1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Artist 52 [7]
3 years ago
8

Mathematics with applications in the management, Natural, and Social Sciences Twelfth edition

Mathematics
1 answer:
Monica [59]3 years ago
4 0

Answer:

In 2015 the both populations were the same and from that year the population of millennials surpassed the population of boomers

Step-by-step explanation:

\left \{ {{10x+13y = 1125} \atop {-2x+7y = 495}} \right.

x=14

Boomer: 10(14)+13y=1125

               140+13y=1125

                       13y=1125-140

                       y= 985/13

                       y= 75.77 (75.77 millions of boomers in 2014)

Millenials: -2(14) +7y = 495

                  -28 +7y = 495

7y= 495+28

y= 523/7

y=74.71  (74.71 millios on millenials in 2014)

In 2014 the population of boombers were still greater than the population of millennials

The solution of the system of equations will give us the point where the populations were equalized, and from that point the population of boombers will be less than that of the millennials.

Boomers: 10x+13y = 1125

                 y= (-10x +1125)/13

Millenials: -2x+7y = 495

                 y= (2x+495)/7

We match both expressions of "y"

(-10x +1125)/13 =(2x+495)/7

cross multiply:

(-10x +1125)*7 =(2x+495)*13

-70x + 7875 = 26x + 6435

we group similar terms:

7875 -6435 = 26x+70x

1440 = 96x

x= 1440/96

x= 15

In 2015 the both populations were the same and from that year the population of millennials surpassed the population of boomers

You might be interested in
Use the formula Distance = rate . time. If Russell drives 203 miles at a constant speed of 58 mph, how
koban [17]

Answer:

the answer is 3 1/2 hours

Step-by-step explanation:

203/58=3.5

4 0
2 years ago
Rent a truck charges a daily rental of 39$ plus 0.16$ per mile. a competing agency, ace truck rentals, charges 25$ a day plus 0.
charle [14.2K]
39 + 0.16m = 25 + 0.24m
39 - 25 = 0.24m - 0.16m
14 = 0.08m
14 / 0.08 = m
175 = m <=== they will cost the same at 175 miles

39 + 0.16(175) = 39 + 28 = $ 67
25 + 0.24(175) = 25 + 42 = $ 67
they will both cost $ 67 <=====
3 0
3 years ago
Jay has $8. he wants to buy a book for $7.50. the sales tax is 6%. does he have enough money? explain your reasoning.
antoniya [11.8K]
Yes he does.

If the sales tax is 6%, that means that he has to pay an extra 6 cents for every dollar.

6x7.5=45

$7.50+$0.45=$7.95
8 0
3 years ago
HELP<br> PLEASE HELP ME FIND THE AREA!!
nikklg [1K]

Answer:63.75 ez

Step-by-step explanation:

first you multiply 10 x 8.5 and then divide by 2=85, after that you you divide by 2 =42.5 and you see the little triangle thats 42.5/2 wich is equal to 21.25 so after all of that you add 42.5+21.25 and you get the answer

6 0
2 years ago
Read 2 more answers
Three vertices of a rectangle have coordinates (3,4), (5,−4), and (−7,−7). Determine the fourth vertex of the rectangle and then
Ket [755]
The fourth vertex would be at point (-9,1).
The slope from (5,-4) to (3,4) is -8/2 or -4.
So I did that with (-7,-7) to the fourth vertex to get the answer.
7 0
3 years ago
Other questions:
  • HELP ASAP! GIVING BRAINLIEST!
    11·1 answer
  • 21.<br><br>A. ?<br><br>B. ?<br><br>C. ?<br><br>Need Help Please!
    15·1 answer
  • Andre and Morgan are both headed to Florida for vacation. Andre will drive 70 miles per hour. Morgan will drive 55 miles per hou
    11·1 answer
  • Please need help on this
    6·1 answer
  • Evaluate.
    12·1 answer
  • What inequality represents the verbal expression? all real numbers less than 69
    13·1 answer
  • A line has a y-intercept of 7 and a slope of 2 . what is it’s equation in slope-intercept form
    8·2 answers
  • 8. How many days would it take to travel from Washington, D.C.,
    10·1 answer
  • Is answer c the correct answer?​
    13·2 answers
  • Pls help me. tyyyyyyyyyyyyyy<br>HAHA sorry for the volume thing in the way
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!