Graphing Question Solve the system by graphing both lines on one coordinate system.; 2x + y = 3x - 2y = 4

1 answer:

7 0

2x + y = 3x - 2y = 4
2x + y = 4 . . . (1)
3x - 2y = 4 . . . (2)
The graph will be two lines intersecting at (1 5/7, 4/7), with one of the line passing through (0, 4) and the other passing through (0, -2)

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A certain city's population is 120,000 and decreases 1.4% per year for 15 years.

mart [117]

Answer:

Decay Problem.

Decay rate, r = 0.014
Initial Amount =120,000

$P(t)=120000(0.986)^t$
P(10)=104,220

Step-by-step explanation:

The exponential function for growth/decay is given as:

$P(t)=P_0(1 \pm r)^t, where:\\P_0$ is the Initial Population\\r is the growth/decay rate\\t is time$

In this problem:

The city's initial population is 120,000 and it decreases by 1.4% per year.

Since the population decreases, it is a Decay Problem.

Decay rate, r=1.4% =0.014
Initial Amount =120,000

Therefore, the function is:

$P(t)=120000(1 - 0.014)^t\\P(t)=120000(0.986)^t$

When t=10 years

$P(10)=120000(0.986)^10\\=104219.8\\\approx 104220 $ (to the nearest whole number)$

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3 years ago

John Davis makes $9.75 an hour. He works four hours on Monday, six hours on Tuesday, five hours on Wednesday, five hours on Thur

Hatshy [7]

<span>You are given John Davis’ rate which is $9.75 an hour. It is said that he works for four hours on Monday, six hours on Tuesday, five hours on Wednesday, five hours on Thursday, and seven hours on Friday. You are asked to find the gross pay of John Davis. All you need to do is to multiply the rate to the hour of work.</span>
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Monday: $9.75(4h) = $39</span>
Tuesday: $9.75(6h) = $58.5
Wednesday: $9.75(5h) = $48.75
Thursday: $9.75(5h) = $48.75
Friday: $9.75(7h) = $68.25
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To get the gross pay, add everything and you will get $263.25. The answer is letter D.</span>

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3 years ago

SHOW UR STEPS XD 0.876 - 34.75 = ?

mario62 [17]

Answer:

<h3>The answer is (-34.125)</h3>