Find The Arithmetic Mean Of The Following: 8 & 26
Find the arithmetic mean of the following: 8 & 26
Answer:
a2=17
Step-by-step explanation:
8,_,26
a1=8
an=26
n=3
an=a1+(n-1)d
26=8+(3-1)d
26=2d+8
2d=18
d=9
Shortcut:
a2=8+9
a2=17
#JuneChallenge
Waht Is The Indicated Product Of (2h+7) (2h-7)
Waht is the indicated product of (2h+7) (2h-7) By FOIL method: (2h + 7)(2h - 7) (2h)(2h) 4h^2 (2h)(-7) -14h (7)(2h) 14h (7)(-7) -49 4h^2 - 14h + 14h - 49 4h^2 - 49 or by using the algebra multiplication property etc. such that (a + b)(a - b) = a^2 - b^2 so (2h + 7)(2h - 7) a = 2h b = 7 4h^2 - 49
Comments
Post a Comment