For every x you see in the f function you will replace with the h function
Please help!!! Thank you
1 answer:
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Answer:
162 and
Step-by-step explanation:
To find the original number multiply by the reciprocal of the multiplier, that is
90 × =
= 162
------------------------------------------------------------------------
Similarly
Change the mixed number into an improper fraction
5 =
, then
×
( cancel 35 and 7 by 7 / cancel 6 and 3 by 3 )
= ×
=
Answer: c. 7,999,999 phone numbers
A can be any digit 2-9, then there are 8 possible numbers.
B can be any digit 0-9, then there are 10 possible numbers.
C can be any digit 0-9, then there are 10 possible numbers.
X can be any digit 0-9, then there are 10 possible numbers.
X can be any digit 0-9, then there are 10 possible numbers.
X can be any digit 0-9, then there are 10 possible numbers.
X can be any digit 0-9, then there are 10 possible numbers.
Then are possible: 8·10·10·10·10·10·10 = 8·10⁶ = 8,000,000 phone numbers
But the number 867-5309 is not used then 8,000,000 - 1 = 7,999,999 possible phone numbers.
Answer: c. 7,999,999 phone numbers