12. The sum of two consecutive integers is 59. Write an
1 answer:
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Answer:
y = 20
Step-by-step explanation:
Use the points to find the values of a and b
Using (0, 20 ) , then
20 = a [
= 1 ] , then
20 = a
y = 20
Using (3, 1280 ) , then
1280 = 20 b³ ( divide both sides by 20 )
64 = b³ ( take the cube root of both sides )
= b , that is
4 = b
Then exponential function is
y = 20.
Answer:
6.75 hour is approximated to 7 hours
Step-by-step explanation:
Given
Time = 6.75 hours
Required
Round to the nearest hour
The time given is given in base 10 and the conversion can be done in two ways.
1. Convert directly by approximation.
Approximating 6.75 to the nearest whole number gives 7.
Hence, 6.75 hours = 7 hours
2. Convert to time equivalent then approximate time
This is done as follows
Convert decimal to fraction
Simplify to lowest term
Convert hour to minute
There are 60 minutes in an hour
The rule of time approximation is that; if the minutes is between 0 and 29, it'll be rounded to 0; else, it'll be rounded up to 1
Going by the rule, 45 minutes will be approximated to 1 hour.
This gives
Hence, 6.75 hour is approximated to 7 hours