 132.7
The circumference of the circle is 40.8 in and the area of the circle is 132.7 in².21.
[Since we are given the diameter for this problem, to find the circumference, we no longer need to multiply the radius by 2 as in

because the diameter is the radius × 2. For

we do need to divide the diameter by 2.]
C =

C = 49.3
A =

A =

A =

A = 193.5
The circumference of the circle is 49.3 in and the area of the circle is 193.5 in².
And that is all there is to it. I hope this helps you! (:
Answer:
1. x = 0, 4, -9
2. x = 3, 3, -5
3. 2x^3 - 9x^2 + 7x + 6
4. x = -6, -8, -15
5. 2x^3+10x^2+12x
Factor out the common factor:
2x (x^2+5x+6 )
Factor what's left in parentheses:
2x (x + 2) (x + 3)
6. x = 0, 4, -9
Step-by-step explanation:
21c cuz 5.25 divided by 25 = .21