Answer:
8km
Step-by-step explanation:
Given data
Scale is 1cm :2km
that is 1cm to represent 2km
hence
if 1cm represents 2km
the 4cm will be x
cross multiply
4*2= x
x= 8km
Hence he walked 8km
Answer:
5039
Step-by-step explanation:
Since a <em>bijective function</em> of a set onto itself is nothing but a <em>permutation of S</em> and the set
S={-44, -43, -42, -41, -40, -39, -38}
has 7 elements, there are 7! = 5040 possible bijective functions of S onto itself.
But there is only one such that φ(x) = x
Hence, there are 5040-1 = 5039 bijective functions of S onto itself such that φ(x)≠x.
2* .75 + y = 4
1.5 + y = 4
Subtract 1.5 From Each Side
Y = 2.5 Or 2 1/2
7.15h+t>250 h=25
25×7.15=178.75
250-178.75=71.25
She must earn $71.25 in tips to earn $250 a week so the answer would be "x>$71.25"