9x^2-16y^2=
(3x+4y)(3x-4y)
Answer:
d = 28
r = 14
r² = 196
C = 87.92
Step-by-step explanation:
Given:
r = 14
To find diameter:
d = 2r
d = 2(14)
d = 28
To find r²:
14²
196
Circumference:
C = 2πr
C = 2(3.14)(14)
C = 87.92
Answer:
x = 7 x = -6
Step-by-step explanation:
x^2−x−42=0
Factor
What two numbers multiply to -42 and add to -1
-7*6 = -42
-7+6 = -1
(x-7) (x+6) =0
Using the zero product property
x-7 =0 x+6 =0
x = 7 x = -6
Answer:
202.9 cm^3
Step-by-step explanation:
Mass is 712.04 grams
Density is 3.51 grams/cm^3
Volume = (712.04 g)/(3.51 grams/cm^3) = 202.9 cm^3
Answer:
12 because 1+2 add 1 to 2 WOW
Step-by-step explanation:
