Rate x time = distance
b = rate boat travels in still water
c = rate of the current
(b-c)4 = 216
(b+c)4 = 304
4b - 4c = 216
4b + 4c = 304
___________
8b = 520
b = 65 Km/hr
4c = 304 - 4b = 304 - 260 = 44
c = 11 Km/hr
Answer: a=36; b=18
Step-by-step explanation:
1. You know that the sum of two numbers is 54, then, you have:
a+b=54
2. According to the problem, the larger number is 18 more than the sampler number, this can be expressed as following:
a=b+18
3. Then, you must substitute the second equation into the first equation and solve for b:
b+18+b=54
b=18
4. Then the value of a is:
a+18=55
a=36
Answer:
Step-by-step explanation:
Given that the number of asthma sufferers in the world was about 84 million in 1990 and 130 million in 2001.
Let N represent the number of asthma sufferers (in millions) worldwide t years after 1990.
a) If linear function let us assume 1990 as base year 0 then 2001 would be year 11
When written as ordered pairs year and asthma sufferers in millions we have
(0,84) and (11,130) lie on the line
Using two point formula equation of line is
Slope = 46/11
b) When exponential we have
Use N(11) =
c) In 2010, t = 20
Linear y(20) =
When exponential
N(20) =
Answer:
What?
Step-by-step explanation:
Are you trying to divide?
<h3>
Answer:</h3>
<h3>
Explanation:</h3>
First, find the total number of apples.
Now, multiply this by the probability of picking a rotten apple, which is . This is also the same as dividing by , or moving the decimal point two places to the left.
This means that based on the probability given, rotten apples will be picked.