Answer:
length: 12m
width: 2m
Step-by-step explanation:
24 = a*w
a = w+10
then:
24 = (w+10)w
24 = w*w + 10*w
24 = w² + 10w
0 = w² + 10 - 24
w = {-10±√((10²)-(4*1*-24))} / (2*1)
w = {-10±√(100+96)} / 2
w = {-10±√196} / 2
w = {-10±14} / 2
only positive numbers:
w = {-10+14}/2
w = 4/2
w = 2m
a = w+10
a = 2 + 10
a = 12m
Check:
24 = 12*2
Answer:
B
Step-by-step explanation:
Class A mean: 4.8
Class B mean: 4
B) yes, .8 less
Answer:
Step-by-step explanation:
cos(50°) = 13/x
x = 13/cos(50°) ≅ 20.2
Answer:
16
Step-by-step explanation:
range= highest value - lowest value
