Answer:
Step-by-step explanation:
To drive 35 miles at 30 mph takes (35/30) hour.
To drive 35 miles at 25 mph takes (35/25) hour.
The difference is (35/25) minus (35/30).
In order to add or subtract fractions, they need a common denominator.
The smallest one available for this situation is 150 .
(35/25) = 210/150
(35/30) = 175/150
Now we can subtract: (210/150) - (175/150) = 35/150 of an hour.
(35/150 hour) x (60 min/hr) = (35 x 60) / (150) min = 14 minutes.
==> It's beginning to look like the answer is NOT 40minutes.
Let's do it again, with a less-elegant but more-intuitive approach:
Time to drive 35 miles at 30 mph = 35/30 = 1-1/6 hours = 70 minutes.
Time to drive 35 miles at 25 mph = 35/25 = 1.4 hours = 84 minutes.
<span>Time saved by driving at 30 mph instead of 25 mph = (84 - 70) = 14 minutes. </span>
Answer:
answer is c Hope this helps
Step-by-step explanation:
Answer:
y = one-half x + three-fourths
Step-by-step explanation:
The 2-point form of the equation of a line can be used for starters.
y = (y2 -y1)/(x2 -x1)(x -x1) +y1
y = (11/12 -19/20)/(1/3 -2/5)(x -2/5) +19/20 . . . . fill in given values
y = ((55 -57)/60)/((5 -6)/15)(x -8/20) +19/20 . . simplify a little
y = (-1/30)/(-2/30)(x -8/20) +19/20 . . . . . . . . . . and a little more ...
y = 1/2x -4/20 +19/20
y = 1/2x +15/20
y = 1/2x +3/4 . . . . line in slope-intercept form
An exponential model is used to represent growth of a population
The population after 3 years is 2585
The function is given as:
<em>3 years after</em>, means that x = 3
So, we have:
Evaluate exponents
Approximate
Hence, the population after 3 years is 2585
Read more about population growth at:
brainly.com/question/3160736
