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
frozen [14]
3 years ago
10

Two companies Company A and Company B offer the same starting salary of $20,000 per year. Company A gives a raise of $1000 each

year.Company B gives a raise of 4% each year.
a) Write rules a and b in the nth year at companies A and B respectively.

b) For each company find the sum of wages earned during the first 20 years of employment

c) using the graphing calculator to find after how many years the total amount earned a company B is greater that the total amount of earned at company A?
Mathematics
1 answer:
Bingel [31]3 years ago
5 0
A.) A = 20000 + 1000n
B = 20000(1.04)^n

b.) For A, sn = n/2(2a + (n - 1)d)
s20 = 20/2(2(20000) + 1000(20 - 1)) = 10(40000 + 19(1000)) = 10(40000 + 19000) = 10(59000) = $590,000
For B, sn = a(r^n - 1)/(r - 1)
s20 = 20000((1.04)^20 - 1)/(1.04 - 1) = 20000(2.191 - 1)/0.04 = 20000(1.191)/0.04 = 23822.46 / 0.04 = $595,561.57

c.) Using a graphing calculator, it takes 18 years for the
<span>total amount earned a company B is greater that the total amount of earned at company A.</span>
You might be interested in
The Hundred Years War led to the end of the Middle Ages in the beginning of the
Gre4nikov [31]
It led to the beginning of the Renaissance.
4 0
3 years ago
Please help me guys I need ur help
Alexeev081 [22]

Answer:

3.5 yr

Step-by-step explanation:

np ;)

8 0
3 years ago
Read 2 more answers
It is 4 1/2 miles to the end of the trail. If Sophia bikes to the end and back in 60 minutes, what is her average speed in miles
PtichkaEL [24]
60 minutes for 2 times of 4.5 miles

60 minutes for 9 miles.

9 miles/60 minutes = 9 miles/1 hour

9 mph
4 0
3 years ago
Select all the correct answers. Select all the Expressions that are equivalent to the polynomial below. (3x-7)(2x+8)
Leno4ka [110]

Answer:

6x ² - 10x - 56

Step-by-step explanation:

(3x -7) (2x +8)

To expand this, each term in the first bracket would multiply the other bracket.

3x(2x +8) -7( 2x + 8)

6x ² + 24x - 14x - 56

6x ² + 10x - 56

I hope this was helpful, Please mark as brainliest²

4 0
3 years ago
Read 2 more answers
Solve the simultaneous equation 3x²-xy=0, 2y-5x=1​
ratelena [41]

Answer:

  (x, y) = (0, 1/2) or (1, 3)

Step-by-step explanation:

The first equation factors as ...

  x(3x -y) = 0

This has solutions x=0 and y=3x.

__

<u>x = 0</u>

Using this in the second equation gives ...

  2y -0 = 1

  y = 1/2

  (x, y) = (0, 1/2) is a solution

__

<u>y = 3x</u>

Using the expression for y in the second equation, we get ...

  2(3x) -5x = 1

  x = 1 . . . . . . . . . simplify

  y = 3x = 3 . . . . using x=1 in the first equation

  (x, y) = (1, 3) is a solution

_____

Interestingly, the (red line) graph of 3x^2 -xy = 0 produced by this graphing calculator has a "hole" at x=0, It says that point is (0, undefined). In a sense, y is undefined, in that it can be <em>anything</em>. A more appropriate graph would graph that equation as the two lines x=0 and y=3x.

4 0
3 years ago
Other questions:
  • Write a 3 digit number using digits 2,9,4. Draw a quick picture to show the value of your number
    8·2 answers
  • Explain what a scatterplot is please and show and example
    8·1 answer
  • What is the answer????
    15·1 answer
  • How do you graph 3 1/2,0 on a coordinate plane
    14·1 answer
  • What is the answer ?
    6·2 answers
  • HELP HELP GOD PLZ HELP WHAT IS 23 X 3/4
    11·2 answers
  • Im bored so pick a # 1 or 2? if u get it right then u get a brainlist!!
    6·1 answer
  • A car travels east at 35 mi/h through a wind that is moving north at a rate of 10 mi/h. To the
    5·1 answer
  • Please help due in a few minutes!!
    6·1 answer
  • What is the answer to (6+4)tothe3power-1tothe8power
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!