The constant is 15, divide 45 by 3 then you’ll get 15. multiply 15 with the minutes and you’ll get the sit-ups
Add the common difference to a term to get the next term.
-10
-10 + (-2) = -12
-12 + (-2) = -14
etc.
The sequence is
-10, -12, -14, -16, -18, -20, -22, -24, -26, -28
Answer:
a) 490
b) 240
Step-by-step explanation:
b) It is convenient to answer part B first.
The number owning only a fax will be the number owning a fax less the number that own both a fax and a copier:
420 -180 = 240 . . . . number owning only a fax
__
a) The number owning one or the other will be the number owing a copier (which includes those owning both) plus the number owning only a fax:
250 +240 = 490 . . . . number owning either
_____
If you want to work part A first, then you need to use the relation ...
n(A∪B) = n(A) +n(B) -n(A∩B)
51° 29' + 32° 46' = (51+32)° (29+46)'
= 83° 75' . . . . . there are 60' in 1°, so 75' = 1° + 15'
= 84° 15'
Answer:
15
Step-by-step explanation:
4+3.85x=61.75
3.85x=57.75
x=15
