Which set of addends equals 1,389? A) + 645
+ 520
+ 218

B) + 645
+ 525
+ 219

C) + 645
+ 500
+ 144

D) none of the above

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

he has 140 chickens because he has 10 times more chickens than ducks and he has 14 ducks so 14*10=140

2y+y=5

add 2y and y