Answer:
−
6 =
0
Step-by-step explanation:
180-30=150, it's simple math...
Answer:
f(x)=10x+30
Step-by-step explanation x=0=30 x= 1=40 x= 2=50 x= 3=60 x=4=70 x= 5=80 x=6=90 x= 7=100
Answer:18.6
Step-by-step explanation: 40 divided by 100=0.4, 0.4 x 31= 12.4, 31-12.4=18.6
Answer:
74.
Step-by-step explanation:
Let the number be xy.
Then from the given data
x = y + 3..........(1)
The numerical value of xy is 10x + y so the second equation is
10x + y + 10y + x = 121
11x + 11y = 121 Simplifying:
x + y = 11
x = -y + 11 .........(2) Adding equations (1) and (2):
2x = 14
x = 7
and therefore y = 7 - 3 = 4.