n, n + 2 - two consecutive even integers
3n = 2(n + 2) + 16 |use distributive property
3n = (2)(n) + (2)(2) + 16
3n = 2n + 4 + 16
3n = 2n + 20 |subtract 2n from both sides
n = 20
n + 2 = 20 + 2 = 22
Answer: 20, 22.
To solve this problem, let us first assign some variables.
Let us say that:
d = represents the population density of the circular region
(in units of 513 people per square mile)
p = represents the population of the circular region (in
units of people)
r = is the radius of the circular region
Now we can see that if we divide p by d, we can get a value
which has a units of square mile. Thus the area of the region, hence:
Area = 79,000 people / (513 people per square mile)
Area = 154 square mile
The area of a circle has the formula:
Area = π r^2
Therefore calculating for r:
154 square mile = π r^2
r = 7 miles (ANSWER)
3.43 dollars divided by 7 minutes = 0.49 cents
Answer: 6 songs will be on the final CD.
Step-by-step explanation:
The number of songs that the band expected to put on their next CD is 12.
The band writes and records 25% more songs than they expect to put on the CD. This means that the additional number of songs that the band recorded is
25/100 × 12 = 0.25 × 12 = 3
Therefore, after writing and recording, the number of song was
12 + 3 = 15
During the editing process, 60% of the songs are removed. It means that the number of songs that were removed is
60/100 × 15 = 0.6 × 15 = 9
Therefore, the number of songs that will be on the final CD is
15 - 9 = 6
The first thing is that you cant negative a negative number. 7h=-2h+18.
then then you add 2h to both sides. you get 9h=18
then you divide both sides by 9. you get h=2.
I hope I helped.
