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Mandarinka [93]
3 years ago
5

The U.S. Weather Bureau has a station on Mauna Loa in Hawaii that has measured carbon dioxide levels since 1959. At that time, t

here were 316 parts per million of carbon dioxide in the atmosphere. In 2005, the figure was 379 parts per million. Find the increase in carbon dioxide levels and the percent of increase.
Mathematics
1 answer:
slavikrds [6]3 years ago
3 0
The percent increase is 19.9%
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Y = 2x + 3<br> y = 3x - 1
lilavasa [31]

Answer:

 x= 4 and y= 11

Step-by-step explanation:

The problem to solve is:

y = 2x + 3 (equation 1)

y = 3x - 1 (equation 2)

Since y = 3x - 1 Solve x from equalution 1

3x - 1 = 2x + 3

3x - 2x = 3 + 1

x = 4

Since x is 4, solve for y

y  = 3x - 1

y = 3(4) - 1

y = 12 -1

y = 11

x =4 and y =7

3 0
3 years ago
Which of the following employees has the greatest total employee compensation?
Elina [12.6K]
We have to choose the correct answer which of the employees has the greatest total employee compensation. We just have to subtract the job expenses from total job benefits for everyone of them. A: $49,200 - $300 = $38,900. B : $49,500 - $500 = $49,000. C : $49,800 - $700 = $41,100. D : $50,100 - $900 = $49,200. The largest sum is $49,200 ( employee D ) . Answer: The greatest total employee compensation has Employee D<span>.</span>
3 0
3 years ago
Read 2 more answers
two terms of an arithmetic sequence are a6= 40 and a20= -16. write and explicit rule for the nth term
Lana71 [14]

Answer:

Tn = 64-4n

Step-by-step explanation:

The nth term of an AP is expressed as:

Tn = a+(n-1)d

a is the common difference

n is the number of terms

d is the common difference

Given the 6th term a6 = 40

T6 = a+(6-1)d

T6 = a+5d

40 = a+5d ... (1)

Given the 20th term a20 = -16

T20 = a+(20-1)d

T20 = a+19d

-16 = a+19d... (2)

Solving both equation simultaneously

40 = a+5d

-16 = a+19d

Subtracting both equation

40-(-16) = 5d-19d

56 = -14d

d = 56/-14

d = -4

Substituting d = -4 into equation

a+5d = 40

a+5(-4) = 40

a-20 = 40

a = 20+40

a = 60

Given a = 60, d = -4, to get the nth term of the sequence:

Tn = a+(n-1)d

Tn = 60+(n-1)(-4)

Tn = 60+(-4n+4)

Tn = 60-4n+4

Tn = 64-4n

7 0
3 years ago
How would I put this equation into standard form for a parabola?
Bezzdna [24]

Answer:

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Step-by-step explanation:


5 0
2 years ago
Suppose a population contains 80,000 people. All else being equal, a study based on a population sample that includes which of t
Helga [31]
I'd say A. 8000, because you'd get the most answers and the biggest variety in answers for a more accurate sample.
6 0
3 years ago
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